* Problems compiling with KCFLAGS="-frecord-gcc-switches"
@ 2017-09-29 20:00 Guenter Roeck
2017-09-29 20:38 ` Guenter Roeck
2017-09-29 20:46 ` Josh Poimboeuf
0 siblings, 2 replies; 9+ messages in thread
From: Guenter Roeck @ 2017-09-29 20:00 UTC (permalink / raw)
To: Josh Poimboeuf; +Cc: linux-kernel
Hi Josh,
when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
I get the folllowing build warning/error.
make allmodconfig
KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
arch/x86/kvm/emulate.o: warning:
objtool: .GCC.command.line+0x0: special: can't find new instruction
Building a full image aborts with:
WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
from the (unknown reference) (unknown)
to the variable .GCC.command.line:kvm_fastop_exception
FATAL: The relocation at __ex_table+0x4c references
section ".GCC.command.line" which is not executable, IOW
the kernel will fault if it ever tries to
jump to it. Something is seriously wrong
and should be fixed.
make[2]: *** [arch/x86/kvm/kvm.o] Error 1
Any idea what might cause this problem ?
Thanks,
Guenter
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-09-29 20:00 Problems compiling with KCFLAGS="-frecord-gcc-switches" Guenter Roeck
@ 2017-09-29 20:38 ` Guenter Roeck
2017-09-29 20:58 ` Josh Poimboeuf
2017-09-29 20:46 ` Josh Poimboeuf
1 sibling, 1 reply; 9+ messages in thread
From: Guenter Roeck @ 2017-09-29 20:38 UTC (permalink / raw)
To: Josh Poimboeuf; +Cc: linux-kernel
On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
> Hi Josh,
>
> when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
> I get the folllowing build warning/error.
>
> make allmodconfig
> KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
> ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
>
> arch/x86/kvm/emulate.o: warning:
> objtool: .GCC.command.line+0x0: special: can't find new instruction
>
> Building a full image aborts with:
>
> WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
> from the (unknown reference) (unknown)
> to the variable .GCC.command.line:kvm_fastop_exception
> FATAL: The relocation at __ex_table+0x4c references
> section ".GCC.command.line" which is not executable, IOW
> the kernel will fault if it ever tries to
> jump to it. Something is seriously wrong
> and should be fixed.
> make[2]: *** [arch/x86/kvm/kvm.o] Error 1
>
> Any idea what might cause this problem ?
>
Here is another interesting problem, seen when building arm64 allmodconfig
-CONFIG_CPU_BIG_ENDIAN +CONFIG_EFI.
kallsyms failure:
relative symbol value 0xffffff9008073000 out of range in relative mode
This is due to symbols such as
000000000000000e n __efistub_$d
in the symbol table. Those are not filtered out by kallsyms, resulting in a
relative "base" address of 0x0e, and all other symbols are out of range.
Those symbols are only generated in efi/libstubs.
Any idea what might be going on there, and how to fix it ?
An easy fix would be something like
- else if (stype == 'N')
+ else if (toupper(stype) == 'N')
in kallsyms, but that doesn't seem like a clean solution to me.
Thanks,
Guenter
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-09-29 20:00 Problems compiling with KCFLAGS="-frecord-gcc-switches" Guenter Roeck
2017-09-29 20:38 ` Guenter Roeck
@ 2017-09-29 20:46 ` Josh Poimboeuf
2017-09-30 1:07 ` Guenter Roeck
2017-10-03 17:54 ` Guenter Roeck
1 sibling, 2 replies; 9+ messages in thread
From: Josh Poimboeuf @ 2017-09-29 20:46 UTC (permalink / raw)
To: Guenter Roeck; +Cc: linux-kernel
On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
> Hi Josh,
>
> when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
> I get the folllowing build warning/error.
>
> make allmodconfig
> KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
> ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
>
> arch/x86/kvm/emulate.o: warning:
> objtool: .GCC.command.line+0x0: special: can't find new instruction
>
> Building a full image aborts with:
>
> WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
> from the (unknown reference) (unknown)
> to the variable .GCC.command.line:kvm_fastop_exception
> FATAL: The relocation at __ex_table+0x4c references
> section ".GCC.command.line" which is not executable, IOW
> the kernel will fault if it ever tries to
> jump to it. Something is seriously wrong
> and should be fixed.
