From: Borislav Petkov <bp@alien8.de>
To: Matt Fleming <matt@codeblueprint.co.uk>,
Andy Lutomirski <luto@amacapital.net>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
"Ravi V. Shankar" <ravi.v.shankar@intel.com>,
Toshi Kani <toshi.kani@hp.com>, Brian Gerst <brgerst@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Luis Rodriguez <mcgrof@suse.com>,
Andrew Morton <akpm@linux-foundation.org>,
Denys Vlasenko <dvlasenk@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
ricardo.neri@intel.com, Hugh Dickins <hughd@google.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: Re: [tip:efi/core] x86/mm/pat: Use _PAGE_GLOBAL bit for EFI page table mappings
Date: Wed, 24 Feb 2016 17:41:39 +0100 [thread overview]
Message-ID: <20160224164139.GF3888@pd.tnic> (raw)
In-Reply-To: <20160224162002.GE3888@pd.tnic>
On Wed, Feb 24, 2016 at 05:20:02PM +0100, Borislav Petkov wrote:
> That's mixed mode. I think you mean the FLUSH_TLB_ALL in efi_call.
> That's EFI on 64-bit but that is mandated by the spec, AFAIR.
Ok, so mfleming set me straight on IRC - that's tip/master I should be
staring at.
In any case, I think we should do __flush_tlb_all() in efi_call_cirt()
just in case, for the simple reason that EFI could be installing some
funky TLB entries which we don't want. I'm not saying it does and it
probably won't but what's stopping it?
Or am I being overly paranoid?
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2016-02-24 16:41 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-17 12:35 [GIT PULL 00/13] EFI changes for v4.6 part 2 Matt Fleming
2016-02-17 12:35 ` Matt Fleming
[not found] ` <1455712566-16727-1-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2016-02-17 12:35 ` [PATCH 01/13] efi: Reformat GUID tables to follow the format in UEFI spec Matt Fleming
2016-02-17 12:35 ` Matt Fleming
2016-02-22 12:12 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgUGV0ZXIgSm9uZXMgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:35 ` [PATCH 02/13] efi/runtime-wrappers: Run UEFI Runtime Services with interrupts enabled Matt Fleming
2016-02-17 12:35 ` Matt Fleming
2016-02-22 12:13 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:35 ` [PATCH 05/13] arm64: vmlinux.lds.S: Handle .init.rodata.xxx and .init.bss sections Matt Fleming
2016-02-17 12:35 ` Matt Fleming
2016-02-22 12:14 ` [tip:efi/core] arm64/vmlinux.lds.S: " =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:36 ` [PATCH 13/13] x86/efi: Only map kernel text for EFI mixed mode Matt Fleming
2016-02-17 12:36 ` Matt Fleming
2016-02-22 12:17 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgU2FpIFByYW5lZXRoIDx0aXBib3RAenl0b3IuY29tPg==?=
2016-02-17 12:35 ` [PATCH 03/13] x86/mm/pageattr: Use _PAGE_GLOBAL bit for EFI page table mappings Matt Fleming
2016-02-22 12:13 ` [tip:efi/core] x86/mm/pat: " =?UTF-8?B?dGlwLWJvdCBmb3IgU2FpIFByYW5lZXRoIDx0aXBib3RAenl0b3IuY29tPg==?=
2016-02-23 17:47 ` Andy Lutomirski
2016-02-23 18:08 ` Linus Torvalds
2016-02-23 18:12 ` Borislav Petkov
2016-02-24 2:09 ` H. Peter Anvin
2016-02-24 2:13 ` H. Peter Anvin
2016-02-25 8:59 ` Ingo Molnar
2016-02-24 0:50 ` Sai Praneeth Prakhya
2016-02-24 2:43 ` Andy Lutomirski
2016-02-24 14:10 ` Matt Fleming
2016-02-24 16:20 ` Borislav Petkov
2016-02-24 16:36 ` Andy Lutomirski
