Messages in this thread | | | From | Jim Mattson <> | Date | Wed, 21 Feb 2018 16:25:15 -0800 | Subject | Re: [PATCH 3/3] KVM: VMX: mark RDMSR path as unlikely |
| |
On Wed, Feb 21, 2018 at 1:41 PM, Paolo Bonzini <pbonzini@redhat.com> wrote: > vmx_vcpu_run and svm_vcpu_run are large functions, and this can actually > make a substantial cycle difference by keeping the fast path contiguous > in memory. Without it, the retpoline guest/retpoline host case is about > 50 cycles slower. > > Cc: x86@kernel.org > Cc: Radim Krčmář <rkrcmar@redhat.com> > Cc: KarimAllah Ahmed <karahmed@amazon.de> > Cc: David Woodhouse <dwmw@amazon.co.uk> > Cc: Jim Mattson <jmattson@google.com> > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Ingo Molnar <mingo@kernel.org> > Cc: stable@vger.kernel.org > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
| |