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authorPeter Zijlstra <peterz@infradead.org>2022-03-08 16:30:42 +0100
committerPeter Zijlstra <peterz@infradead.org>2022-03-15 10:32:41 +0100
commite8d61bdf0fdfaeaf35fb5a63d6e67e60038b88e0 (patch)
treeabb9c44d8701c1b9ba8707b0fce6804d527ae58c
parent3215de84c06d747bb748b98945add83e3ec8a6e2 (diff)
x86/ibt,sev: Annotations
No IBT on AMD so far.. probably correct, who knows. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lore.kernel.org/r/20220308154318.995109889@infradead.org
-rw-r--r--arch/x86/entry/entry_64.S1
-rw-r--r--arch/x86/entry/entry_64_compat.S1
-rw-r--r--arch/x86/kernel/head_64.S2
3 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index d76f14f581f7..6e5399104abd 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -95,6 +95,7 @@ SYM_CODE_START(entry_SYSCALL_64)
movq PER_CPU_VAR(cpu_current_top_of_stack), %rsp
SYM_INNER_LABEL(entry_SYSCALL_64_safe_stack, SYM_L_GLOBAL)
+ ANNOTATE_NOENDBR
/* Construct struct pt_regs on stack */
pushq $__USER_DS /* pt_regs->ss */
diff --git a/arch/x86/entry/entry_64_compat.S b/arch/x86/entry/entry_64_compat.S
index 74208a1236b3..4fdb007cddbd 100644
--- a/arch/x86/entry/entry_64_compat.S
+++ b/arch/x86/entry/entry_64_compat.S
@@ -214,6 +214,7 @@ SYM_CODE_START(entry_SYSCALL_compat)
movq PER_CPU_VAR(cpu_current_top_of_stack), %rsp
SYM_INNER_LABEL(entry_SYSCALL_compat_safe_stack, SYM_L_GLOBAL)
+ ANNOTATE_NOENDBR
/* Construct struct pt_regs on stack */
pushq $__USER32_DS /* pt_regs->ss */
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 462cc1e18919..b8e3019547a5 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -332,6 +332,7 @@ SYM_CODE_END(start_cpu0)
*/
SYM_CODE_START_NOALIGN(vc_boot_ghcb)
UNWIND_HINT_IRET_REGS offset=8
+ ENDBR
/* Build pt_regs */
PUSH_AND_CLEAR_REGS
@@ -439,6 +440,7 @@ SYM_CODE_END(early_idt_handler_common)
*/
SYM_CODE_START_NOALIGN(vc_no_ghcb)
UNWIND_HINT_IRET_REGS offset=8
+ ENDBR
/* Build pt_regs */
PUSH_AND_CLEAR_REGS