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| author | Ingo Molnar <[email protected]> | 2020-07-28 13:18:01 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2020-07-28 13:18:01 +0200 |
| commit | e89d4ca1df630378bde3e36c42001b755b0044fe (patch) | |
| tree | d953ccecb8365acab65d0075e674f7e9a9bd9880 /arch/x86/kernel/fpu/core.c | |
| parent | 2ac5413e5edca6910d2ae157187a889e94be2b62 (diff) | |
| parent | 92ed301919932f777713b9172e525674157e983d (diff) | |
Merge tag 'v5.8-rc7' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'arch/x86/kernel/fpu/core.c')
| -rw-r--r-- | arch/x86/kernel/fpu/core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 1bb7532f5f34..eb86a2b831b1 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -140,6 +140,12 @@ void kernel_fpu_begin(void) copy_fpregs_to_fpstate(¤t->thread.fpu); } __cpu_invalidate_fpregs_state(); + + if (boot_cpu_has(X86_FEATURE_XMM)) + ldmxcsr(MXCSR_DEFAULT); + + if (boot_cpu_has(X86_FEATURE_FPU)) + asm volatile ("fninit"); } EXPORT_SYMBOL_GPL(kernel_fpu_begin); |