mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
946fbbc13d
vmx_vcpu_run() and svm_vcpu_run() are large functions, and giving branch hints to the compiler can actually make a substantial cycle difference by keeping the fast path contiguous in memory. With this optimization, the retpoline-guest/retpoline-host case is about 50 cycles faster. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Jim Mattson <jmattson@google.com> Cc: David Woodhouse <dwmw@amazon.co.uk> Cc: KarimAllah Ahmed <karahmed@amazon.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kvm@vger.kernel.org Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20180222154318.20361-3-pbonzini@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|---|---|---|
| .. | ||
| cpuid.c | ||
| cpuid.h | ||
| debugfs.c | ||
| emulate.c | ||
| hyperv.c | ||
| hyperv.h | ||
| i8254.c | ||
| i8254.h | ||
| i8259.c | ||
| ioapic.c | ||
| ioapic.h | ||
| irq.c | ||
| irq.h | ||
| irq_comm.c | ||
| Kconfig | ||
| kvm_cache_regs.h | ||
| lapic.c | ||
| lapic.h | ||
| Makefile | ||
| mmu.c | ||
| mmu.h | ||
| mmu_audit.c | ||
| mmutrace.h | ||
| mtrr.c | ||
| page_track.c | ||
| paging_tmpl.h | ||
| pmu.c | ||
| pmu.h | ||
| pmu_amd.c | ||
| pmu_intel.c | ||
| svm.c | ||
| trace.h | ||
| tss.h | ||
| vmx.c | ||
| vmx_shadow_fields.h | ||
| x86.c | ||
| x86.h | ||