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Miller" , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Date: Fri, 24 Oct 2025 15:47:43 +0100 In-Reply-To: References: <20251015082727.2395128-1-kevin.brodsky@arm.com> <20251015082727.2395128-12-kevin.brodsky@arm.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-KCNFYCezFnaGZQ+WN2tw" User-Agent: Evolution 3.52.3-0ubuntu1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html X-Rspam-User: X-Rspamd-Queue-Id: 2B5F64000B X-Rspamd-Server: rspam02 X-Stat-Signature: 76s9idth5q6u5xb6m8b6on5dhnwcx6hx X-HE-Tag: 1761317271-303623 X-HE-Meta: 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 Qu1sg8mu 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: --=-KCNFYCezFnaGZQ+WN2tw Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2025-10-23 at 22:06 +0200, David Hildenbrand wrote: > On 15.10.25 10:27, Kevin Brodsky wrote: > > We currently set a TIF flag when scheduling out a task that is in > > lazy MMU mode, in order to restore it when the task is scheduled > > again. > >=20 > > The generic lazy_mmu layer now tracks whether a task is in lazy MMU > > mode in task_struct::lazy_mmu_state. We can therefore check that > > state when switching to the new task, instead of using a separate > > TIF flag. > >=20 > > Signed-off-by: Kevin Brodsky > > --- >=20 >=20 > Looks ok to me, but I hope we get some confirmation from x86 / xen > folks. I know tglx has shouted at me in the past for precisely this reminder, but you know you can test Xen guests under QEMU/KVM now and don't need to actually run Xen? 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