From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "Rik van Riel" <riel@surriel.com>,
linux-kernel@vger.kernel.org, x86@kernel.org,
"Andy Lutomirski" <luto@kernel.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
kvm@vger.kernel.org, "Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: Re: [RFC PATCH 04/10] x86/fpu: eager switch PKRU state
Date: Wed, 19 Sep 2018 18:58:25 +0200 [thread overview]
Message-ID: <20180919165824.pedllijaci32gwd4@linutronix.de> (raw)
In-Reply-To: <7C1494C8-C6CA-4599-A6B3-0833F358E3A2@amacapital.net>
On 2018-09-12 08:49:01 [-0700], Andy Lutomirski wrote:
> Sure, but the first write is *before* this. So we can be preempted with the two copies of PKRU being out of sync.
so it took a while to understand this but now that I did, I will
consider this in the next version. Thank you.
Sebastian
next prev parent reply other threads:[~2018-09-19 16:58 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-12 13:33 [RFC PATCH] x86: load FPU registers on return to userland Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 01/10] x86/entry: remove _TIF_ALLWORK_MASK Sebastian Andrzej Siewior
2018-09-27 14:21 ` Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 02/10] kvm: x86: make kvm_{load|put}_guest_fpu() static Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 03/10] x86/fpu: add (__)make_fpregs_active helpers Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 04/10] x86/fpu: eager switch PKRU state Sebastian Andrzej Siewior
2018-09-12 14:18 ` Paolo Bonzini
2018-09-12 15:24 ` Andy Lutomirski
2018-09-12 15:30 ` Paolo Bonzini
2018-09-14 20:35 ` [RFC PATCH 04/10 v2 ] " Sebastian Andrzej Siewior
2018-09-17 8:37 ` Paolo Bonzini
2018-09-18 14:27 ` Sebastian Andrzej Siewior
2018-09-18 15:07 ` Paolo Bonzini
2018-09-18 15:11 ` Rik van Riel
2018-09-18 15:29 ` Paolo Bonzini
2018-09-18 16:04 ` Sebastian Andrzej Siewior
2018-09-18 17:29 ` Rik van Riel
2018-09-19 5:55 ` Paolo Bonzini
2018-09-19 16:57 ` Sebastian Andrzej Siewior
2018-09-19 17:00 ` Paolo Bonzini
2018-09-19 17:19 ` Sebastian Andrzej Siewior
2018-09-19 19:38 ` Rik van Riel
2018-09-19 19:49 ` Andy Lutomirski
2018-09-12 15:20 ` [RFC PATCH 04/10] " Andy Lutomirski
2018-09-12 15:30 ` Rik van Riel
2018-09-12 15:49 ` Andy Lutomirski
2018-09-19 16:58 ` Sebastian Andrzej Siewior [this message]
2018-09-12 13:33 ` [RFC PATCH 05/10] x86/pkeys: Drop the preempt-disable section Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 06/10] x86/fpu: Always store the registers in copy_fpstate_to_sigframe() Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 07/10] x86/entry: add TIF_LOAD_FPU Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 08/10] x86/fpu: prepare copy_fpstate_to_sigframe for TIF_LOAD_FPU Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 09/10] x86/fpu: copy non-resident FPU state at fork time Sebastian Andrzej Siewior
2018-09-12 13:33 ` [RFC PATCH 10/10] x86/fpu: defer FPU state load until return to userspace Sebastian Andrzej Siewior
2018-09-12 15:47 ` Andy Lutomirski
2018-09-19 17:05 ` Sebastian Andrzej Siewior
2018-09-21 3:45 ` Andy Lutomirski
2018-09-21 4:15 ` Andy Lutomirski
2018-09-26 11:12 ` Sebastian Andrzej Siewior
2018-09-26 14:34 ` Andy Lutomirski
2018-09-26 15:32 ` Sebastian Andrzej Siewior
2018-09-26 16:24 ` Andy Lutomirski
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