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Message-ID: <CALCETrXsSTPi2jmMgA_Muh6y6eU2yq-fs8_MGPhJVNnfYaop1A@mail.gmail.com> Date: Sun, 11 Jan 2015 16:38:36 -0800 From: Andy Lutomirski <luto@...capital.net> To: Denys Vlasenko <dvlasenk@...hat.com> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Oleg Nesterov <oleg@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>, Frederic Weisbecker <fweisbec@...il.com>, X86 ML <x86@...nel.org>, Alexei Starovoitov <ast@...mgrid.com>, Will Drewry <wad@...omium.org>, Kees Cook <keescook@...omium.org> Subject: Re: [PATCH] x86: introduce push/pop macros which generate CFI_REL_OFFSET and CFI_RESTORE On Sun, Jan 11, 2015 at 3:07 PM, Denys Vlasenko <dvlasenk@...hat.com> wrote: > Sequences > pushl_cfi %reg > CFI_REL_OFFSET reg, 0 > and > popl_cfi %reg > CFI_RESTORE reg > happen quite often. This patch adds macros which generate them. > > No assembly changes (verified with objdump -dr vmlinux.o). Looks sane to me. Where does this apply in relation to the rest of your series? > > Signed-off-by: Denys Vlasenko <dvlasenk@...hat.com> > CC: Linus Torvalds <torvalds@...ux-foundation.org> > CC: Oleg Nesterov <oleg@...hat.com> > CC: "H. Peter Anvin" <hpa@...or.com> > CC: Borislav Petkov <bp@...en8.de> > CC: Andy Lutomirski <luto@...capital.net> > CC: Frederic Weisbecker <fweisbec@...il.com> > CC: X86 ML <x86@...nel.org> > CC: Alexei Starovoitov <ast@...mgrid.com> > CC: Will Drewry <wad@...omium.org> > CC: Kees Cook <keescook@...omium.org> > CC: linux-kernel@...r.kernel.org > --- > arch/x86/include/asm/calling.h | 42 ++++++++++------------------- > arch/x86/include/asm/dwarf2.h | 24 +++++++++++++++++ > arch/x86/kernel/entry_32.S | 21 +++++---------- > arch/x86/lib/atomic64_cx8_32.S | 50 ++++++++++++++--------------------- > arch/x86/lib/checksum_32.S | 60 ++++++++++++++---------------------------- > arch/x86/lib/msr-reg.S | 24 ++++++++--------- > arch/x86/lib/rwsem.S | 44 ++++++++++++++----------------- > arch/x86/lib/thunk_32.S | 18 +++++-------- > arch/x86/lib/thunk_64.S | 54 +++++++++++++------------------------ > 9 files changed, 141 insertions(+), 196 deletions(-) > > diff --git a/arch/x86/include/asm/calling.h b/arch/x86/include/asm/calling.h > index 1f1297b..3c711f2a 100644 > --- a/arch/x86/include/asm/calling.h > +++ b/arch/x86/include/asm/calling.h > @@ -210,37 +210,23 @@ For 32-bit we have the following conventions - kernel is built with > */ > > .macro SAVE_ALL > - pushl_cfi %eax > - CFI_REL_OFFSET eax, 0 > - pushl_cfi %ebp > - CFI_REL_OFFSET ebp, 0 > - pushl_cfi %edi > - CFI_REL_OFFSET edi, 0 > - pushl_cfi %esi > - CFI_REL_OFFSET esi, 0 > - pushl_cfi %edx > - CFI_REL_OFFSET edx, 0 > - pushl_cfi %ecx > - CFI_REL_OFFSET ecx, 0 > - pushl_cfi %ebx > - CFI_REL_OFFSET ebx, 0 > + pushl_cfi_reg eax > + pushl_cfi_reg