> make[2]: *** [arch/x86/kvm/kvm.o] Error 1
>
> Any idea what might cause this problem ?
I think this is a GCC bug with the -frecord-gcc-switches feature. Due
to some ambiguity in some inline asm in emulate.c, it's placing some
kernel code in the .GCC.command.line section.
This seems to fix it:
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index a36254cbf776..d90cdc77e077 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -425,8 +425,10 @@ static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *));
#op " %al \n\t" \
FOP_RET
-asm(".global kvm_fastop_exception \n"
- "kvm_fastop_exception: xor %esi, %esi; ret");
+asm(".pushsection .fixup, \"ax\"\n"
+ ".global kvm_fastop_exception \n"
+ "kvm_fastop_exception: xor %esi, %esi; ret\n"
+ ".popsection");
FOP_START(setcc)
FOP_SETCC(seto)
^ permalink raw reply related [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-09-29 20:38 ` Guenter Roeck
@ 2017-09-29 20:58 ` Josh Poimboeuf
2017-09-29 23:08 ` Guenter Roeck
0 siblings, 1 reply; 9+ messages in thread
From: Josh Poimboeuf @ 2017-09-29 20:58 UTC (permalink / raw)
To: Guenter Roeck; +Cc: linux-kernel
On Fri, Sep 29, 2017 at 01:38:43PM -0700, Guenter Roeck wrote:
> On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
> > Hi Josh,
> >
> > when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
> > I get the folllowing build warning/error.
> >
> > make allmodconfig
> > KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
> > ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
> >
> > arch/x86/kvm/emulate.o: warning:
> > objtool: .GCC.command.line+0x0: special: can't find new instruction
> >
> > Building a full image aborts with:
> >
> > WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
> > from the (unknown reference) (unknown)
> > to the variable .GCC.command.line:kvm_fastop_exception
> > FATAL: The relocation at __ex_table+0x4c references
> > section ".GCC.command.line" which is not executable, IOW
> > the kernel will fault if it ever tries to
> > jump to it. Something is seriously wrong
> > and should be fixed.
> > make[2]: *** [arch/x86/kvm/kvm.o] Error 1
> >
> > Any idea what might cause this problem ?
> >
>
> Here is another interesting problem, seen when building arm64 allmodconfig
> -CONFIG_CPU_BIG_ENDIAN +CONFIG_EFI.
>
> kallsyms failure:
> relative symbol value 0xffffff9008073000 out of range in relative mode
>
> This is due to symbols such as
>
> 000000000000000e n __efistub_$d
>
> in the symbol table. Those are not filtered out by kallsyms, resulting in a
> relative "base" address of 0x0e, and all other symbols are out of range.
> Those symbols are only generated in efi/libstubs.
>
> Any idea what might be going on there, and how to fix it ?
> An easy fix would be something like
>
> - else if (stype == 'N')
> + else if (toupper(stype) == 'N')
>
> in kallsyms, but that doesn't seem like a clean solution to me.
Not sure... What does 'n' mean? I don't see it in the man page for nm.
--
Josh
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-09-29 20:58 ` Josh Poimboeuf
@ 2017-09-29 23:08 ` Guenter Roeck
0 siblings, 0 replies; 9+ messages in thread
From: Guenter Roeck @ 2017-09-29 23:08 UTC (permalink / raw)
To: Josh Poimboeuf; +Cc: linux-kernel
On 09/29/2017 01:58 PM, Josh Poimboeuf wrote:
> On Fri, Sep 29, 2017 at 01:38:43PM -0700, Guenter Roeck wrote:
>> On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
>>> Hi Josh,
>>>
>>> when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
>>> I get the folllowing build warning/error.
>>>
>>> make allmodconfig
>>> KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
>>> ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
>>>
>>> arch/x86/kvm/emulate.o: warning:
>>> objtool: .GCC.command.line+0x0: special: can't find new instruction
>>>
>>> Building a full image aborts with:
>>>
>>> WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
>>> from the (unknown reference) (unknown)
>>> to the variable .GCC.command.line:kvm_fastop_exception
>>> FATAL: The relocation at __ex_table+0x4c references
>>> section ".GCC.command.line" which is not executable, IOW
>>> the kernel will fault if it ever tries to
>>> jump to it. Something is seriously wrong
>>> and should be fixed.
