linux-kernel - Re: [PATCH 1/2] x86/mm/iommu/sva: Fix error code for LAM enabling failure due to SVA

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Message-ID: <20230406155948.hlhb53xb3plq6sh5@box>
Date:   Thu, 6 Apr 2023 18:59:48 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
        Kostya Serebryany <kcc@...gle.com>,
        Andrey Ryabinin <ryabinin.a.a@...il.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Alexander Potapenko <glider@...gle.com>,
        Taras Madan <tarasmadan@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        "H . J . Lu" <hjl.tools@...il.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        Bharata B Rao <bharata@....com>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] x86/mm/iommu/sva: Fix error code for LAM enabling
 failure due to SVA

On Thu, Apr 06, 2023 at 08:31:40AM -0700, Dave Hansen wrote:
> On 4/3/23 04:10, Kirill A. Shutemov wrote:
> > Normally, LAM and SVA are mutually exclusive. LAM enabling will fail if
> > SVA is already in use.
> > 
> > Correct error code for the failure. EINTR is nonsensical there.
> > 
> > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> > Fixes: 23e5d9ec2bab ("x86/mm/iommu/sva: Make LAM and SVA mutually exclusive")
> > Reported-by: Dmitry Vyukov <dvyukov@...gle.com>
> 
> Hi Kirill,
> 
> These look fine. But in the future, Link:'s for Reported-by's would be
> very appreciated if the discussion happened in public.

Got it.

For this one it is:

Link: https://lore.kernel.org/all/CACT4Y+YfqSMsZArhh25TESmG-U4jO5Hjphz87wKSnTiaw2Wrfw@mail.gmail.com

-- 
  Kiryl Shutsemau / Kirill A. Shutemov