KVM: x86: Trace hypercall register *after* truncating values for 32-bit

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When tracing hypercalls, invoke the tracepoint *after* truncating the
register values for 32-bit guests so as not to record unused garbage (in
the extremely unlikely scenario that the guest left garbage in a register
after transitioning from 64-bit mode to 32-bit mode).

Fixes: 229456fc34 ("KVM: convert custom marker based tracing to event traces")
Reviewed-by: Yosry Ahmed <yosry@kernel.org>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Link: https://patch.msgid.link/20260529222223.870923-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2026-05-29 15:21:48 -07:00

parent f43caad54c

commit 16b5d193b2

1 changed files with 2 additions and 2 deletions

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arch/x86/kvm/x86.c

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