Update /proc/cpuinfo.

- Move "ssbd" to an unused Linux mapping.
- Update unused Linux mappings.

Add Intel lam and AMD vnmi.

Add x2avic. Modify comment.

branches: 1.45.4;
Add tdx_guest, brs, hfi, ibt, amx_bf16, amx_tile and amx_int8.

Fix procfs_machdep.c rev. 1.143. Print CPUID 0x00000007:1 %eax correctly.

Update for cpuid flags:

- The table 11 was changed from CPUID 0x0f leaf 0 %edx to a Linux mapping.
- The table 12 was changed from CPUID 0x0f leaf 1 %edx to CPUID 0x07 leaf 1
%edx. Print avx_vnni and avx512_bf16.
- Print cppc, enqcmd and arch_lbr.
- Modify linux mapping. No used on NetBSD.

KNF. No functional change.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

branches: 1.40.4;
Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Add Intel lam and AMD vnmi.

Add x2avic. Modify comment.

branches: 1.45.4;
Add tdx_guest, brs, hfi, ibt, amx_bf16, amx_tile and amx_int8.

Fix procfs_machdep.c rev. 1.143. Print CPUID 0x00000007:1 %eax correctly.

Update for cpuid flags:

- The table 11 was changed from CPUID 0x0f leaf 0 %edx to a Linux mapping.
- The table 12 was changed from CPUID 0x0f leaf 1 %edx to CPUID 0x07 leaf 1
%edx. Print avx_vnni and avx512_bf16.
- Print cppc, enqcmd and arch_lbr.
- Modify linux mapping. No used on NetBSD.

KNF. No functional change.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

branches: 1.40.4;
Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Add x2avic. Modify comment.

Add tdx_guest, brs, hfi, ibt, amx_bf16, amx_tile and amx_int8.

Fix procfs_machdep.c rev. 1.143. Print CPUID 0x00000007:1 %eax correctly.

Update for cpuid flags:

- The table 11 was changed from CPUID 0x0f leaf 0 %edx to a Linux mapping.
- The table 12 was changed from CPUID 0x0f leaf 1 %edx to CPUID 0x07 leaf 1
%edx. Print avx_vnni and avx512_bf16.
- Print cppc, enqcmd and arch_lbr.
- Modify linux mapping. No used on NetBSD.

KNF. No functional change.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

branches: 1.40.4;
Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Add tdx_guest, brs, hfi, ibt, amx_bf16, amx_tile and amx_int8.

Fix procfs_machdep.c rev. 1.143. Print CPUID 0x00000007:1 %eax correctly.

Update for cpuid flags:

- The table 11 was changed from CPUID 0x0f leaf 0 %edx to a Linux mapping.
- The table 12 was changed from CPUID 0x0f leaf 1 %edx to CPUID 0x07 leaf 1
%edx. Print avx_vnni and avx512_bf16.
- Print cppc, enqcmd and arch_lbr.
- Modify linux mapping. No used on NetBSD.

KNF. No functional change.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

branches: 1.40.4;
Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Fix procfs_machdep.c rev. 1.143. Print CPUID 0x00000007:1 %eax correctly.

Update for cpuid flags:

- The table 11 was changed from CPUID 0x0f leaf 0 %edx to a Linux mapping.
- The table 12 was changed from CPUID 0x0f leaf 1 %edx to CPUID 0x07 leaf 1
%edx. Print avx_vnni and avx512_bf16.
- Print cppc, enqcmd and arch_lbr.
- Modify linux mapping. No used on NetBSD.

KNF. No functional change.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

branches: 1.40.4;
Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Update for cpuid flags:

- The table 11 was changed from CPUID 0x0f leaf 0 %edx to a Linux mapping.
- The table 12 was changed from CPUID 0x0f leaf 1 %edx to CPUID 0x07 leaf 1
%edx. Print avx_vnni and avx512_bf16.
- Print cppc, enqcmd and arch_lbr.
- Modify linux mapping. No used on NetBSD.

KNF. No functional change.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

branches: 1.40.4;
Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

KNF. No functional change.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

branches: 1.40.4;
Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Add v_spec_ctrl, avx512_fp16, sme, sev and sev_es. Tested by nonaka@.

Add sgx, sgx_lc, serialize and tsxldtrk.

branches: 1.39.2;
Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Add sgx, sgx_lc, serialize and tsxldtrk.

Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill

- Use per cpu ci->ci_max_cupid instead of global "cpuid_level" variable.
- Print AMD specific cpuid leafs:
0x80000008 ebx
0x8000000a edx
0x80000007 ebx

Print the following cpuid bits:

0x0000000d:1 eax (xsaveopt, xsavec, xgetbv1, xsaves)
0x0000000f:0 edx (cqm_llc)
0x0000000f:1 edx (cqm_occup_llc)
0x00000006 eax (dtherm, ida, arat, pln, pts, hwp, hwp_notify,
hwp_act_window, hwp_epp, hwp_pkg_req)

Check buffer length correctly to not to print a garbage character.
Fixes PR#52352 reported by Yasushi Oshima.

branches: 1.15.2;
- Print 0x00000007:0 ecx leaf bits.
- Don't print fdiv_bug on amd64.
- Print APIC ID, Initial APIC ID and clflush size.

branches: 1.14.6;
- Remove "pcommit".
- Add "rdt_a".

