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[193.116.193.175]) by smtp.gmail.com with ESMTPSA id w82sm1547171pff.7.2020.08.12.01.11.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2020 01:11:31 -0700 (PDT) Date: Wed, 12 Aug 2020 18:11:25 +1000 From: Nicholas Piggin Subject: Re: [PATCH v3 0/8] huge vmalloc mappings To: Jonathan Cameron , Zefan Li Cc: Borislav Petkov , =?iso-8859-1?q?Catalin=0A?= Marinas , "H. Peter Anvin" , linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, Ingo Molnar , Thomas Gleixner , Will Deacon , x86@kernel.org References: <20200810022732.1150009-1-npiggin@gmail.com> <20200811173217.0000161e@huawei.com> In-Reply-To: MIME-Version: 1.0 Message-Id: <1597219299.b5noer1k93.astroid@bobo.none> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Excerpts from Zefan Li's message of August 12, 2020 11:07 am: > On 2020/8/12 0:32, Jonathan Cameron wrote: >> On Mon, 10 Aug 2020 12:27:24 +1000 >> Nicholas Piggin wrote: >>=20 >>> Not tested on x86 or arm64, would appreciate a quick test there so I ca= n >>> ask Andrew to put it in -mm. Other option is I can disable huge vmalloc= s >>> for them for the time being. >>=20 >> Hi Nicholas, >>=20 >> For arm64 testing with a Kunpeng920. >>=20 >> I ran a quick sanity test with this series on top of mainline (yes mid m= erge window >> so who knows what state is...). Could I be missing some dependency? >>=20 >> Without them it boots, with them it doesn't. Any immediate guesses? >>=20 >=20 > I've already reported this bug in v2, and yeah I also tested it on arm64 > (not Kunpeng though), so looks like it still hasn't been fixed. Huh, I thought I did fix it but seems not. vmap stacks shouldn't be=20 big enough to use huge pages though, so I don't know what's going on there. I'll dig around a bit more. >=20 > ... >>> >>> Since v2: >>> - Rebased on vmalloc cleanups, split series into simpler pieces. >>> - Fixed several compile errors and warnings >>> - Keep the page array and accounting in small page units because >>> struct vm_struct is an interface (this should fix x86 vmap stack debu= g >>> assert). [Thanks Zefan] >=20 > though the changelog says it's fixed for x86. Yes, my mistake that was supposed to say arm64. Thanks, Nick