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170d1c23 |
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25-Apr-2022 |
Reinette Chatre <reinette.chatre@intel.com> |
selftests/x86/corrupt_xstate_header: Use provided __cpuid_count() macro kselftest.h makes the __cpuid_count() macro available to conveniently call the CPUID instruction. Remove the local CPUID wrapper and use __cpuid_count() from kselftest.h instead. __cpuid_count() from kselftest.h is used instead of the macro provided by the compiler since gcc v4.4 (via cpuid.h) because the selftest needs to be supported with gcc v3.2, the minimal required version for stable kernels. Cc: Andy Lutomirski <luto@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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b7c11876 |
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08-Jun-2021 |
Andy Lutomirski <luto@kernel.org> |
selftests/x86: Test signal frame XSTATE header corruption handling This is very heavily based on some code from Thomas Gleixner. On a system without XSAVES, it triggers the WARN_ON(): Bad FPU state detected at copy_kernel_to_fpregs+0x2f/0x40, reinitializing FPU registers. [ bp: Massage in nitpicks. ] Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Rik van Riel <riel@surriel.com> Link: https://lkml.kernel.org/r/20210608144346.234764986@linutronix.de
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