2016-02-24 18:56 ` Linus Torvalds
2016-02-24 19:45 ` Matt Fleming
2016-02-24 19:50 ` Andy Lutomirski
2016-02-29 10:56 ` Sylvain Chouleur
2016-03-02 11:20 ` Matt Fleming
2016-02-24 19:33 ` Matt Fleming
2016-02-24 19:49 ` Andy Lutomirski
2016-02-25 9:06 ` Ingo Molnar
2016-02-25 15:27 ` Matt Fleming
2016-02-24 16:41 ` Borislav Petkov [this message]
2016-02-24 16:47 ` Andy Lutomirski
2016-02-24 16:39 ` Andy Lutomirski
2016-02-25 16:00 ` Matt Fleming
2016-02-17 12:35 ` [PATCH 04/13] efi/arm64: Drop __init annotation from handle_kernel_image() Matt Fleming
2016-02-22 12:14 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:35 ` [PATCH 06/13] efi/efistub: Prevent __init annotations from being used Matt Fleming
2016-02-22 12:14 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:36 ` [PATCH 07/13] efi/arm-init: Use read-only early mappings Matt Fleming
2016-02-22 12:15 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:36 ` [PATCH 08/13] efi/arm: Check for LPAE support before booting a LPAE kernel Matt Fleming
2016-02-22 12:15 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:36 ` [PATCH 09/13] efi/arm64: Check for h/w support before booting a >4 KB granule kernel Matt Fleming
2016-02-22 12:16 ` [tip:efi/core] efi/arm64: Check for h/w support before booting a >4 KB granular kernel =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
[not found] ` <1455712566-16727-10-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2016-03-06 3:35 ` [PATCH 09/13] efi/arm64: Check for h/w support before booting a >4 KB granule kernel Ard Biesheuvel
2016-03-06 3:35 ` Ard Biesheuvel
[not found] ` <CAKv+Gu-ZHz9Z6YyusLZdKJA4QPJ8fkxVWaA=EQvTM5iSLM7c1Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-03-07 11:02 ` Matt Fleming
2016-03-07 11:02 ` Matt Fleming
[not found] ` <20160307110243.GB27675-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org>
2016-03-07 11:05 ` Ard Biesheuvel
2016-03-07 11:05 ` Ard Biesheuvel
2016-02-17 12:36 ` [PATCH 10/13] efi/arm*: Perform hardware compatibility check Matt Fleming
2016-02-22 12:16 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgQXJkIEJpZXNoZXV2ZWwgPHRpcGJvdEB6eXRvci5jb20+?=
2016-02-17 12:36 ` [PATCH 11/13] x86/mm/pageattr: Don't implicitly allow _PAGE_RW in kernel_map_pages_in_pgd() Matt Fleming
2016-02-22 12:16 ` [tip:efi/core] x86/mm/pat: " =?UTF-8?B?dGlwLWJvdCBmb3IgU2FpIFByYW5lZXRoIDx0aXBib3RAenl0b3IuY29tPg==?=
2016-02-17 12:36 ` [PATCH 12/13] x86/efi: Map EFI_MEMORY_{XP,RO} memory region bits to EFI page tables Matt Fleming
2016-02-22 12:17 ` [tip:efi/core] " =?UTF-8?B?dGlwLWJvdCBmb3IgU2FpIFByYW5lZXRoIDx0aXBib3RAenl0b3IuY29tPg==?=
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160224164139.GF3888@pd.tnic \
--to=bp@alien8.de \
--cc=akpm@linux-foundation.org \
--cc=ard.biesheuvel@linaro.org \
--cc=brgerst@gmail.com \
--cc=dvlasenk@redhat.com \
--cc=hpa@zytor.com \
--cc=hughd@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=matt@codeblueprint.co.uk \
--cc=mcgrof@suse.com \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=ravi.v.shankar@intel.com \
--cc=ricardo.neri@intel.com \
--cc=sai.praneeth.prakhya@intel.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=toshi.kani@hp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.