diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2022-03-08 18:30:23 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-03-15 12:32:35 +0300 |
| commit | 5b2fc51576eff811a614e33cbbd0c3cb05022892 (patch) | |
| tree | 7e29a5e6c80c12bdc17ff1b832840f16ffcbb658 /arch/x86/kernel/head_64.S | |
| parent | 8b87d8cec1b31ea710568ae49ba5f5146318da0d (diff) | |
| download | linux-5b2fc51576eff811a614e33cbbd0c3cb05022892.tar.xz | |
x86/ibt,xen: Sprinkle the ENDBR
Even though Xen currently doesn't advertise IBT, prepare for when it
will eventually do so and sprinkle the ENDBR dust accordingly.
Even though most of the entry points are IRET like, the CPL0
Hypervisor can set WAIT-FOR-ENDBR and demand ENDBR at these sites.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20220308154317.873919996@infradead.org
Diffstat (limited to 'arch/x86/kernel/head_64.S')
| -rw-r--r-- | arch/x86/kernel/head_64.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 023761cd6903..990960a8bdb4 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -383,6 +383,7 @@ SYM_CODE_START(early_idt_handler_array) .endr UNWIND_HINT_IRET_REGS offset=16 SYM_CODE_END(early_idt_handler_array) + ANNOTATE_NOENDBR // early_idt_handler_array[NUM_EXCEPTION_VECTORS] SYM_CODE_START_LOCAL(early_idt_handler_common) /* |