KVM: nSVM: Clear exit_code_hi in VMCB when synthesizing nested VM-Exits

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commit da01f64e74 upstream.

Explicitly clear exit_code_hi in the VMCB when synthesizing "normal"
nested VM-Exits, as the full exit code is a 64-bit value (spoiler alert),
and all exit codes for non-failing VMRUN use only bits 31:0.

Cc: Jim Mattson <jmattson@google.com>
Cc: Yosry Ahmed <yosry.ahmed@linux.dev>
Cc: stable@vger.kernel.org
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251113225621.1688428-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Sean Christopherson 2025-11-13 14:56:13 -08:00 • committed by Greg Kroah-Hartman

parent de39f5a4be

commit 35ddb0b624

2 changed files with 6 additions and 3 deletions

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arch/x86/kvm/svm/svm.c

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7

arch/x86/kvm/svm/svm.h

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