linux-kernel - Re: [PATCH v2] x86/fpu: Disable BH while while loading FPU registers in __fpu__restore

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 19 Nov 2018 18:41:38 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     Dave Hansen <dave.hansen@...el.com>, x86@...nel.org,
        Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
        Andy Lutomirski <luto@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        kvm@...r.kernel.org, "Jason A. Donenfeld" <Jason@...c4.com>,
        Rik van Riel <riel@...riel.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH v2] x86/fpu: Disable BH while while loading FPU registers
 in __fpu__restore_sig()

On Mon, Nov 19, 2018 at 06:31:36PM +0100, Sebastian Andrzej Siewior wrote:
> I though about __fpregs_changes_begin() in the last patch of the commit:
>  https://git.kernel.org/pub/scm/linux/kernel/git/bigeasy/staging.git/commit/?h=x86_fpu_rtu_v4

Also a good spot - api.h talks about preemption already so sure, why not.

Thx.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.