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([2001:b07:6468:f312:b509:fc01:ee8a:ca8a]) by smtp.gmail.com with ESMTPSA id h2sm53828069wrv.66.2020.01.21.07.10.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Jan 2020 07:10:31 -0800 (PST) Subject: Re: [PATCH 00/14] KVM: x86/mmu: Huge page fixes, cleanup, and DAX To: Barret Rhoden , Sean Christopherson Cc: Paul Mackerras , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Andrew Morton , Marc Zyngier , James Morse , Julien Thierry , Suzuki K Poulose , kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, syzbot+c9d1fb51ac9d0d10c39d@syzkaller.appspotmail.com, Andrea Arcangeli , Dan Williams , David Hildenbrand , Jason Zeng , Dave Jiang , Liran Alon , linux-nvdimm References: <20200108202448.9669-1-sean.j.christopherson@intel.com> From: Paolo Bonzini Message-ID: Date: Tue, 21 Jan 2020 16:10:30 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 09/01/20 20:47, Barret Rhoden wrote: > Hi - > > On 1/8/20 3:24 PM, Sean Christopherson wrote: >> This series is a mix of bug fixes, cleanup and new support in KVM's >> handling of huge pages.  The series initially stemmed from a syzkaller >> bug report[1], which is fixed by patch 02, "mm: thp: KVM: Explicitly >> check for THP when populating secondary MMU". >> >> While investigating options for fixing the syzkaller bug, I realized KVM >> could reuse the approach from Barret's series to enable huge pages for >> DAX >> mappings in KVM[2] for all types of huge mappings, i.e. walk the host >> page >> tables instead of querying metadata (patches 05 - 09). > > Thanks, Sean.  I tested this patch series out, and it works for me. > (Huge KVM mappings of a DAX file, etc.). Queued, thanks. Paolo