Messages in this thread | | | Date | Thu, 11 Jun 2015 08:13:28 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH v5 07/10] x86/asm/acpi: Fix asmvalidate warnings for wakeup_64.S |
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* Josh Poimboeuf <jpoimboe@redhat.com> wrote:
> On Wed, Jun 10, 2015 at 03:21:35PM +0200, Pavel Machek wrote: > > On Wed 2015-06-10 07:06:15, Josh Poimboeuf wrote: > > > Fix the following asmvalidate warnings: > > > > > > asmvalidate: arch/x86/kernel/acpi/wakeup_64.o: wakeup_long64()+0x15: unsupported jump to outside of function > > > asmvalidate: arch/x86/kernel/acpi/wakeup_64.o: wakeup_long64()+0x55: unsupported jump to outside of function > > > asmvalidate: arch/x86/kernel/acpi/wakeup_64.o: wakeup_long64(): unsupported fallthrough at end of function > > > asmvalidate: arch/x86/kernel/acpi/wakeup_64.o: do_suspend_lowlevel()+0x9a: unsupported jump to outside of function > > > asmvalidate: arch/x86/kernel/acpi/wakeup_64.o: do_suspend_lowlevel()+0x116: unsupported jump to outside of function > > > asmvalidate: arch/x86/kernel/acpi/wakeup_64.o: do_suspend_lowlevel(): unsupported fallthrough at end of function > > > asmvalidate: arch/x86/kernel/acpi/wakeup_64.o: do_suspend_lowlevel(): missing FP_SAVE/RESTORE macros > > > > > > > Actually first things first. Purpose of warnings is to pinpoint > > errors. Do you believe there are some errors in wakeup_64.S? > > The "errors" are that it doesn't conform with the guidelines outlined in > the cover letter. Specifically, wakeup_long64() is improperly > annotated, and do_suspend_lowlevel() doesn't honor CONFIG_FRAME_POINTER.
Please create a file for this in Documentation/x86/, outlining the common cases of such .S debug info problems and the effects this has on the stack backtrace output.
Thanks,
Ingo
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