diff options
| author | Sami Tolvanen <[email protected]> | 2019-10-07 12:21:29 -0700 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2019-10-08 13:26:42 +0200 |
| commit | fbcfb8f0270bf24fe348393540b17a7f2ba577d7 (patch) | |
| tree | a2dc4599387d42d9a580855ebcfcf93fe22c7fae | |
| parent | 454de1e7d970d6bc567686052329e4814842867c (diff) | |
x86/cpu/vmware: Use the full form of INL in VMWARE_PORT
LLVM's assembler doesn't accept the short form INL instruction:
inl (%%dx)
but instead insists on the output register to be explicitly specified:
<inline asm>:1:7: error: invalid operand for instruction
inl (%dx)
^
LLVM ERROR: Error parsing inline asm
Use the full form of the instruction to fix the build.
Signed-off-by: Sami Tolvanen <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Acked-by: Thomas Hellstrom <[email protected]>
Cc: [email protected]
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: "VMware, Inc." <[email protected]>
Cc: x86-ml <[email protected]>
Link: https://github.com/ClangBuiltLinux/linux/issues/734
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | arch/x86/kernel/cpu/vmware.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c index 9735139cfdf8..46d732696c1c 100644 --- a/arch/x86/kernel/cpu/vmware.c +++ b/arch/x86/kernel/cpu/vmware.c @@ -49,7 +49,7 @@ #define VMWARE_CMD_VCPU_RESERVED 31 #define VMWARE_PORT(cmd, eax, ebx, ecx, edx) \ - __asm__("inl (%%dx)" : \ + __asm__("inl (%%dx), %%eax" : \ "=a"(eax), "=c"(ecx), "=d"(edx), "=b"(ebx) : \ "a"(VMWARE_HYPERVISOR_MAGIC), \ "c"(VMWARE_CMD_##cmd), \ |