ebp > + pushl_cfi_reg edi > + pushl_cfi_reg esi > + pushl_cfi_reg edx > + pushl_cfi_reg ecx > + pushl_cfi_reg ebx > .endm > > .macro RESTORE_ALL > - popl_cfi %ebx > - CFI_RESTORE ebx > - popl_cfi %ecx > - CFI_RESTORE ecx > - popl_cfi %edx > - CFI_RESTORE edx > - popl_cfi %esi > - CFI_RESTORE esi > - popl_cfi %edi > - CFI_RESTORE edi > - popl_cfi %ebp > - CFI_RESTORE ebp > - popl_cfi %eax > - CFI_RESTORE eax > + popl_cfi_reg ebx > + popl_cfi_reg ecx > + popl_cfi_reg edx > + popl_cfi_reg esi > + popl_cfi_reg edi > + popl_cfi_reg ebp > + popl_cfi_reg eax > .endm > > #endif /* CONFIG_X86_64 */ > diff --git a/arch/x86/include/asm/dwarf2.h b/arch/x86/include/asm/dwarf2.h > index f6f1598..de1cdaf 100644 > --- a/arch/x86/include/asm/dwarf2.h > +++ b/arch/x86/include/asm/dwarf2.h > @@ -86,11 +86,23 @@ > CFI_ADJUST_CFA_OFFSET 8 > .endm > > + .macro pushq_cfi_reg reg > + pushq %\reg > + CFI_ADJUST_CFA_OFFSET 8 > + CFI_REL_OFFSET \reg, 0 > + .endm > + > .macro popq_cfi reg > popq \reg > CFI_ADJUST_CFA_OFFSET -8 > .endm > > + .macro popq_cfi_reg reg > + popq %\reg > + CFI_ADJUST_CFA_OFFSET -8 > + CFI_RESTORE \reg > + .endm > + > .macro pushfq_cfi > pushfq > CFI_ADJUST_CFA_OFFSET 8 > @@ -116,11 +128,23 @@ > CFI_ADJUST_CFA_OFFSET 4 > .endm > > + .macro pushl_cfi_reg reg > + pushl %\reg > + CFI_ADJUST_CFA_OFFSET 4 > + CFI_REL_OFFSET \reg, 0 > + .endm > + > .macro popl_cfi reg > popl \reg > CFI_ADJUST_CFA_OFFSET -4 > .endm > > + .macro popl_cfi_reg reg > + popl %\reg > + CFI_ADJUST_CFA_OFFSET -4 > + CFI_RESTORE \reg > + .endm > + > .macro pushfl_cfi > pushfl > CFI_ADJUST_CFA_OFFSET 4 > diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S > index 000d419..a4a2eaa 100644 > --- a/arch/x86/kernel/entry_32.S > +++ b/arch/x86/kernel/entry_32.S > @@ -1237,20 +1237,13 @@ error_code: > /*CFI_REL_OFFSET es, 0*/ > pushl_cfi %ds > /*CFI_REL_OFFSET ds, 0*/ > - pushl_cfi %eax > - CFI_REL_OFFSET eax, 0 > - pushl_cfi %ebp > - CFI_REL_OFFSET ebp, 0 > - pushl_cfi %edi > - CFI_REL_OFFSET edi, 0 > - pushl_cfi %esi > - CFI_REL_OFFSET esi, 0 > - pushl_cfi %edx > - CFI_REL_OFFSET edx, 0 > - pushl_cfi %ecx > - CFI_REL_OFFSET ecx, 0 > - pushl_cfi %ebx > - CFI_REL_OFFSET ebx, 0 > + pushl_cfi_reg eax > + pushl_cfi_reg ebp > + pushl_cfi_reg edi > + pushl_cfi_reg esi > + pushl_cfi_reg edx > + pushl_cfi_reg ecx > + pushl_cfi_reg ebx > cld > movl $(__KERNEL_PERCPU), %ecx > movl %ecx, %fs > diff --git a/arch/x86/lib/atomic64_cx8_32.S b/arch/x86/lib/atomic64_cx8_32.S > index f5cc9eb..082a851 100644 > --- a/arch/x86/lib/atomic64_cx8_32.S > +++ b/arch/x86/lib/atomic64_cx8_32.S > @@ -13,16 +13,6 @@ > #include <asm/alternative-asm.h> > #include <asm/dwarf2.h> > > -.macro SAVE reg > - pushl_cfi %\reg > - CFI_REL_OFFSET \reg, 0 > -.endm > - > -.macro RESTORE reg > - popl_cfi %\reg > - CFI_RESTORE \reg > -.endm > - > .macro read64 reg > movl %ebx, %eax > movl %ecx, %edx > @@ -67,10 +57,10 @@ ENDPROC(atomic64_xchg_cx8) > .macro addsub_return func ins insc > ENTRY(atomic64_\func\()_return_cx8) > CFI_STARTPROC > - SAVE ebp > - SAVE ebx > - SAVE esi > - SAVE edi > + pushl_cfi_reg ebp > + pushl_cfi_reg ebx > + pushl_cfi_reg esi > + pushl_cfi_reg edi > > movl %eax, %esi > movl %edx, %edi > @@ -89,10 +79,10 @@ ENTRY(atomic64_\func\()_return_cx8) > 10: > movl %ebx, %eax > movl %ecx, %edx > - RESTORE edi > - RESTORE esi > - RESTORE ebx > - RESTORE ebp > + popl_cfi_reg edi > + popl_cfi_reg esi > + popl_cfi_reg ebx > + popl_cfi_reg ebp > ret > CFI_ENDPROC > ENDPROC(atomic64_\func\()_return_cx8) > @@ -104,7 +94,7 @@ addsub_return sub sub sbb > .macro incdec_return func ins insc > ENTRY(atomic64_\func\()_return_cx8) > CFI_STARTPROC > - SAVE ebx > + pushl_cfi_reg ebx > > read64 %esi > 1: > @@ -119,7 +109,7 @@ ENTRY(atomic64_\func\()_return_cx8) > 10: > movl %ebx, %eax > movl %ecx, %edx > - RESTORE ebx > + popl_cfi_reg ebx > ret > CFI_ENDPROC > ENDPROC(atomic64_\func\()_return_cx8) > @@ -130,7 +120,7 @@ incdec_return dec sub sbb > > ENTRY(atomic64_dec_if_positive_cx8) > CFI_STARTPROC > - SAVE ebx > + pushl_cfi_reg ebx > > read64 %esi > 1: > @@ -146,18 +136,18 @@ ENTRY(atomic64_dec_if_positive_cx8) > 2: > movl %ebx, %eax > movl %ecx, %edx > - RESTORE ebx > + popl_cfi_reg ebx > ret > CFI_ENDPROC > ENDPROC(atomic64_dec_if_positive_cx8) > > ENTRY(atomic64_add_unless_cx8) > CFI_STARTPROC > - SAVE ebp > - SAVE ebx > + pushl_cfi_reg ebp > + pushl_cfi_reg ebx > /* these just push these two parameters on the stack */ > - SAVE edi > - SAVE ecx > + pushl_cfi_reg edi > + pushl_cfi_reg ecx > > movl %eax, %ebp > movl %edx, %edi > @@ -179,8 +169,8 @@ ENTRY(atomic64_add_unless_cx8) > 3: > addl $8, %esp > CFI_ADJUST_CFA_OFFSET -8 > - RESTORE ebx > - RESTORE ebp > + popl_cfi_reg ebx > + popl_cfi_reg ebp > ret > 4: > cmpl %edx, 4(%esp) > @@ -192,7 +182,7 @@ ENDPROC(atomic64_add_unless_cx8) > > ENTRY(atomic64_inc_not_zero_cx8) > CFI_STARTPROC > - SAVE ebx > + pushl_cfi_reg ebx > > read64 %esi > 1: > @@ -209,7 +199,7 @@ ENTRY(atomic64_inc_not_zero_cx8) > > movl $1, %eax > 3: > - RESTORE ebx > + popl_cfi_reg ebx > ret > CFI_ENDPROC > ENDPROC(atomic64_inc_not_zero_cx8) > diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S > index e78b8ee..c3b9953 100644 > --- a/arch/x86/lib/checksum_32.S > +++ b/arch/x86/lib/checksum_32.S > @@ -51,10 +51,8 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum) > */ > ENTRY(csum_partial) > CFI_STARTPROC > - pushl_cfi %esi > - CFI_REL_OFFSET esi, 0 > - pushl_cfi %ebx > - CFI_REL_OFFSET ebx, 0 > + pushl_cfi_reg esi > + pushl_cfi_reg ebx > movl 20(%esp),%eax # Function arg: unsigned int sum > movl 16(%esp),%ecx # Function arg: int len > movl 12(%esp),%esi # Function arg: unsigned char *buff > @@ -131,10 +129,8 @@ ENTRY(csum_partial) > jz 8f > roll $8, %eax > 8: > - popl_cfi %ebx > - CFI_RESTORE ebx > - popl_cfi %esi > - CFI_RESTORE esi > + popl_cfi_reg ebx > + popl_cfi_reg esi > ret > CFI_ENDPROC > ENDPROC(csum_partial) > @@ -145,10 +141,8 @@ ENDPROC(csum_partial) > > ENTRY(csum_partial) > CFI_STARTPROC > - pushl_cfi %esi > - CFI_REL_OFFSET esi, 0 > - pushl_cfi %ebx > - CFI_REL_OFFSET ebx, 0 > + pushl_cfi_reg esi > + pushl_cfi_reg ebx > movl 20(%esp),%eax # Function arg: unsigned int sum > movl 16(%esp),%ecx # Function arg: int len > movl 12(%esp),%esi # Function arg: const unsigned char *buf > @@ -255,10 +249,8 @@ ENTRY(csum_partial) > jz 90f > roll $8, %eax > 90: > - popl_cfi %ebx > - CFI_RESTORE ebx > - popl_cfi %esi > - CFI_RESTORE esi > + popl_cfi_reg ebx > + popl_cfi_reg esi > ret > CFI_ENDPROC > ENDPROC(csum_partial) > @@ -298,12 +290,9 @@ ENTRY(csum_partial_copy_generic) > CFI_STARTPROC > subl $4,%esp > CFI_ADJUST_CFA_OFFSET 4 > - pushl_cfi %edi > - CFI_REL_OFFSET edi, 0 > - pushl_cfi %esi > - CFI_REL_OFFSET esi, 0 > - pushl_cfi %ebx > - CFI_REL_OFFSET ebx, 0 > + pushl_cfi_reg edi > + pushl_cfi_reg esi > + pushl_cfi_reg ebx > movl ARGBASE+16(%esp),%eax # sum > movl ARGBASE+12(%esp),%ecx # len > movl ARGBASE+4(%esp),%esi # src > @@ -412,12 +401,9 @@ DST( movb %cl, (%edi) ) > > .previous > > - popl_cfi %ebx > - CFI_RESTORE ebx > - popl_cfi %esi > - CFI_RESTORE esi > - popl_cfi %edi > - CFI_RESTORE edi > + popl_cfi_reg ebx > + popl_cfi_reg esi > + popl_cfi_reg edi > popl_cfi %ecx # equivalent to addl $4,%esp > ret > CFI_ENDPROC > @@ -441,12 +427,9 @@ ENDPROC(csum_partial_copy_generic) > > ENTRY(csum_partial_copy_generic) > CFI_STARTPROC > - pushl_cfi %ebx > - CFI_REL_OFFSET ebx, 0 > - pushl_cfi %edi > - CFI_REL_OFFSET edi, 0 > - pushl_cfi %esi > - CFI_REL_OFFSET esi, 0 > + pushl_cfi_reg ebx > + pushl_cfi_reg edi > + pushl_cfi_reg esi > movl ARGBASE+4(%esp),%esi #src > movl ARGBASE+8(%esp),%edi #dst > movl ARGBASE+12(%esp),%ecx #len > @@ -506,12 +489,9 @@ DST( movb %dl, (%edi) ) > jmp 7b > .previous > > - popl_cfi %esi > - CFI_RESTORE esi > - popl_cfi %edi > - CFI_RESTORE edi > - popl_cfi %ebx > - CFI_RESTORE ebx > + popl_cfi_reg esi > + popl_cfi_reg edi > + popl_cfi_reg ebx > ret > CFI_ENDPROC > ENDPROC(csum_partial_copy_generic) > diff --git a/arch/x86/lib/msr-reg.S b/arch/x86/lib/msr-reg.S > index f6d13ee..3ca5218 100644 > --- a/arch/x86/lib/msr-reg.S > +++ b/arch/x86/lib/msr-reg.S > @@ -14,8 +14,8 @@ > .macro op_safe_regs op > ENTRY(\op\()_safe_regs) > CFI_STARTPROC > - pushq_cfi %rbx > - pushq_cfi %rbp > + pushq_cfi_reg rbx > + pushq_cfi_reg rbp > movq %rdi, %r10 /* Save pointer */ > xorl %r11d, %r11d /* Return value */ > movl (%rdi), %eax > @@ -35,8 +35,8 @@ ENTRY(\op\()_safe_regs) > movl %ebp, 