From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Borislav Petkov <bp@suse.de>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
Borislav Petkov <bp@alien8.de>,
linux-kernel@vger.kernel.org,
tip-bot2 for Masami Hiramatsu <tip-bot2@linutronix.de>,
linux-tip-commits@vger.kernel.org,
syzbot+9b64b619f10f19d19a7c@syzkaller.appspotmail.com,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
x86@kernel.org
Subject: Re: [tip: x86/urgent] x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes
Date: Wed, 9 Dec 2020 15:01:47 -0300 [thread overview]
Message-ID: <20201209180147.GD185686@kernel.org> (raw)
In-Reply-To: <20201206090250.GA10741@zn.tnic>
Em Sun, Dec 06, 2020 at 10:02:50AM +0100, Borislav Petkov escreveu:
> ( drop stable@ )
>
> On Sun, Dec 06, 2020 at 12:53:25PM +0900, Masami Hiramatsu wrote:
> > On Sat, 5 Dec 2020 11:17:04 +0100
> > Borislav Petkov <bp@alien8.de> wrote:
> >
> > > On Sat, Dec 05, 2020 at 09:12:56AM +0900, Masami Hiramatsu wrote:
> > > > This may break tools/objtool build. Please keep "inat.h".
> > >
> > > How? Please elaborate.
> > >
> > > Build tests are fine here.
> >
> > Oops, sorry, it was for perf build.
> >
> > Please refer commit 00a263902ac3 ("perf intel-pt: Use shared x86 insn decoder").
>
> Oh wow:
>
> "This way we continue to be able to process perf.data files with Intel PT
> traces in distros other than x86."
>
> acme, why is that? Can you explain pls?
>
> It probably would be better to fix this so that copying insn.h to keep
> it in sync won't cause any future breakages. Or the diffing check should
> verify whether header paths are wrong in the tools/ version and fail if
> so, so that we don't break it.
Trying to swap this back into my brain...
Humm, if I'm building this on, say, aarch64 then asm/ will not be
pointing to x86, right? Intel PT needs the x86 instruction decoder,
right?
I should've have wrote in the cset comment log if this was related to
cross build failures I encountered, can't remember now :-\
- Arnaldo
next prev parent reply other threads:[~2020-12-09 18:02 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-03 4:50 [PATCH v2 0/3] x86/insn: Fix not using prefixes.nbytes for loop over prefixes.bytes Masami Hiramatsu
2020-12-03 4:50 ` [PATCH v2 1/3] x86/uprobes: " Masami Hiramatsu
2020-12-03 12:37 ` Borislav Petkov
2020-12-03 12:41 ` Borislav Petkov
2020-12-03 12:48 ` Borislav Petkov
2020-12-03 16:45 ` Tom Lendacky
2020-12-03 16:54 ` Borislav Petkov
2020-12-03 17:01 ` Borislav Petkov
2020-12-03 18:10 ` Tom Lendacky
2020-12-03 18:17 ` Borislav Petkov
2020-12-03 18:49 ` Tom Lendacky
2020-12-04 0:56 ` Masami Hiramatsu
2020-12-04 3:55 ` Masami Hiramatsu
2020-12-04 11:06 ` Borislav Petkov
2020-12-04 11:28 ` Masami Hiramatsu
2020-12-04 0:16 ` Masami Hiramatsu
2020-12-04 0:18 ` Masami Hiramatsu
2020-12-04 15:04 ` [tip: x86/urgent] x86/uprobes: Do not use prefixes.nbytes when looping " tip-bot2 for Masami Hiramatsu
2020-12-05 0:12 ` Masami Hiramatsu
2020-12-05 10:17 ` Borislav Petkov
2020-12-06 3:53 ` Masami Hiramatsu
2020-12-06 9:02 ` Borislav Petkov
2020-12-09 18:01 ` Arnaldo Carvalho de Melo [this message]
2020-12-10 10:36 ` Borislav Petkov
2020-12-09 18:05 ` Arnaldo Carvalho de Melo
2020-12-06 9:09 ` tip-bot2 for Masami Hiramatsu
2020-12-03 4:50 ` [PATCH v2 2/3] x86/insn-eval: Fix not using prefixes.nbytes for loop " Masami Hiramatsu
2020-12-04 15:04 ` [tip: x86/urgent] x86/insn-eval: Use new for_each_insn_prefix() macro to loop over prefixes bytes tip-bot2 for Masami Hiramatsu
2020-12-06 9:09 ` tip-bot2 for Masami Hiramatsu
2020-12-03 4:51 ` [PATCH v2 3/3] x86/sev-es: Fix not using prefixes.nbytes for loop over prefixes.bytes Masami Hiramatsu
2020-12-04 15:04 ` [tip: x86/urgent] x86/sev-es: Use new for_each_insn_prefix() macro to loop over prefixes bytes tip-bot2 for Masami Hiramatsu
2020-12-06 9:09 ` tip-bot2 for Masami Hiramatsu
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