From: Dave Hansen <dave.hansen@intel.com>
To: Jiashuo Liang <liangjs@pku.edu.cn>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: arch_set_user_pkey_access only works on the current task_struct
Date: Mon, 7 Jun 2021 10:52:18 -0700 [thread overview]
Message-ID: <a9d538c4-b4aa-9a5b-5f8e-1a7baf8424b8@intel.com> (raw)
In-Reply-To: <b3762e3bc45d77869231271ffe0e259be118ad57.camel@pku.edu.cn>
On 6/5/21 6:10 AM, Jiashuo Liang wrote:
> I am learning the kernel implementation of the x86 PKU feature. I find the
> arch_set_user_pkey_access function in arch/x86/kernel/fpu/xstate.c does not
> use its first parameter. So it is perhaps a bug?
I wouldn't really call it a bug. But, yes, it is something we should
clean up.
next prev parent reply other threads:[~2021-06-07 17:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-05 13:10 Jiashuo Liang
2021-06-07 17:52 ` Dave Hansen [this message]
2021-06-08 3:16 ` liangjs
2021-06-08 14:55 ` Dave Hansen
2021-06-08 19:05 ` Thomas Gleixner
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