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| author |   Josh Poimboeuf <jpoimboe@redhat.com> | 2022-04-18 09:50:25 -0700 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2022-04-19 21:58:49 +0200 |
| commit | 1ab80a0da4c4a4dd496fc14faabbc8bde61a605c (patch) | |
| tree | 5fc8af5969da4e68c756d82398744d78795ddacc /arch/x86/xen | |
| parent | x86/uaccess: Add ENDBR to __put_user_nocheck*() (diff) | |
| download | linux-dev-1ab80a0da4c4a4dd496fc14faabbc8bde61a605c.tar.xz linux-dev-1ab80a0da4c4a4dd496fc14faabbc8bde61a605c.zip | |
x86/xen: Add ANNOTATE_NOENDBR to startup_xen()
The startup_xen() kernel entry point is referenced by the ".note.Xen"
section, and is the real entry point of the VM. Control transfer is
through IRET, which *could* set NEED_ENDBR, however Xen currently does
no such thing.
Add ANNOTATE_NOENDBR to silence future objtool warnings.
Fixes: ed53a0d97192 ("x86/alternative: Use .ibt_endbr_seal to seal indirect calls")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Link: https://lkml.kernel.org/r/a87bd48b06d11ec4b98122a429e71e489b4e48c3.1650300597.git.jpoimboe@redhat.com
Diffstat (limited to 'arch/x86/xen')
| -rw-r--r-- | arch/x86/xen/xen-head.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S index ac17196e2518..3a2cd93bf059 100644 --- a/arch/x86/xen/xen-head.S +++ b/arch/x86/xen/xen-head.S @@ -45,6 +45,7 @@ SYM_CODE_END(hypercall_page) __INIT SYM_CODE_START(startup_xen) UNWIND_HINT_EMPTY + ANNOTATE_NOENDBR cld /* Clear .bss */ |