linux-kernel - Re: [PATCH v2 1/8] x86/feature: Detect the x86 IBRS feature to control Speculation

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Message-ID: <99c7f6fe-9863-fedf-b57c-9f066a4fbb1a@linux.intel.com>
Date:   Tue, 9 Jan 2018 14:59:54 -0800
From:   Tim Chen <tim.c.chen@...ux.intel.com>
To:     Paolo Bonzini <pbonzini@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg KH <gregkh@...uxfoundation.org>
Cc:     Dave Hansen <dave.hansen@...el.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Arjan Van De Ven <arjan.van.de.ven@...el.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
        Ashok Raj <ashok.raj@...el.com>
Subject: Re: [PATCH v2 1/8] x86/feature: Detect the x86 IBRS feature to
 control Speculation

On 01/09/2018 09:58 AM, Paolo Bonzini wrote:
> On 09/01/2018 18:53, Tim Chen wrote:
>> On 01/09/2018 02:39 AM, Paolo Bonzini wrote:
>>
>>> +
>>> +#define MSR_IA32_SPEC_CTRL		0x00000048
>>> +#define SPEC_CTRL_FEATURE_DISABLE_IBRS	(0 << 0)
>>> +#define SPEC_CTRL_FEATURE_ENABLE_IBRS	(1 << 0)
>>
>>
>> Boris requested that the name for ENABLE/DISABLE to be shortened to
>> SPEC_CTRL_{ENABLE,DISABLE}_IBRS.  I'm planning to do that
>> for the next patchset update.
> 
> Were you also planning to include KVM patches in your patchset sooner or
> later?  Or would that be a separate submission?

Ashok Raj will be sending out the KVM related patches in a short
while after I updated my patchset.

Tim