________________________________________
From: Wei Liu [wei.l...@citrix.com]
Sent: 24 January 2018 20:26
To: Xen-devel
Cc: Wei Liu; Jan Beulich; Andrew Cooper
Subject: [PATCH] x86: fix GET_STACK_END
AIUI the purpose of having the .if directive is to make GET_STACK_END
work with any general purpose registers. The code as-is would produce
the wrong result for r8. Fix it.
Signed-off-by: Wei Liu <wei.l...@citrix.com>
Oops. Acked-by: Andrew Cooper ≤andrew.coop...@citrix.com≥
---
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Andrew Cooper <andrew.coop...@citrix.com>
---
xen/include/asm-x86/asm_defns.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/xen/include/asm-x86/asm_defns.h b/xen/include/asm-x86/asm_defns.h
index d2d91ca1fa..6a2b833db6 100644
--- a/xen/include/asm-x86/asm_defns.h
+++ b/xen/include/asm-x86/asm_defns.h
@@ -120,7 +120,7 @@ void ret_from_intr(void);
#define STACK_CPUINFO_FIELD(field) (1 - CPUINFO_sizeof + CPUINFO_##field)
#define GET_STACK_END(reg) \
- .if .Lr##reg > 8; \
+ .if .Lr##reg >= 8; \
movq $STACK_SIZE-1, %r##reg; \
.else; \
movl $STACK_SIZE-1, %e##reg; \
--
2.11.0
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