>>> make[2]: *** [arch/x86/kvm/kvm.o] Error 1
>>>
>>> Any idea what might cause this problem ?
>>>
>>
>> Here is another interesting problem, seen when building arm64 allmodconfig
>> -CONFIG_CPU_BIG_ENDIAN +CONFIG_EFI.
>>
>> kallsyms failure:
>> relative symbol value 0xffffff9008073000 out of range in relative mode
>>
>> This is due to symbols such as
>>
>> 000000000000000e n __efistub_$d
>>
>> in the symbol table. Those are not filtered out by kallsyms, resulting in a
>> relative "base" address of 0x0e, and all other symbols are out of range.
>> Those symbols are only generated in efi/libstubs.
>>
>> Any idea what might be going on there, and how to fix it ?
>> An easy fix would be something like
>>
>> - else if (stype == 'N')
>> + else if (toupper(stype) == 'N')
>>
>> in kallsyms, but that doesn't seem like a clean solution to me.
>
> Not sure... What does 'n' mean? I don't see it in the man page for nm.
>
Good question. As far as I can see, gcc uses it to mark symbols associated
with -frecord-gcc-switches, presumably in the .GCC.command.line section.
Guenter
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-09-29 20:46 ` Josh Poimboeuf
@ 2017-09-30 1:07 ` Guenter Roeck
2017-10-03 17:54 ` Guenter Roeck
1 sibling, 0 replies; 9+ messages in thread
From: Guenter Roeck @ 2017-09-30 1:07 UTC (permalink / raw)
To: Josh Poimboeuf; +Cc: linux-kernel
On 09/29/2017 01:46 PM, Josh Poimboeuf wrote:
> On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
>> Hi Josh,
>>
>> when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
>> I get the folllowing build warning/error.
>>
>> make allmodconfig
>> KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
>> ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
>>
>> arch/x86/kvm/emulate.o: warning:
>> objtool: .GCC.command.line+0x0: special: can't find new instruction
>>
>> Building a full image aborts with:
>>
>> WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
>> from the (unknown reference) (unknown)
>> to the variable .GCC.command.line:kvm_fastop_exception
>> FATAL: The relocation at __ex_table+0x4c references
>> section ".GCC.command.line" which is not executable, IOW
>> the kernel will fault if it ever tries to
>> jump to it. Something is seriously wrong
>> and should be fixed.
>> make[2]: *** [arch/x86/kvm/kvm.o] Error 1
>>
>> Any idea what might cause this problem ?
>
> I think this is a GCC bug with the -frecord-gcc-switches feature. Due
> to some ambiguity in some inline asm in emulate.c, it's placing some
> kernel code in the .GCC.command.line section.
>
Interesting. Makes me wonder if it is doing something similar in the efi code.
> This seems to fix it:
>
>
> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
> index a36254cbf776..d90cdc77e077 100644
> --- a/arch/x86/kvm/emulate.c
> +++ b/arch/x86/kvm/emulate.c
> @@ -425,8 +425,10 @@ static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *));
> #op " %al \n\t" \
> FOP_RET
>
> -asm(".global kvm_fastop_exception \n"
> - "kvm_fastop_exception: xor %esi, %esi; ret");
> +asm(".pushsection .fixup, \"ax\"\n"
> + ".global kvm_fastop_exception \n"
> + "kvm_fastop_exception: xor %esi, %esi; ret\n"
> + ".popsection");
>
> FOP_START(setcc)
> FOP_SETCC(seto)
>
Yes, that fixes the problem for me.
Do you want to send a real patch ? If yes, feel free to add
Tested-by: Guenter Roeck <linux@roeck-us.net>
Thanks,
Guenter
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-09-29 20:46 ` Josh Poimboeuf
2017-09-30 1:07 ` Guenter Roeck
@ 2017-10-03 17:54 ` Guenter Roeck
2017-10-03 18:00 ` Josh Poimboeuf
1 sibling, 1 reply; 9+ messages in thread
From: Guenter Roeck @ 2017-10-03 17:54 UTC (permalink / raw)
To: Josh Poimboeuf; +Cc: linux-kernel
Hi Josh,
On Fri, Sep 29, 2017 at 03:46:09PM -0500, Josh Poimboeuf wrote:
> On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
> > Hi Josh,
> >
> > when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
> > I get the folllowing build warning/error.
