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| author |   Peter Zijlstra <peterz@infradead.org> | 2022-06-14 23:16:01 +0200 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-06-27 10:33:59 +0200 |
| commit | d147553b64bad34d2f92cb7d8ba454ae95c3baac (patch) | |
| tree | 35eeadc2a0d470829bf6a33cc5f27e62935270e5 /arch/x86/entry/entry_64.S | |
| parent | x86/xen: Rename SYS* entry points (diff) | |
| download | linux-dev-d147553b64bad34d2f92cb7d8ba454ae95c3baac.tar.xz linux-dev-d147553b64bad34d2f92cb7d8ba454ae95c3baac.zip | |
x86/xen: Add UNTRAIN_RET
Ensure the Xen entry also passes through UNTRAIN_RET.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/entry/entry_64.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index f4384a29086f..0c88802e1155 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -328,6 +328,12 @@ SYM_CODE_END(ret_from_fork) #endif .endm +SYM_CODE_START_LOCAL(xen_error_entry) + UNWIND_HINT_FUNC + UNTRAIN_RET + RET +SYM_CODE_END(xen_error_entry) + /** * idtentry_body - Macro to emit code calling the C function * @cfunc: C function to be called @@ -347,7 +353,7 @@ SYM_CODE_END(ret_from_fork) * switch the CR3. So it can skip invoking error_entry(). */ ALTERNATIVE "call error_entry; movq %rax, %rsp", \ - "", X86_FEATURE_XENPV + "call xen_error_entry", X86_FEATURE_XENPV ENCODE_FRAME_POINTER UNWIND_HINT_REGS |