mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 13:53:33 +00:00
x86/sev-es: Fix SEV-ES OUT/IN immediate opcode vc handling
The IN and OUT instructions with port address as an immediate operand
only use an 8-bit immediate (imm8). The current VC handler uses the
entire 32-bit immediate value but these instructions only set the first
bytes.
Cast the operand to an u8 for that.
[ bp: Massage commit message. ]
Fixes: 25189d08e5
("x86/sev-es: Add support for handling IOIO exceptions")
Signed-off-by: Peter Gonda <pgonda@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Link: https://lkml.kernel.org/r/20210105163311.221490-1-pgonda@google.com
This commit is contained in:
parent
d1c5246e08
commit
a8f7e08a81
1 changed files with 2 additions and 2 deletions
|
@ -305,14 +305,14 @@ static enum es_result vc_ioio_exitinfo(struct es_em_ctxt *ctxt, u64 *exitinfo)
|
|||
case 0xe4:
|
||||
case 0xe5:
|
||||
*exitinfo |= IOIO_TYPE_IN;
|
||||
*exitinfo |= (u64)insn->immediate.value << 16;
|
||||
*exitinfo |= (u8)insn->immediate.value << 16;
|
||||
break;
|
||||
|
||||
/* OUT immediate opcodes */
|
||||
case 0xe6:
|
||||
case 0xe7:
|
||||
*exitinfo |= IOIO_TYPE_OUT;
|
||||
*exitinfo |= (u64)insn->immediate.value << 16;
|
||||
*exitinfo |= (u8)insn->immediate.value << 16;
|
||||
break;
|
||||
|
||||
/* IN register opcodes */
|
||||
|
|
Loading…
Reference in a new issue