diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2021-11-14 08:59:02 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-21 13:49:08 +0100 |
| commit | 87304542f264d992f5922a704849130179224d5a (patch) | |
| tree | f7e6aa6f63e186a0527587613837868d93838b89 /include/uapi/linux/securebits.h | |
| parent | 02eafa8f1558417d3c3cb530073f42ecc4962806 (diff) | |
KVM: Fix steal time asm constraints
commit 964b7aa0b040bdc6ec1c543ee620cda3f8b4c68a upstream.
In 64-bit mode, x86 instruction encoding allows us to use the low 8 bits
of any GPR as an 8-bit operand. In 32-bit mode, however, we can only use
the [abcd] registers. For which, GCC has the "q" constraint instead of
the less restrictive "r".
Also fix st->preempted, which is an input/output operand rather than an
input.
Fixes: 7e2175ebd695 ("KVM: x86: Fix recording of guest steal time / preempted status")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <89bf72db1b859990355f9c40713a34e0d2d86c98.camel@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/securebits.h')
0 files changed, 0 insertions, 0 deletions