KVM: x86: Update __get_sregs() / __set_sregs() to support SEV-ES

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Since many of the registers used by the SEV-ES are encrypted and cannot
be read or written, adjust the __get_sregs() / __set_sregs() to take into
account whether the VMSA/guest state is encrypted.

For __get_sregs(), return the actual value that is in use by the guest
for all registers being tracked using the write trap support.

For __set_sregs(), skip setting of all guest registers values.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <23051868db76400a9b07a2020525483a1e62dbcf.1607620209.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Tom Lendacky 2020-12-10 11:09:59 -06:00 • committed by Paolo Bonzini

parent d1949b93c6

commit 5265713a07

1 changed files with 18 additions and 9 deletions

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arch/x86/kvm/x86.c

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