> >
> > make allmodconfig
> > KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
> > ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
> >
> > arch/x86/kvm/emulate.o: warning:
> > objtool: .GCC.command.line+0x0: special: can't find new instruction
> >
> > Building a full image aborts with:
> >
> > WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
> > from the (unknown reference) (unknown)
> > to the variable .GCC.command.line:kvm_fastop_exception
> > FATAL: The relocation at __ex_table+0x4c references
> > section ".GCC.command.line" which is not executable, IOW
> > the kernel will fault if it ever tries to
> > jump to it. Something is seriously wrong
> > and should be fixed.
> > make[2]: *** [arch/x86/kvm/kvm.o] Error 1
> >
> > Any idea what might cause this problem ?
>
> I think this is a GCC bug with the -frecord-gcc-switches feature. Due
> to some ambiguity in some inline asm in emulate.c, it's placing some
> kernel code in the .GCC.command.line section.
>
> This seems to fix it:
>
>
> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
> index a36254cbf776..d90cdc77e077 100644
> --- a/arch/x86/kvm/emulate.c
> +++ b/arch/x86/kvm/emulate.c
> @@ -425,8 +425,10 @@ static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *));
> #op " %al \n\t" \
> FOP_RET
>
> -asm(".global kvm_fastop_exception \n"
> - "kvm_fastop_exception: xor %esi, %esi; ret");
> +asm(".pushsection .fixup, \"ax\"\n"
> + ".global kvm_fastop_exception \n"
> + "kvm_fastop_exception: xor %esi, %esi; ret\n"
> + ".popsection");
>
> FOP_START(setcc)
> FOP_SETCC(seto)
Do you plan to submit a patch for this, or do you want me to do it ?
Thanks,
Guenter
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-10-03 17:54 ` Guenter Roeck
@ 2017-10-03 18:00 ` Josh Poimboeuf
2017-10-03 20:27 ` Guenter Roeck
0 siblings, 1 reply; 9+ messages in thread
From: Josh Poimboeuf @ 2017-10-03 18:00 UTC (permalink / raw)
To: Guenter Roeck; +Cc: linux-kernel
On Tue, Oct 03, 2017 at 10:54:57AM -0700, Guenter Roeck wrote:
> Hi Josh,
>
> On Fri, Sep 29, 2017 at 03:46:09PM -0500, Josh Poimboeuf wrote:
> > On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
> > > Hi Josh,
> > >
> > > when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
> > > I get the folllowing build warning/error.
> > >
> > > make allmodconfig
> > > KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
> > > ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
> > >
> > > arch/x86/kvm/emulate.o: warning:
> > > objtool: .GCC.command.line+0x0: special: can't find new instruction
> > >
> > > Building a full image aborts with:
> > >
> > > WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
> > > from the (unknown reference) (unknown)
> > > to the variable .GCC.command.line:kvm_fastop_exception
> > > FATAL: The relocation at __ex_table+0x4c references
> > > section ".GCC.command.line" which is not executable, IOW
> > > the kernel will fault if it ever tries to
> > > jump to it. Something is seriously wrong
> > > and should be fixed.
> > > make[2]: *** [arch/x86/kvm/kvm.o] Error 1
> > >
> > > Any idea what might cause this problem ?
> >
> > I think this is a GCC bug with the -frecord-gcc-switches feature. Due
> > to some ambiguity in some inline asm in emulate.c, it's placing some
> > kernel code in the .GCC.command.line section.
> >
> > This seems to fix it:
> >
> >
> > diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
> > index a36254cbf776..d90cdc77e077 100644
> > --- a/arch/x86/kvm/emulate.c
> > +++ b/arch/x86/kvm/emulate.c
> > @@ -425,8 +425,10 @@ static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *));
> > #op " %al \n\t" \
> > FOP_RET
> >
> > -asm(".global kvm_fastop_exception \n"
> > - "kvm_fastop_exception: xor %esi, %esi; ret");
> > +asm(".pushsection .fixup, \"ax\"\n"
> > + ".global kvm_fastop_exception \n"
> > + "kvm_fastop_exception: xor %esi, %esi; ret\n"
> > + ".popsection");
> >
> > FOP_START(setcc)
> > FOP_SETCC(seto)
>
> Do you plan to submit a patch for this, or do you want me to do it ?
