Re: linux-next: Tree for March 8 (BROKEN: arch/x86/kernel/entry_32.S? Debian's binutils/as?)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Mar 8, 2011 at 9:25 PM, Alexander van Heukelum
<heukelum@xxxxxxxxxxx> wrote:
> On Tue, 08 Mar 2011 18:53 +0100, "Sedat Dilek" <sedat.dilek@xxxxxxxxxxxxxx> wrote:
>> On Tue, Mar 8, 2011 at 6:27 PM, Alexander van Heukelum
>> <heukelum@xxxxxxxxxxx> wrote:
>> > On Tue, 08 Mar 2011 16:42 +0100, "Sedat Dilek" <sedat.dilek@xxxxxxxxxxxxxx> wrote:
>> >> On 3/8/11, Sedat Dilek <sedat.dilek@xxxxxxxxxxxxxx> wrote:
>> >> > On 3/8/11, H.J. Lu <hjl.tools@xxxxxxxxx> wrote:
>> >> >> On Tue, Mar 8, 2011 at 2:44 AM, Sedat Dilek <sedat.dilek@xxxxxxxxxxxxxx>
>> >> >> wrote:
>> >> >>> Hi,
>> >> >>>
>> >> >>> my build of linux-next (next-20110308, the same with the one from
>> >> >>> yesterday) is broken.
>> >> >>> (I translated the German output.)
>> >> >>>
>> >> >>> [ build.log ]
>> >> >>> ÂAS Â Â Âarch/x86/kernel/entry_32.o
>> >> >>> /home/sd/src/linux-2.6/linux-2.6.38-rc7/debian/build/source_i386_none/arch/x86/kernel/entry_32.S:
>> >> >>> Assembler messages:
>> >> >>> /home/sd/src/linux-2.6/linux-2.6.38-rc7/debian/build/source_i386_none/arch/x86/kernel/entry_32.S:1421:
>> >> >>> Error: .size expression does not evaluate to a constant
>> >> >>> make[6]: *** [arch/x86/kernel/entry_32.o] Fehler 1 (Error 1)
>> >> >>> make[5]: *** [arch/x86/kernel] Fehler 2 (Error 2)
>> >> >>> make[4]: *** [arch/x86] Fehler 2 (Error 2)
>> >> >>> make[4]: *** Warte auf noch nicht beendete Prozesse... (Waiting for
>> >> >>> unfinished jobs...)
>> >> >>>
>> >> >>
>> >> >> This is a kernel bug. ÂPlease use the latest binutils from CVS.
>> >> >> It will tell you which symbol causes this.
>> >> >>
>> >> >>
>> >> >> --
>> >> >> H.J.
>> >> >>
>> >> >
>> >> > Yeah, I have cherry-picked these two upstream commits before you have
>> >> > mentionned it...
>> >> >
>> >> > 0001-Mention-symbol-name-in-non-constant-.size-expression.patch
>> >> > Â Â Â Â(Cherry-picked from commit b9521fc0be7945fc842ce1197e241a023378125d)
>> >> > 0002-Revert-the-last-change-on-gas-elf-bad-size.err.patch
>> >> > Â Â Â Â(Cherry-picked from commit cbd141bb69f791de7ea1581abe7afb34f0c61288)
>> >> >
>> >> > ... and have built with them a new binutils Debian package.
>> >> >
>> >> > The error looks now like this (sorry for the German output):
>> >> > ...
>> >> > Â AS Â Â Âarch/x86/kernel/entry_32.o
>> >> > /home/sd/src/linux-2.6/linux-2.6.38-rc7/debian/build/source_i386_none/arch/x86/kernel/entry_32.S:
>> >> > Assembler messages:
>> >> > /home/sd/src/linux-2.6/linux-2.6.38-rc7/debian/build/source_i386_none/arch/x86/kernel/entry_32.S:1421:
>> >> > Error: .size expression with symbol `apf_page_fault' does not evaluate
>> >> > to a constant
>> >> > make[6]: *** [arch/x86/kernel/entry_32.o] Fehler 1
>> >> > make[5]: *** [arch/x86/kernel] Fehler 2
>> >> > make[5]: *** Warte auf noch nicht beendete Prozesse...
>> >> >
>> >> > Anyway, before more riddling around it would be very helpful to have a
>> >> > clear pointer if there is a fix around... That building, testing and
>> >> > installing took me now several hours.
>> >> > And... yeah, backports to 2.21-branch appreciated.
