From: "Bae, Chang Seok" <chang.seok.bae@intel.com>
To: Borislav Petkov <bp@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, Andy Lutomirski <luto@kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
"Brown, Len" <len.brown@intel.com>,
"Hansen, Dave" <dave.hansen@intel.com>,
"H.J. Lu" <hjl.tools@gmail.com>,
Dave Martin <Dave.Martin@arm.com>, Jann Horn <jannh@google.com>,
Michael Ellerman <mpe@ellerman.id.au>,
"carlos@redhat.com" <carlos@redhat.com>,
"Luck, Tony" <tony.luck@intel.com>,
"Shankar, Ravi V" <ravi.v.shankar@intel.com>,
"libc-alpha@sourceware.org" <libc-alpha@sourceware.org>,
linux-arch <linux-arch@vger.kernel.org>,
Linux API <linux-api@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v6 1/6] uapi: Define the aux vector AT_MINSIGSTKSZ
Date: Wed, 10 Mar 2021 16:31:07 +0000 [thread overview]
Message-ID: <96967F18-2856-46AE-A2AB-A36BBBCD999C@intel.com> (raw)
In-Reply-To: <20210301190909.GF32622@zn.tnic>
On Mar 1, 2021, at 11:09, Borislav Petkov <bp@suse.de> wrote:
> On Sat, Feb 27, 2021 at 08:59:06AM -0800, Chang S. Bae wrote:
>>
>> diff --git a/include/uapi/linux/auxvec.h b/include/uapi/linux/auxvec.h
>> index abe5f2b6581b..15be98c75174 100644
>> --- a/include/uapi/linux/auxvec.h
>> +++ b/include/uapi/linux/auxvec.h
>> @@ -33,5 +33,8 @@
>>
>> #define AT_EXECFN 31 /* filename of program */
>>
>> +#ifndef AT_MINSIGSTKSZ
>> +#define AT_MINSIGSTKSZ 51 /* stack needed for signal delivery */
>
> I know glibc's comment says a similar thing but the correct thing to say
> here should be "minimal stack size for signal delivery" or so. Even the
> variable name alludes to that too.
Yeah, you’re right.
Thanks,
Chang
next prev parent reply other threads:[~2021-03-10 16:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-27 16:59 [PATCH v6 0/6] x86: Improve Minimum Alternate Stack Size Chang S. Bae
2021-02-27 16:59 ` [PATCH v6 1/6] uapi: Define the aux vector AT_MINSIGSTKSZ Chang S. Bae
2021-03-01 19:09 ` Borislav Petkov
2021-03-10 16:31 ` Bae, Chang Seok [this message]
2021-02-27 16:59 ` [PATCH v6 2/6] x86/signal: Introduce helpers to get the maximum signal frame size Chang S. Bae
2021-02-27 16:59 ` [PATCH v6 3/6] x86/elf: Support a new ELF aux vector AT_MINSIGSTKSZ Chang S. Bae
2021-03-05 10:43 ` Borislav Petkov
2021-03-10 16:34 ` Bae, Chang Seok
2021-03-10 17:43 ` Borislav Petkov
2021-03-10 18:01 ` Bae, Chang Seok
2021-02-27 16:59 ` [PATCH v6 4/6] selftest/sigaltstack: Use the AT_MINSIGSTKSZ aux vector if available Chang S. Bae
2021-02-27 16:59 ` [PATCH v6 5/6] x86/signal: Detect and prevent an alternate signal stack overflow Chang S. Bae
2021-02-27 16:59 ` [PATCH v6 6/6] selftest/x86/signal: Include test cases for validating sigaltstack Chang S. Bae
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