Sorry, I've been juggling a bunch of other bugs. I'll submit it soon.
--
Josh
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Problems compiling with KCFLAGS="-frecord-gcc-switches"
2017-10-03 18:00 ` Josh Poimboeuf
@ 2017-10-03 20:27 ` Guenter Roeck
0 siblings, 0 replies; 9+ messages in thread
From: Guenter Roeck @ 2017-10-03 20:27 UTC (permalink / raw)
To: Josh Poimboeuf; +Cc: linux-kernel
On Tue, Oct 03, 2017 at 01:00:23PM -0500, Josh Poimboeuf wrote:
> On Tue, Oct 03, 2017 at 10:54:57AM -0700, Guenter Roeck wrote:
> > Hi Josh,
> >
> > On Fri, Sep 29, 2017 at 03:46:09PM -0500, Josh Poimboeuf wrote:
> > > On Fri, Sep 29, 2017 at 01:00:56PM -0700, Guenter Roeck wrote:
> > > > Hi Josh,
> > > >
> > > > when trying to compile an image with KCFLAGS="-frecord-gcc-switches",
> > > > I get the folllowing build warning/error.
> > > >
> > > > make allmodconfig
> > > > KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o
> > > > ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
> > > >
> > > > arch/x86/kvm/emulate.o: warning:
> > > > objtool: .GCC.command.line+0x0: special: can't find new instruction
> > > >
> > > > Building a full image aborts with:
> > > >
> > > > WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference
> > > > from the (unknown reference) (unknown)
> > > > to the variable .GCC.command.line:kvm_fastop_exception
> > > > FATAL: The relocation at __ex_table+0x4c references
> > > > section ".GCC.command.line" which is not executable, IOW
> > > > the kernel will fault if it ever tries to
> > > > jump to it. Something is seriously wrong
> > > > and should be fixed.
> > > > make[2]: *** [arch/x86/kvm/kvm.o] Error 1
> > > >
> > > > Any idea what might cause this problem ?
> > >
> > > I think this is a GCC bug with the -frecord-gcc-switches feature. Due
> > > to some ambiguity in some inline asm in emulate.c, it's placing some
> > > kernel code in the .GCC.command.line section.
> > >
> > > This seems to fix it:
> > >
> > >
> > > diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
> > > index a36254cbf776..d90cdc77e077 100644
> > > --- a/arch/x86/kvm/emulate.c
> > > +++ b/arch/x86/kvm/emulate.c
> > > @@ -425,8 +425,10 @@ static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *));
> > > #op " %al \n\t" \
> > > FOP_RET
> > >
> > > -asm(".global kvm_fastop_exception \n"
> > > - "kvm_fastop_exception: xor %esi, %esi; ret");
> > > +asm(".pushsection .fixup, \"ax\"\n"
> > > + ".global kvm_fastop_exception \n"
> > > + "kvm_fastop_exception: xor %esi, %esi; ret\n"
> > > + ".popsection");
> > >
> > > FOP_START(setcc)
> > > FOP_SETCC(seto)
> >
> > Do you plan to submit a patch for this, or do you want me to do it ?
>
> Sorry, I've been juggling a bunch of other bugs. I'll submit it soon.
>
Welcome to the club ...
Thanks!
Guenter
^ permalink raw reply [flat|nested] 9+ messages in thread
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2017-09-29 20:00 Problems compiling with KCFLAGS="-frecord-gcc-switches" Guenter Roeck
2017-09-29 20:38 ` Guenter Roeck
2017-09-29 20:58 ` Josh Poimboeuf
2017-09-29 23:08 ` Guenter Roeck
2017-09-29 20:46 ` Josh Poimboeuf
2017-09-30 1:07 ` Guenter Roeck
2017-10-03 17:54 ` Guenter Roeck
2017-10-03 18:00 ` Josh Poimboeuf
2017-10-03 20:27 ` Guenter Roeck
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