Messages in this thread Patch in this message | | | Date | Fri, 8 Apr 2022 21:05:42 +0000 | Subject | [RFC V1 PATCH 2/5] selftests: kvm: Fix inline assembly for hypercall | From | Vishal Annapurve <> |
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Fix inline assembly for hypercall to explicitly set eax with hypercall number to allow the implementation to work even in cases where compiler would inline the function.
Signed-off-by: Vishal Annapurve <vannapurve@google.com> --- tools/testing/selftests/kvm/lib/x86_64/processor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 9f000dfb5594..4d88e1a553bf 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -1461,7 +1461,7 @@ uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2, asm volatile("vmcall" : "=a"(r) - : "b"(a0), "c"(a1), "d"(a2), "S"(a3)); + : "a"(nr), "b"(a0), "c"(a1), "d"(a2), "S"(a3)); return r; } -- 2.35.1.1178.g4f1659d476-goog
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