>> >> >
>> >> > - Sedat -
>> >> >
>> >>
>> >> After a quick look into the source, it seems attached patch fixes the
>> >> issue.
>> >> Is that OK?
>> >
>> > Hi Sedat,
>> >
>> > The patch ( https://lkml.org/lkml/2011/3/8/203 ) is ok, feel free to add
>> > Acked-by: Alexander van Heukelum <heukelum@xxxxxxxxxxx>
>> >
>> > Better description might be something like:
>> >
>> > i386: Fix mismatched ENTRY/END pair.
>> >
>> > Under CONFIG_KVM_GUEST=y, the following part of entry_32.S causes a compile failure.
>> >
>> > 1409 #ifdef CONFIG_KVM_GUEST
>> > 1410 ENTRY(async_page_fault)
>> > 1411 Â Â Â Â RING0_EC_FRAME
>> > 1412 Â Â Â Â pushl $do_async_page_fault
>> > 1413 Â Â Â Â CFI_ADJUST_CFA_OFFSET 4
>> > 1414 Â Â Â Â jmp error_code
>> > 1415 Â Â Â Â CFI_ENDPROC
>> > 1416 END(apf_page_fault)
>> > 1417 #endif
>> >
>> > Replace apf_page_fault with async_page_fault, as intended.
>> >
>> > Greetings,
>> > Â ÂAlexander
>> >
>> >> - Sedat -
>> >>
>> >> Email had 1 attachment:
>> >> + 0001-x86-Fix-build-failure-with-binutils-as-from-upstream.patch
>> >> Â 1k (text/x-patch)
>> >
>>
>> As I said, quick view on the code, quick fix :-).
>>
>> Your description is definitive more meaningful.
>> I can refresh my patch and add your ACK.
>>
>> Anyway, I continued after dinner and with the above patch I ran into
>> the next problem:
>> [ build.log ]
>> ...
>> Â AS Â Â Âarch/x86/kernel/acpi/wakeup_rm.o
>> /home/sd/src/linux-2.6/linux-2.6.38-rc7/debian/build/source_i386_none/arch/x86/kernel/acpi/wakeup_rm.S:
>> Assembler messages:
>> /home/sd/src/linux-2.6/linux-2.6.38-rc7/debian/build/source_i386_none/arch/x86/kernel/acpi/wakeup_rm.S:12:
>> Error: .size expression with symbol `wakeup_code_start' does not
>> evaluate to a constant
>
> No idea what's wrong there. But my version of wakeup_rm.S has only 10 lines...
>
> Â Â 1 Â/*
> Â Â 2 Â * Wrapper script for the realmode binary as a transport object
> Â Â 3 Â * before copying to low memory.
> Â Â 4 Â */
> Â Â 5 Â Â Â Â Â.section ".rodata","a"
> Â Â 6 Â Â Â Â Â.globl Âwakeup_code_start, wakeup_code_end
> Â Â 7 Âwakeup_code_start:
> Â Â 8 Â Â Â Â Â.incbin "arch/x86/kernel/acpi/realmode/wakeup.bin"
> Â Â 9 Âwakeup_code_end:
>  Â10     Â.size  wakeup_code_start, .-wakeup_code_start
>
> And it compiles just fine.
> The fix for entry_32.S is valid, though, and necessary for mainline.
>
> Greetings,
> Â ÂAlexander
>
>> I am unsure how to fix that and open for feedback.
>>
>> - Sedat -
>>
>

The file in linux-next (next-20110308) looks different (the above code
looks more logical to me)

[ arch/x86/kernel/acpi/wakeup_rm.S ]

/*
 * Wrapper script for the realmode binary as a transport object
 * before copying to low memory.
 */
#include <asm/page_types.h>

        .section ".x86_trampoline","a"
        .balign PAGE_SIZE
        .globl  acpi_wakeup_code
acpi_wakeup_code:
        .incbin "arch/x86/kernel/acpi/realmode/wakeup.bin"
        .size   wakeup_code_start, .-wakeup_code_start

Any ideas?

- Sedat -
--
To unsubscribe from this list: send the line "unsubscribe linux-next" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Kernel]     [Linux USB Development]     [Yosemite News]     [Linux SCSI]

  Powered by Linux