diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2022-03-08 16:30:28 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-03-15 10:32:37 +0100 |
| commit | 6649fa876da4c505548b8e8945a6fc48e62e427c (patch) | |
| tree | ddeda701550c4015d6c3189872366e634d0d9f4e /arch/x86/kvm/emulate.c | |
| parent | 214b9a83b617367d53680812ad09687542370b8e (diff) | |
| download | lwn-6649fa876da4c505548b8e8945a6fc48e62e427c.tar.gz lwn-6649fa876da4c505548b8e8945a6fc48e62e427c.zip | |
x86/ibt,kvm: Add ENDBR to fastops
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154318.168850084@infradead.org
Diffstat (limited to 'arch/x86/kvm/emulate.c')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 5719d8cfdbd9..08c4e9c1a382 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -189,7 +189,7 @@ #define X16(x...) X8(x), X8(x) #define NR_FASTOP (ilog2(sizeof(ulong)) + 1) -#define FASTOP_SIZE 8 +#define FASTOP_SIZE (8 * (1 + HAS_KERNEL_IBT)) struct opcode { u64 flags; @@ -311,7 +311,8 @@ static int fastop(struct x86_emulate_ctxt *ctxt, fastop_t fop); #define __FOP_FUNC(name) \ ".align " __stringify(FASTOP_SIZE) " \n\t" \ ".type " name ", @function \n\t" \ - name ":\n\t" + name ":\n\t" \ + ASM_ENDBR #define FOP_FUNC(name) \ __FOP_FUNC(#name) @@ -433,6 +434,7 @@ static int fastop(struct x86_emulate_ctxt *ctxt, fastop_t fop); ".align 4 \n\t" \ ".type " #op ", @function \n\t" \ #op ": \n\t" \ + ASM_ENDBR \ #op " %al \n\t" \ __FOP_RET(#op) |