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Subject[PATCH 2/4] x86,xen,objtool: Add UNWIND hint
SYM_CODE_START*() doesn't get auto-validated and needs an UNWIND hint
to get checked, add one.

vmlinux.o: warning: objtool: pvh_start_xen()+0x0: unreachable

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Reported-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/x86/platform/pvh/head.S | 1 +
1 file changed, 1 insertion(+)

--- a/arch/x86/platform/pvh/head.S
+++ b/arch/x86/platform/pvh/head.S
@@ -50,6 +50,7 @@
#define PVH_DS_SEL (PVH_GDT_ENTRY_DS * 8)

SYM_CODE_START_LOCAL(pvh_start_xen)
+ UNWIND_HINT_EMPTY
cld

lgdt (_pa(gdt))

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