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* [PATCH] x86-64: fix ordering of CFI directives and recent ASM_CLAC additions
@ 2012-11-02 11:18 Jan Beulich
  2012-11-16 19:44 ` [tip:x86/urgent] x86-64: Fix " tip-bot for Jan Beulich
  2012-11-21  7:37 ` tip-bot for Jan Beulich
  0 siblings, 2 replies; 3+ messages in thread
From: Jan Beulich @ 2012-11-02 11:18 UTC (permalink / raw)
  To: mingo, tglx, hpa; +Cc: linux-kernel

While these got added in the right place everywhere else, entry_64.S
is the odd one where they ended up before the initial CFI directive(s).
In order to cover the full code ranges, the CFI directive must be
first, though.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

---
 arch/x86/kernel/entry_64.S |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

--- 3.7-rc3/arch/x86/kernel/entry_64.S
+++ 3.7-rc3-x86_64-unwind-vs-clac/arch/x86/kernel/entry_64.S
@@ -995,8 +995,8 @@ END(interrupt)
 	 */
 	.p2align CONFIG_X86_L1_CACHE_SHIFT
 common_interrupt:
-	ASM_CLAC
 	XCPT_FRAME
+	ASM_CLAC
 	addq $-0x80,(%rsp)		/* Adjust vector to [-256,-1] range */
 	interrupt do_IRQ
 	/* 0(%rsp): old_rsp-ARGOFFSET */
@@ -1135,8 +1135,8 @@ END(common_interrupt)
  */
 .macro apicinterrupt num sym do_sym
 ENTRY(\sym)
-	ASM_CLAC
 	INTR_FRAME
+	ASM_CLAC
 	pushq_cfi $~(\num)
 .Lcommon_\sym:
 	interrupt \do_sym
@@ -1190,8 +1190,8 @@ apicinterrupt IRQ_WORK_VECTOR \
  */
 .macro zeroentry sym do_sym
 ENTRY(\sym)
-	ASM_CLAC
 	INTR_FRAME
+	ASM_CLAC
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
 	pushq_cfi $-1		/* ORIG_RAX: no syscall to restart */
 	subq $ORIG_RAX-R15, %rsp
@@ -1208,8 +1208,8 @@ END(\sym)
 
 .macro paranoidzeroentry sym do_sym
 ENTRY(\sym)
-	ASM_CLAC
 	INTR_FRAME
+	ASM_CLAC
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
 	pushq_cfi $-1		/* ORIG_RAX: no syscall to restart */
 	subq $ORIG_RAX-R15, %rsp
@@ -1227,8 +1227,8 @@ END(\sym)
 #define INIT_TSS_IST(x) PER_CPU_VAR(init_tss) + (TSS_ist + ((x) - 1) * 8)
 .macro paranoidzeroentry_ist sym do_sym ist
 ENTRY(\sym)
-	ASM_CLAC
 	INTR_FRAME
+	ASM_CLAC
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
 	pushq_cfi $-1		/* ORIG_RAX: no syscall to restart */
 	subq $ORIG_RAX-R15, %rsp
@@ -1247,8 +1247,8 @@ END(\sym)
 
 .macro errorentry sym do_sym
 ENTRY(\sym)
-	ASM_CLAC
 	XCPT_FRAME
+	ASM_CLAC
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
 	subq $ORIG_RAX-R15, %rsp
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
@@ -1266,8 +1266,8 @@ END(\sym)
 	/* error code is on the stack already */
 .macro paranoiderrorentry sym do_sym
 ENTRY(\sym)
-	ASM_CLAC
 	XCPT_FRAME
+	ASM_CLAC
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
 	subq $ORIG_RAX-R15, %rsp
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15




^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2012-11-21  7:38 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2012-11-02 11:18 [PATCH] x86-64: fix ordering of CFI directives and recent ASM_CLAC additions Jan Beulich
2012-11-16 19:44 ` [tip:x86/urgent] x86-64: Fix " tip-bot for Jan Beulich
2012-11-21  7:37 ` tip-bot for Jan Beulich

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