From: Fangfei Yang <yangff1@gmail.com>
To: luto@kernel.org
Cc: dave.hansen@intel.com, dave.hansen@linux.intel.com,
keescook@chromium.org, linux-kernel@vger.kernel.org,
sroettger@google.com, x86@kernel.org
Subject: Re: PKU usage improvements for threads
Date: Fri, 2 Sep 2022 19:16:48 -0500 [thread overview]
Message-ID: <20220903001648.17171-1-yangff1@gmail.com> (raw)
In-Reply-To: <26078f2a-67be-4aa1-bbb2-dcd1168c9d12@www.fastmail.com>
> sys_sigaltstack() is already pretty much useless with SHSTK, and it’s kinda busted with AVX512. How about we just add a whole new non-kludgy API?
Hi, why is that useless? Signal is not going to change the SSP, all it needs to do is creating a token that can be restored by sigreturn in the future on the current shadow stack.
Can you provide some examples about that? Thank you.
next prev parent reply other threads:[~2022-09-03 0:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-22 20:40 PKU usage improvements for threads Kees Cook
2022-08-22 21:11 ` Dave Hansen
2022-08-23 11:08 ` Stephen Röttger
2022-08-23 18:12 ` Dave Hansen
2022-08-23 18:24 ` Andy Lutomirski
2022-08-24 8:51 ` Stephen Röttger
2022-08-24 16:28 ` Dave Hansen
2022-08-24 16:45 ` Andy Lutomirski
2022-08-25 12:30 ` Stephen Röttger
2022-08-25 14:36 ` Dave Hansen
2022-09-02 17:18 ` Andy Lutomirski
2022-09-03 0:16 ` Fangfei Yang [this message]
2022-09-03 0:14 ` Fangfei Yang
2022-09-06 4:34 ` Andy Lutomirski
2022-09-06 5:58 ` Fangfei Yang
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