- Update VIA/Cyrix/Centaur-defined bits. Part of PR#39950
- Fix comment. x86_features[4] is not 0x80000001 but 0x00000001
- Update comment

branches: 1.12.2;
Take some changes from the Linux's latest x86/include/asm/cpufeatures.h.
- Add ptsc, avx512dq, avx512bw and avx512vl
- Remove some Linux mappings.

Fix typo in comment.

Add comments. Fix comments. No functional change.

Use CPUID_TO_*() macros. This change fix a bug that /proc/cpuinfo's CPU model
was incorrect on many newer CPUs and CPU family was incorrect on some AMD
machines.

PR#49246 "x86/x86/procfs_machdep.c (/proc/cpuinfo) is very old" related change
- Decode NetBSD's ci_feat_val[0-5]. The output order of the bits is the same as
linux. Before this commit, only ci_feat_val[0] was decoded.
- Linux defined feature words and some others are not decoded yet.
- procfs_getonecpufeatures() will be rewritten when all of linux entries are
decoded.

Always output 2 digits for the cpu frequency decimal part.

branches: 1.6.4; 1.6.6;
make this compute the needed size instead of bailing.

correct/add protection against snprintf overflow.

use cpu_{g,s}etmodel

Change i386 to use x86/fpu.c instead of i386/isa/npx.c
This changes the trap10 and trap13 code to call directly into fpu.c,
removing all the code for T_ARITHTRAP, T_XMM and T_FPUNDA from i386/trap.c
Not all of the code thate appeared to handle fpu traps was ever called!
Most of the changes just replace the include of machine/npx.h with x86/fpu.h
(or remove it entirely).

Minor fpu initialisation cleanups:
Set default CR) so that the FPU is enabled (unset CR0_EM) and initialise
i386_fpu_present to 1.
No need to call the npx trap indirectly, rename to fpunda() to match amd64.
Remove the i386_fpu_exception variable and sysctl (It used to indicate
which irq was used for fpu exceptions, but we only support 'internal'
now). Hopefully no one cares.
fpuinit() now only needs to clear TS before the fninit(). Apart from the
checks for 486SX and the 'fdiv bug' this matches the amd64 version.
Exclude fpuinit() from XEN kernels, they don't call it - which rather begs
the question as to whether it is needed at all!

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.12; 1.1.16; 1.1.26; 1.1.30;
Unify i386 and amd64 procfs MD code into x86.

Merge the bouyer-xenpvh branch, bringing in Xen PV drivers support under HVM
guests in GENERIC.
Xen support can be disabled at runtime with
boot -c
disable hypervisor

Lowercase ppin.

Add AMD protected processor identification number (PPIN).

branches: 1.36.2;
Add AVX512_VP2INTERSECT, SERIALIZE and TSXLDTRK(TSX suspend load addr tracking)

Add Fast Short Rep Mov(fsrm).

branches: 1.34.2;
Add rdpru.

branches: 1.33.2;
Add avx512ifma, cqm_mbm_total, cqm_mbm_local and waitpkg

Avoid the 1<<31 construct

Shift unsigned int rather than signed one.

Detected with kUBSan when reading /proc/cpuinfo.

Revert rev. 1.29. Use current cpuid 7 edx value to print.

Add md_clear.

Use ci_feat_val[7] instead of directly getting cpuid 7 edx.

- Add wbnoinvd, virt_ssbd, tme, cldemote, movdiri, movdir64b and pconfig.
- Move AMD 0x80000008 ebx's ibpb, ibrs and stibp to x86_features[8] linux
mapping.

restore original now that weak symbols are gone

Comment out rcr0 use until the weak symbol mess is undone.

- I misread ci_acpiid as ci_apicid... LAPIC ID is in ci_cpuid.
Print it correctly.
- ci_initapicid(Initial APIC ID) is uint32_t, so use %u.

OK'd by maxv:
- Add cpuid 7 edx L1D_FLUSH bit.
- Add IA32_ARCH_SKIP_L1DFL_VMENTRY bit.
- Add IA32_FLUSH_CMD MSR.

branches: 1.23.2;
Add SSBD bit for Intel.

branches: 1.22.2;
- Add AMD CPUID leaf 0x80000008 ebx's xsaveerptr, ibpb, ibrs, stibp.
- Add Intel CPUID leaf 7 ebx's umip, avx512_vbmi2, gfni, vaes, vpclmulqdq,
avx512_vnni and avx512_bitalg.
- Add Intel CPUID leaf 7 edx's avx512_4vnniw, avx512_4fmaps and
arch_capabilities.

Print intel_pt in /proc/cpuinfo.

Fix the location of AMD's smca(Scalable MCA) bit. Thanks Yasushi Oshima for
finding this bug.

GC i386_fpu_present. no FPU x86 is not supported.

Also delete newly unused send_sigill