lkml.org 
[lkml]   [2020]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v2 0/2] INVD intercept change to skip instruction
Date
From: Tom Lendacky <thomas.lendacky@amd.com>

This series updates the INVD intercept support for both SVM and VMX to
skip the instruction rather than emulating it, since emulation of this
instruction is just a NOP.

For SVM, it requires creating a dedicated INVD intercept routine that
invokes kvm_skip_emulated_instruction(). The current support uses the
common emulate_on_interception() routine, which does not work for SEV
guests, and so a Fixes: tag is added.

For VMX, which already has a dedicated INVD intercept routine, it changes
kvm_emulate_instruction() into a call to kvm_skip_emulated_instruction().

Tom Lendacky (2):
KVM: SVM: Add a dedicated INVD intercept routine
KVM: VMX: Do not perform emulation for INVD intercept

arch/x86/kvm/svm/svm.c | 8 +++++++-
arch/x86/kvm/vmx/vmx.c | 3 ++-
2 files changed, 9 insertions(+), 2 deletions(-)

--
2.28.0

\
 
 \ /
  Last update: 2020-09-24 20:43    [W:0.075 / U:10.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site