Proper fix for GCC 2 compilation error that was fixed earlier, cause pointed out by Ingo.

Support for SMP on x86_64.

No major changes to the kernel: just compiled in arch_smp.cpp and fixed the
IDT load in arch_cpu_init_percpu to use the correct limit for x86_64 (uses
sizeof(interrupt_descriptor)). In the boot loader, changed smp_boot_other_cpus
to construct a temporary GDT and get the page directory address from CR3, as
what's in kernel_args will be 64-bit stuff and will not work to switch the
CPUs into 32-bit mode in the trampoline code. Refactored 64-bit kernel entry
code to not use the stack after disabling paging, as the secondary CPUs are
given a 32-bit virtual stack address by the SMP trampoline code which will
no longer work.

* Delay initializing SMP stuff like APICs and kstacks of non-boot CPUs until after the boot menu
* When disabling SMP initialization of those parts is avoided so it works more cleanly
* Moved smp_find_mp_config() into smp_init() and moved MPS specific parts into smp_do_mp_config()
* Removed the global floating struct, if found it is now passed into smp_do_mp_config() like it is done for ACPI
* Made the file a bit more C++, applied coding style to some variable names and unified/improved some of the debug output

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23216 a95241bf-73f2-0310-859d-f6bbb57e9c96

* renamed smp_boot.c to smp.cpp
* there is now a "Disable Hyper-Threading" safemode in the boot loader
* the SMP & HT menu items are now added in smp.cpp - and are only added
if the system supports one of them.
* more cleanup to smp_apic.h
* removed cpuid() from the boot loader's support.S - instead, it will now
use the one from the kernel.
* added a very weak HT detection: if the MP config only listed one CPU,
and this CPU supports HT, we enable the other logic processor manually -
as this currently doesn't work, it's disabled, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14536 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96

Proper fix for GCC 2 compilation error that was fixed earlier, cause pointed out by Ingo.

Support for SMP on x86_64.

No major changes to the kernel: just compiled in arch_smp.cpp and fixed the
IDT load in arch_cpu_init_percpu to use the correct limit for x86_64 (uses
sizeof(interrupt_descriptor)). In the boot loader, changed smp_boot_other_cpus
to construct a temporary GDT and get the page directory address from CR3, as
what's in kernel_args will be 64-bit stuff and will not work to switch the
CPUs into 32-bit mode in the trampoline code. Refactored 64-bit kernel entry
code to not use the stack after disabling paging, as the secondary CPUs are
given a 32-bit virtual stack address by the SMP trampoline code which will
no longer work.

* Delay initializing SMP stuff like APICs and kstacks of non-boot CPUs until after the boot menu
* When disabling SMP initialization of those parts is avoided so it works more cleanly
* Moved smp_find_mp_config() into smp_init() and moved MPS specific parts into smp_do_mp_config()
* Removed the global floating struct, if found it is now passed into smp_do_mp_config() like it is done for ACPI
* Made the file a bit more C++, applied coding style to some variable names and unified/improved some of the debug output

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23216 a95241bf-73f2-0310-859d-f6bbb57e9c96

* renamed smp_boot.c to smp.cpp
* there is now a "Disable Hyper-Threading" safemode in the boot loader
* the SMP & HT menu items are now added in smp.cpp - and are only added
if the system supports one of them.
* more cleanup to smp_apic.h
* removed cpuid() from the boot loader's support.S - instead, it will now
use the one from the kernel.
* added a very weak HT detection: if the MP config only listed one CPU,
and this CPU supports HT, we enable the other logic processor manually -
as this currently doesn't work, it's disabled, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14536 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96