From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Ingo Molnar <mingo@kernel.org>,
Matt Fleming <matt@codeblueprint.co.uk>,
Stephen Smalley <sds@tycho.nsa.gov>, X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Kees Cook <keescook@chromium.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andy Lutomirski <luto@kernel.org>,
Denys Vlasenko <dvlasenk@redhat.com>,
Brian Gerst <brgerst@gmail.com>,
"linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: Re: [PATCH v2] x86/mm: warn on W+x mappings
Date: Wed, 14 Oct 2015 17:35:22 +0200 [thread overview]
Message-ID: <20151014153522.GC8218@pd.tnic> (raw)
In-Reply-To: <CALCETrU-_dJ3=+1nHN82mE==YpXGB8USWdrXDc=BVk_J5UdN3A@mail.gmail.com>
On Wed, Oct 14, 2015 at 08:30:48AM -0700, Andy Lutomirski wrote:
> Can we just unmap these things until someone tries to do an EFI call,
> and then unmap them again after the call returns? We already switch
> pgds for EFI IIRC.
hpa did mention an EFI-aware page fault handler at the time. I guess we
could do that too...
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2015-10-14 15:35 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-02 19:29 [PATCH v2] x86/mm: warn on W+x mappings Stephen Smalley
2015-10-02 20:44 ` Kees Cook
2015-10-03 11:27 ` Ingo Molnar
2015-10-05 19:13 ` Stephen Smalley
2015-10-06 7:32 ` Ingo Molnar
2015-10-06 15:37 ` Stephen Smalley
2015-10-12 11:36 ` Borislav Petkov
[not found] ` <20151012113605.GB7384-fF5Pk5pvG8Y@public.gmane.org>
2015-10-12 12:41 ` Matt Fleming
2015-10-12 12:41 ` Matt Fleming
2015-10-12 12:49 ` Ingo Molnar
[not found] ` <20151012124936.GA6260-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-10-12 12:55 ` Matt Fleming
2015-10-12 12:55 ` Matt Fleming
[not found] ` <20151012125548.GE2579-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2015-10-12 14:17 ` Ingo Molnar
2015-10-12 14:17 ` Ingo Molnar
[not found] ` <20151012141754.GA6621-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-10-12 14:49 ` Matt Fleming
2015-10-12 14:49 ` Matt Fleming
[not found] ` <20151012144928.GF2579-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2015-10-12 15:34 ` Ard Biesheuvel
2015-10-12 15:34 ` Ard Biesheuvel
[not found] ` <CAKv+Gu95NoB5cPqZMeBLn7i0JWDDPKX63FuiMVD94HpbGhKrhA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-10-12 15:50 ` Matt Fleming
2015-10-12 15:50 ` Matt Fleming
[not found] ` <20151012155028.GH2579-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2015-10-12 16:43 ` Ard Biesheuvel
2015-10-12 16:43 ` Ard Biesheuvel
2015-10-14 15:18 ` Ingo Molnar
2015-10-14 15:30 ` Andy Lutomirski
2015-10-14 15:35 ` Borislav Petkov [this message]
[not found] ` <20151014153522.GC8218-fF5Pk5pvG8Y@public.gmane.org>
2015-10-15 10:10 ` Matt Fleming
2015-10-15 10:10 ` Matt Fleming
[not found] ` <20151015101016.GB2975-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2015-10-15 10:33 ` Borislav Petkov
2015-10-15 10:33 ` Borislav Petkov
2015-10-16 1:45 ` Ricardo Neri
2015-10-16 1:45 ` Ricardo Neri
2015-10-14 21:02 ` Matt Fleming
2015-10-21 9:42 ` Ingo Molnar
[not found] ` <20151021094242.GA12155-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-10-21 12:49 ` Ingo Molnar
2015-10-21 12:49 ` Ingo Molnar
[not found] ` <20151021124924.GA19262-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2015-10-21 12:57 ` Ard Biesheuvel
2015-10-21 12:57 ` Ard Biesheuvel
2015-10-21 13:24 ` Borislav Petkov
[not found] ` <20151021132430.GD3575-fF5Pk5pvG8Y@public.gmane.org>
2015-10-21 13:28 ` Ard Biesheuvel
2015-10-21 13:28 ` Ard Biesheuvel
2015-10-21 14:36 ` Borislav Petkov
[not found] ` <20151021143651.GE3575-fF5Pk5pvG8Y@public.gmane.org>
2015-10-21 18:46 ` Andy Lutomirski
2015-10-21 18:46 ` Andy Lutomirski
[not found] ` <CALCETrWwHLnt6=MiyuQY48zEaOUMuFTg1oN3NDdEOxa6XYMgCw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-10-21 20:45 ` Matt Fleming
2015-10-21 20:45 ` Matt Fleming
[not found] ` <20151021204522.GB20338-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2015-10-21 20:49 ` Andy Lutomirski
2015-10-21 20:49 ` Andy Lutomirski
2015-10-21 20:38 ` Matt Fleming
2015-10-21 20:38 ` Matt Fleming
2015-10-12 14:56 ` Josh Triplett
2015-10-14 15:19 ` Ingo Molnar
2015-10-14 16:47 ` Josh Triplett
2015-10-21 9:43 ` Ingo Molnar
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