KVM: x86: Set guest DR6 by kvm_queue_exception_p() in instruction emulation

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Record DR6 in emulate_db() and use kvm_queue_exception_p() to set DR6
instead of directly using kvm_set_dr6() in emulation, i.e. rely on the
standard exception path to set DR6 via kvm_deliver_exception_payload().
This keeps the handling of DR6 during #DB injection consistent with other
code paths.

No functional change intended.

Signed-off-by: Hou Wenlong <houwenlong.hwl@antgroup.com>
[sean: fix e vs. p goof, add kvm_inject_emulated_db() right away]
Reviewed-by: Yosry Ahmed <yosry@kernel.org>
Link: https://patch.msgid.link/20260515222638.1949982-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Hou Wenlong 2026-05-15 15:26:31 -07:00 • committed by Sean Christopherson

parent 17afe9b750

commit dfc1c4687e

3 changed files with 18 additions and 12 deletions

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14

arch/x86/kvm/emulate.c

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6

arch/x86/kvm/kvm_emulate.h

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10

arch/x86/kvm/x86.c

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