From: Thomas Gleixner <tglx@linutronix.de>
To: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
tim.c.chen@linux.intel.com, gregkh@linux-foundation.org,
hpa@zytor.com, mingo@kernel.org, dwmw@amazon.co.uk,
luto@amacapital.net, riel@redhat.com, dave.hansen@intel.com,
keescook@google.com, ak@linux.intel.com, pjt@google.com,
torvalds@linux-foundation.org, jikos@kernel.org,
linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/pti] x86/spectre: Add boot time option to select Spectre v2 mitigation
Date: Wed, 10 Jan 2018 19:06:27 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1801101906080.1919@nanos> (raw)
In-Reply-To: <7689f631-7179-79f4-111b-418214432cc7@amd.com>
On Wed, 10 Jan 2018, Tom Lendacky wrote:
> > +retpoline_auto:
> > + if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
>
> Not specifying anything on the command line will get SPECTRE_V2_CMD_AUTO,
> so boot_cpu_has(X86_FEATURE_LFENCE_RDTSC) needs to be checked since it
> won't have been checked previously.
Dammit.
next prev parent reply other threads:[~2018-01-10 18:07 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-09 14:43 [PATCH v7 00/11] Retpoline: Avoid speculative indirect calls in kernel David Woodhouse
2018-01-09 14:43 ` [PATCH v7 01/11] x86/retpoline: Add initial retpoline support David Woodhouse
2018-01-09 15:55 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 17:34 ` tip-bot for David Woodhouse
2018-01-10 18:13 ` tip-bot for David Woodhouse
2018-01-10 18:40 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 02/11] x86/retpoline: Temporarily disable objtool when CONFIG_RETPOLINE=y David Woodhouse
2018-01-09 15:56 ` [tip:x86/pti] " tip-bot for Andi Kleen
2018-01-10 5:58 ` [PATCH v7 02/11] " Josh Poimboeuf
2018-01-10 10:12 ` Peter Zijlstra
2018-01-10 17:34 ` [tip:x86/pti] " tip-bot for Andi Kleen
2018-01-10 18:13 ` tip-bot for Andi Kleen
2018-01-10 18:40 ` tip-bot for Andi Kleen
2018-01-09 14:43 ` [PATCH v7 03/11] x86/spectre: Add boot time option to select Spectre v2 mitigation David Woodhouse
2018-01-09 15:56 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 17:35 ` tip-bot for David Woodhouse
2018-01-10 18:03 ` Tom Lendacky
2018-01-10 18:06 ` Thomas Gleixner [this message]
2018-01-10 18:10 ` Thomas Gleixner
2018-01-10 18:14 ` tip-bot for David Woodhouse
2018-01-10 18:33 ` Tom Lendacky
2018-01-10 18:35 ` Thomas Gleixner
2018-01-10 18:41 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 04/11] x86/retpoline/crypto: Convert crypto assembler indirect jumps David Woodhouse
2018-01-09 15:56 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 17:35 ` tip-bot for David Woodhouse
2018-01-10 18:14 ` tip-bot for David Woodhouse
2018-01-10 18:41 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 05/11] x86/retpoline/entry: Convert entry " David Woodhouse
2018-01-09 15:57 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 3:54 ` [v7, 05/11] " Andrei Vagin
2018-01-10 4:30 ` Andi Kleen
2018-01-10 4:39 ` Dave Hansen
2018-01-10 5:23 ` Andrei Vagin
2018-01-10 17:36 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 18:15 ` tip-bot for David Woodhouse
2018-01-10 18:41 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 06/11] x86/retpoline/ftrace: Convert ftrace " David Woodhouse
2018-01-09 15:57 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 17:36 ` tip-bot for David Woodhouse
2018-01-10 18:15 ` tip-bot for David Woodhouse
2018-01-10 18:42 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 07/11] x86/retpoline/hyperv: Convert " David Woodhouse
2018-01-09 15:58 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 17:37 ` tip-bot for David Woodhouse
2018-01-10 18:15 ` tip-bot for David Woodhouse
2018-01-10 18:42 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 08/11] x86/retpoline/xen: Convert Xen hypercall " David Woodhouse
2018-01-09 15:58 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 17:37 ` tip-bot for David Woodhouse
2018-01-10 18:16 ` tip-bot for David Woodhouse
2018-01-10 18:43 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 09/11] x86/retpoline/checksum32: Convert assembler " David Woodhouse
2018-01-09 15:58 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-10 17:37 ` tip-bot for David Woodhouse
2018-01-10 18:16 ` tip-bot for David Woodhouse
2018-01-10 18:43 ` tip-bot for David Woodhouse
2018-01-09 14:43 ` [PATCH v7 10/11] x86/retpoline/irq32: " David Woodhouse
2018-01-09 15:59 ` [tip:x86/pti] " tip-bot for Andi Kleen
2018-01-10 17:38 ` tip-bot for Andi Kleen
2018-01-10 18:17 ` tip-bot for Andi Kleen
2018-01-10 18:43 ` tip-bot for Andi Kleen
2018-01-09 14:43 ` [PATCH v7 11/11] x86/retpoline: Avoid return buffer underflows on context switch David Woodhouse
2018-01-09 15:59 ` [tip:x86/pti] " tip-bot for Andi Kleen
2018-01-11 21:46 [PATCH v8 04/12] x86/spectre: Add boot time option to select Spectre v2 mitigation David Woodhouse
2018-01-11 23:23 ` [tip:x86/pti] " tip-bot for David Woodhouse
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=alpine.DEB.2.20.1801101906080.1919@nanos \
--to=tglx@linutronix.de \
--cc=ak@linux.intel.com \
--cc=dave.hansen@intel.com \
--cc=dwmw@amazon.co.uk \
--cc=gregkh@linux-foundation.org \
--cc=hpa@zytor.com \
--cc=jikos@kernel.org \
--cc=keescook@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=luto@amacapital.net \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=pjt@google.com \
--cc=riel@redhat.com \
--cc=thomas.lendacky@amd.com \
--cc=tim.c.chen@linux.intel.com \
--cc=torvalds@linux-foundation.org \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).