From: Borislav Petkov <bp@alien8.de>
To: David Woodhouse <dwmw@amazon.co.uk>
Cc: arjan@linux.intel.com, tglx@linutronix.de, karahmed@amazon.de,
x86@kernel.org, linux-kernel@vger.kernel.org,
tim.c.chen@linux.intel.com, peterz@infradead.org,
pbonzini@redhat.com, ak@linux.intel.com,
torvalds@linux-foundation.org, gregkh@linux-foundation.org
Subject: Re: [PATCH 1/4] x86/cpufeatures: Add Intel feature bits for Speculation Control
Date: Sat, 20 Jan 2018 21:29:17 +0100 [thread overview]
Message-ID: <20180120202917.wl3ifriy2iyfti4u@pd.tnic> (raw)
In-Reply-To: <1516449813-7654-2-git-send-email-dwmw@amazon.co.uk>
On Sat, Jan 20, 2018 at 12:03:30PM +0000, David Woodhouse wrote:
> Add three feature bits exposed by new microcode on Intel CPUs for
> speculation control. We would now be up to five bits in CPUID(7).RDX
> so take them out of the 'scattered' features and make a proper word
> for them instead.
... as that leaf is a pure feature bits leaf.
>
> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
> ---
> arch/x86/include/asm/cpufeature.h | 7 +++++--
> arch/x86/include/asm/cpufeatures.h | 12 +++++++++---
> arch/x86/include/asm/disabled-features.h | 3 ++-
> arch/x86/include/asm/required-features.h | 3 ++-
> arch/x86/kernel/cpu/common.c | 1 +
> arch/x86/kernel/cpu/scattered.c | 2 --
> 6 files changed, 19 insertions(+), 9 deletions(-)
Reviewed-by: Borislav Petkov <bp@suse.de>
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2018-01-20 20:29 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-20 12:03 [PATCH 0/4] Basic Speculation Control feature support David Woodhouse
2018-01-20 12:03 ` [PATCH 1/4] x86/cpufeatures: Add Intel feature bits for Speculation Control David Woodhouse
2018-01-20 20:29 ` Borislav Petkov [this message]
2018-01-20 21:51 ` Steven Noonan
2018-01-20 21:57 ` David Woodhouse
2018-01-20 12:03 ` [PATCH 2/4] x86/cpufeatures: Add AMD feature bits for Prediction Command David Woodhouse
2018-01-21 12:16 ` Borislav Petkov
2018-01-21 12:22 ` David Woodhouse
2018-01-21 12:34 ` Borislav Petkov
2018-01-21 12:41 ` David Woodhouse
2018-01-21 17:36 ` Tom Lendacky
2018-01-21 17:51 ` Borislav Petkov
2018-01-20 12:03 ` [PATCH 3/4] x86/msr: Add definitions for new speculation control MSRs David Woodhouse
2018-01-20 12:03 ` [PATCH 4/4] x86/pti: Do not enable PTI on fixed Intel processors David Woodhouse
2018-01-20 20:08 ` Thomas Gleixner
2018-01-20 20:13 ` Thomas Gleixner
2018-01-20 20:13 ` Woodhouse, David
2018-01-20 20:13 ` Woodhouse, David
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