https://github.com/torvalds/linux
Revision e42c68281b444f9a20d72a062f8c6fd0d31e4de8 authored by Wanpeng Li on 12 September 2020, 06:16:39 UTC, committed by Paolo Bonzini on 12 September 2020, 06:19:23 UTC
svm->next_rip is reset in svm_vcpu_run() only after calling
svm_exit_handlers_fastpath(), which will cause SVM's
skip_emulated_instruction() to write a stale RIP.

We can move svm_exit_handlers_fastpath towards the end of
svm_vcpu_run().  To align VMX with SVM, keep svm_complete_interrupts()
close as well.

Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Paul K. <kronenpj@kronenpj.dyndns.org>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
[Also move vmcb_mark_all_clean before any possible write to the VMCB.
 - Paolo]
1 parent d831de1
History
Tip revision: e42c68281b444f9a20d72a062f8c6fd0d31e4de8 authored by Wanpeng Li on 12 September 2020, 06:16:39 UTC
KVM: SVM: avoid emulation with stale next_rip
Tip revision: e42c682
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