20(%r10) > movl %esi, 24(%r10) > movl %edi, 28(%r10) > - popq_cfi %rbp > - popq_cfi %rbx > + popq_cfi_reg rbp > + popq_cfi_reg rbx > ret > 3: > CFI_RESTORE_STATE > @@ -53,10 +53,10 @@ ENDPROC(\op\()_safe_regs) > .macro op_safe_regs op > ENTRY(\op\()_safe_regs) > CFI_STARTPROC > - pushl_cfi %ebx > - pushl_cfi %ebp > - pushl_cfi %esi > - pushl_cfi %edi > + pushl_cfi_reg ebx > + pushl_cfi_reg ebp > + pushl_cfi_reg esi > + pushl_cfi_reg edi > pushl_cfi $0 /* Return value */ > pushl_cfi %eax > movl 4(%eax), %ecx > @@ -80,10 +80,10 @@ ENTRY(\op\()_safe_regs) > movl %esi, 24(%eax) > movl %edi, 28(%eax) > popl_cfi %eax > - popl_cfi %edi > - popl_cfi %esi > - popl_cfi %ebp > - popl_cfi %ebx > + popl_cfi_reg edi > + popl_cfi_reg esi > + popl_cfi_reg ebp > + popl_cfi_reg ebx > ret > 3: > CFI_RESTORE_STATE > diff --git a/arch/x86/lib/rwsem.S b/arch/x86/lib/rwsem.S > index 5dff5f0..2322abe 100644 > --- a/arch/x86/lib/rwsem.S > +++ b/arch/x86/lib/rwsem.S > @@ -34,10 +34,10 @@ > */ > > #define save_common_regs \ > - pushl_cfi %ecx; CFI_REL_OFFSET ecx, 0 > + pushl_cfi_reg ecx > > #define restore_common_regs \ > - popl_cfi %ecx; CFI_RESTORE ecx > + popl_cfi_reg ecx > > /* Avoid uglifying the argument copying x86-64 needs to do. */ > .macro movq src, dst > @@ -64,22 +64,22 @@ > */ > > #define save_common_regs \ > - pushq_cfi %rdi; CFI_REL_OFFSET rdi, 0; \ > - pushq_cfi %rsi; CFI_REL_OFFSET rsi, 0; \ > - pushq_cfi %rcx; CFI_REL_OFFSET rcx, 0; \ > - pushq_cfi %r8; CFI_REL_OFFSET r8, 0; \ > - pushq_cfi %r9; CFI_REL_OFFSET r9, 0; \ > - pushq_cfi %r10; CFI_REL_OFFSET r10, 0; \ > - pushq_cfi %r11; CFI_REL_OFFSET r11, 0 > + pushq_cfi_reg rdi; \ > + pushq_cfi_reg rsi; \ > + pushq_cfi_reg rcx; \ > + pushq_cfi_reg r8; \ > + pushq_cfi_reg r9; \ > + pushq_cfi_reg r10; \ > + pushq_cfi_reg r11 > > #define restore_common_regs \ > - popq_cfi %r11; CFI_RESTORE r11; \ > - popq_cfi %r10; CFI_RESTORE r10; \ > - popq_cfi %r9; CFI_RESTORE r9; \ > - popq_cfi %r8; CFI_RESTORE r8; \ > - popq_cfi %rcx; CFI_RESTORE rcx; \ > - popq_cfi %rsi; CFI_RESTORE rsi; \ > - popq_cfi %rdi; CFI_RESTORE rdi > + popq_cfi_reg r11; \ > + popq_cfi_reg r10; \ > + popq_cfi_reg r9; \ > + popq_cfi_reg r8; \ > + popq_cfi_reg rcx; \ > + popq_cfi_reg rsi; \ > + popq_cfi_reg rdi > > #endif > > @@ -87,12 +87,10 @@ > ENTRY(call_rwsem_down_read_failed) > CFI_STARTPROC > save_common_regs > - __ASM_SIZE(push,_cfi) %__ASM_REG(dx) > - CFI_REL_OFFSET __ASM_REG(dx), 0 > + __ASM_SIZE(push,_cfi_reg) __ASM_REG(dx) > movq %rax,%rdi > call rwsem_down_read_failed > - __ASM_SIZE(pop,_cfi) %__ASM_REG(dx) > - CFI_RESTORE __ASM_REG(dx) > + __ASM_SIZE(pop,_cfi_reg) __ASM_REG(dx) > restore_common_regs > ret > CFI_ENDPROC > @@ -124,12 +122,10 @@ ENDPROC(call_rwsem_wake) > ENTRY(call_rwsem_downgrade_wake) > CFI_STARTPROC > save_common_regs > - __ASM_SIZE(push,_cfi) %__ASM_REG(dx) > - CFI_REL_OFFSET __ASM_REG(dx), 0 > + __ASM_SIZE(push,_cfi_reg) __ASM_REG(dx) > movq %rax,%rdi > call rwsem_downgrade_wake > - __ASM_SIZE(pop,_cfi) %__ASM_REG(dx) > - CFI_RESTORE __ASM_REG(dx) > + __ASM_SIZE(pop,_cfi_reg) __ASM_REG(dx) > restore_common_regs > ret > CFI_ENDPROC > diff --git a/arch/x86/lib/thunk_32.S b/arch/x86/lib/thunk_32.S > index e28cdaf..5eb7150 100644 > --- a/arch/x86/lib/thunk_32.S > +++ b/arch/x86/lib/thunk_32.S > @@ -13,12 +13,9 @@ > .globl \name > \name: > CFI_STARTPROC > - pushl_cfi %eax > - CFI_REL_OFFSET eax, 0 > - pushl_cfi %ecx > - CFI_REL_OFFSET ecx, 0 > - pushl_cfi %edx > - CFI_REL_OFFSET edx, 0 > + pushl_cfi_reg eax > + pushl_cfi_reg ecx > + pushl_cfi_reg edx > > .if \put_ret_addr_in_eax > /* Place EIP in the arg1 */ > @@ -26,12 +23,9 @@ > .endif > > call \func > - popl_cfi %edx > - CFI_RESTORE edx > - popl_cfi %ecx > - CFI_RESTORE ecx > - popl_cfi %eax > - CFI_RESTORE eax > + popl_cfi_reg edx > + popl_cfi_reg ecx > + popl_cfi_reg eax > ret > CFI_ENDPROC > _ASM_NOKPROBE(\name) > diff --git a/arch/x86/lib/thunk_64.S b/arch/x86/lib/thunk_64.S > index 8ec443a..f89ba4e9 100644 > --- a/arch/x86/lib/thunk_64.S > +++ b/arch/x86/lib/thunk_64.S > @@ -17,24 +17,15 @@ > CFI_STARTPROC > > /* this one pushes 9 elems, the next one would be %rIP */ > - pushq_cfi %rdi > - CFI_REL_OFFSET rdi, 0 > - pushq_cfi %rsi > - CFI_REL_OFFSET rsi, 0 > - pushq_cfi %rdx > - CFI_REL_OFFSET rdx, 0 > - pushq_cfi %rcx > - CFI_REL_OFFSET rcx, 0 > - pushq_cfi %rax > - CFI_REL_OFFSET rax, 0 > - pushq_cfi %r8 > - CFI_REL_OFFSET r8, 0 > - pushq_cfi %r9 > - CFI_REL_OFFSET r9, 0 > - pushq_cfi %r10 > - CFI_REL_OFFSET r10, 0 > - pushq_cfi %r11 > - CFI_REL_OFFSET r11, 0 > + pushq_cfi_reg rdi > + pushq_cfi_reg rsi > + pushq_cfi_reg rdx > + pushq_cfi_reg rcx > + pushq_cfi_reg rax > + pushq_cfi_reg r8 > + pushq_cfi_reg r9 > + pushq_cfi_reg r10 > + pushq_cfi_reg r11 > > .if \put_ret_addr_in_rdi > /* 9*8(%rsp) is return addr on stack */ > @@ -69,24 +60,15 @@ > CFI_STARTPROC > CFI_ADJUST_CFA_OFFSET 9*8 > restore: > - popq_cfi %r11 > - CFI_RESTORE r11 > - popq_cfi %r10 > - CFI_RESTORE r10 > - popq_cfi %r9 > - CFI_RESTORE r9 > - popq_cfi %r8 > - CFI_RESTORE r8 > - popq_cfi %rax > - CFI_RESTORE rax > - popq_cfi %rcx > - CFI_RESTORE rcx > - popq_cfi %rdx > - CFI_RESTORE rdx > - popq_cfi %rsi > - CFI_RESTORE rsi > - popq_cfi %rdi > - CFI_RESTORE rdi > + popq_cfi_reg r11 > + popq_cfi_reg r10 > + popq_cfi_reg r9 > + popq_cfi_reg r8 > + popq_cfi_reg rax > + popq_cfi_reg rcx > + popq_cfi_reg rdx > + popq_cfi_reg rsi > + popq_cfi_reg rdi > ret > CFI_ENDPROC > _ASM_NOKPROBE(restore) > -- > 1.8.1.4 > -- Andy Lutomirski AMA Capital Management, LLC -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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