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Groups > linux.kernel > #1606263
| From | Jiri Slaby <jslaby@suse.cz> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data |
| Date | 2017-03-22 08:50 +0100 |
| Message-ID | <tnJbP-7m2-1@gated-at.bofh.it> (permalink) |
| References | <tlyNB-3TH-33@gated-at.bofh.it> <tn4Ln-4J7-5@gated-at.bofh.it> <tn4Lp-4J7-47@gated-at.bofh.it> <tnsNI-4r2-11@gated-at.bofh.it> <tnISt-7c5-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 03/22/2017, 08:25 AM, Ingo Molnar wrote: > > * Pavel Machek <pavel@ucw.cz> wrote: > >> Hi! >> >>> -ENTRY(saved_rbp) .quad 0 >>> -ENTRY(saved_rsi) .quad 0 >>> -ENTRY(saved_rdi) .quad 0 >>> -ENTRY(saved_rbx) .quad 0 >>> +SYM_DATA_START(saved_rbp) .quad 0 >>> +SYM_DATA_START(saved_rsi) .quad 0 >>> +SYM_DATA_START(saved_rdi) .quad 0 >>> +SYM_DATA_START(saved_rbx) .quad 0 >> >> Does it make sense to call it SYM_DATA_*START* when there's no >> corresponding end? > > That looks like a bug - I think we should strive for them to always be in pairs. > > Jiri, Josh, could objtool help here perhaps, to detect 'non-terminated' > SYM_*_START() uses? This could be done by emitting debug data into a special > section and then analyzing that section for unpaired entries. The section can be > discarded in the final link, it won't show up in the kernel image. It should be easier than that. No introduction of other info needed -- every global symbol without a ".type" or ".size" (i.e. SYM_*_END) should be a bug now. > We don't ever nest symbols, right? AFAI could see so far, correct. >> Plus... it looks like saved_rsi (and friends) are only used inside >> wakeup_64.S. Could we just delete the "ENTRY" annotations? > > That appears to make sense as well. +1, will fix this. thanks, -- js suse labs
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Re: [RFC] linkage: new macros for functions and data Ingo Molnar <mingo@kernel.org> - 2017-03-16 09:10 +0100
Re: [RFC] linkage: new macros for functions and data Jiri Slaby <jslaby@suse.cz> - 2017-03-16 09:20 +0100
[PATCH v2 07/10] x86: assembly, annotate aliases Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
[PATCH v2 04/10] x86: boot, annotate functions properly Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
[PATCH v2 09/10] x86: entry, annotate interrupt symbols properly Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
[PATCH v2 03/10] x86: assembly, use SYM_FUNC_END for functions Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
Re: [PATCH v2 03/10] x86: assembly, use SYM_FUNC_END for functions Josh Poimboeuf <jpoimboe@redhat.com> - 2017-03-21 15:50 +0100
Re: [PATCH v2 03/10] x86: assembly, use SYM_FUNC_END for functions Ingo Molnar <mingo@kernel.org> - 2017-03-22 08:40 +0100
Re: [PATCH v2 03/10] x86: assembly, use SYM_FUNC_END for functions Josh Poimboeuf <jpoimboe@redhat.com> - 2017-03-22 15:30 +0100
Re: [PATCH v2 03/10] x86: assembly, use SYM_FUNC_END for functions Jiri Slaby <jslaby@suse.cz> - 2017-03-22 17:00 +0100
[PATCH v2 05/10] x86: kernel+lib, annotate local functions Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
[PATCH v2 08/10] x86: entry, annotate THUNKs Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
[PATCH v2 06/10] x86: crypto, annotate local functions Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
[PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Josh Poimboeuf <jpoimboe@redhat.com> - 2017-03-20 14:40 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Jiri Slaby <jslaby@suse.cz> - 2017-03-20 16:50 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Josh Poimboeuf <jpoimboe@redhat.com> - 2017-03-20 17:10 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Pavel Machek <pavel@ucw.cz> - 2017-03-21 15:20 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Ingo Molnar <mingo@kernel.org> - 2017-03-22 08:30 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Jiri Slaby <jslaby@suse.cz> - 2017-03-22 08:50 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Ingo Molnar <mingo@kernel.org> - 2017-03-22 08:50 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Josh Poimboeuf <jpoimboe@redhat.com> - 2017-03-22 15:20 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Jiri Slaby <jslaby@suse.cz> - 2017-03-22 16:10 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Josh Poimboeuf <jpoimboe@redhat.com> - 2017-03-22 16:40 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Ingo Molnar <mingo@kernel.org> - 2017-03-23 08:40 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Josh Poimboeuf <jpoimboe@redhat.com> - 2017-03-23 14:30 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Jiri Slaby <jslaby@suse.cz> - 2017-03-22 13:10 +0100
Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Pavel Machek <pavel@ucw.cz> - 2017-03-22 17:00 +0100
[RFC v2 10/10] x86: boot, extract efi_pe_entry from startup_64 Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
[PATCH v2 01/10] linkage: new macros for assembler symbols Jiri Slaby <jslaby@suse.cz> - 2017-03-20 13:40 +0100
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