lkml.org 
[lkml]   [2022]   [Nov]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 1/2] KVM: arm64: selftests: Disable single-step with correct KVM define
On Wed, Nov 16, 2022 at 4:24 PM Sean Christopherson <seanjc@google.com> wrote:
>
> Disable single-step by setting debug.control to KVM_GUESTDBG_ENABLE,
> not to SINGLE_STEP_DISABLE. The latter is an arbitrary test enum that
> just happens to have the same value as KVM_GUESTDBG_ENABLE, and so
> effectively disables single-step debug.
>
> No functional change intended.
>
> Cc: Reiji Watanabe <reijiw@google.com>
> Fixes: b18e4d4aebdd ("KVM: arm64: selftests: Add a test case for KVM_GUESTDBG_SINGLESTEP")
> Signed-off-by: Sean Christopherson <seanjc@google.com>
> ---
> tools/testing/selftests/kvm/aarch64/debug-exceptions.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
> index 947bd201435c..91f55b45dfc7 100644
> --- a/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
> +++ b/tools/testing/selftests/kvm/aarch64/debug-exceptions.c
> @@ -369,7 +369,7 @@ void test_single_step_from_userspace(int test_cnt)
> KVM_GUESTDBG_SINGLESTEP;
> ss_enable = true;
> } else {
> - debug.control = SINGLE_STEP_DISABLE;
> + debug.control = KVM_GUESTDBG_ENABLE;

Reviewed-by: Reiji Watanabe <reijiw@google.com>

Maybe I originally wanted to set it to 0:)
There is no issue with KVM_GUESTDBG_ENABLE at all,
as KVM_GUESTDBG_SINGLESTEP is cleared with that.

Thank you for fixing this!

Thanks,
Reiji


> ss_enable = false;
> }
>
> --
> 2.38.1.431.g37b22c650d-goog
>

\
 
 \ /
  Last update: 2022-11-17 04:08    [W:0.090 / U:0.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site