The following commit has been merged into the x86/core branch of tip: Commit-ID: 6649fa876da4c505548b8e8945a6fc48e62e427c Gitweb: https://git.kernel.org/tip/6649fa876da4c505548b8e8945a6fc48e62e427c Author: Peter Zijlstra <peterz@xxxxxxxxxxxxx> AuthorDate: Tue, 08 Mar 2022 16:30:28 +01:00 Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx> CommitterDate: Tue, 15 Mar 2022 10:32:37 +01:00 x86/ibt,kvm: Add ENDBR to fastops Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> Acked-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Link: https://lore.kernel.org/r/20220308154318.168850084@xxxxxxxxxxxxx --- arch/x86/kvm/emulate.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 5719d8c..08c4e9c 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)
![]() |