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Tue, 14 Jan 2025 14:38:12 +0000 Date: Tue, 14 Jan 2025 14:38:11 +0000 Message-ID: <86h661wje4.wl-maz@kernel.org> From: Marc Zyngier To: Eric Auger Cc: Ganapatrao Kulkarni , kvmarm , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, oliver.upton@linux.dev, christoffer.dall@arm.com, suzuki.poulose@arm.com, will@kernel.org, catalin.marinas@arm.com, coltonlewis@google.com, joey.gouly@arm.com, yuzenghui@huawei.com, darren@os.amperecomputing.com, vishnu@os.amperecomputing.com Subject: Re: [PATCH] KVM: arm64: nv: Set ISTATUS for emulated timers, If timer expired In-Reply-To: <152d262e-641d-4bb1-9656-a13e049d62c4@redhat.com> References: <20241209053201.339939-1-gankulkarni@os.amperecomputing.com> <867c89tc4q.wl-maz@kernel.org> <865xntt2kv.wl-maz@kernel.org> <8be59ff3-6a68-48e1-8181-0ce4b2e7180f@os.amperecomputing.com> <86y10osr19.wl-maz@kernel.org> <4d443db1-85b1-4071-acd5-3187deb9cb17@redhat.com> <2f6b2cb1-3d32-480a-9801-9b993ae74e2d@os.amperecomputing.com> <152d262e-641d-4bb1-9656-a13e049d62c4@redhat.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.4 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: eauger@redhat.com, gankulkarni@os.amperecomputing.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, oliver.upton@linux.dev, christoffer.dall@arm.com, suzuki.poulose@arm.com, will@kernel.org, catalin.marinas@arm.com, coltonlewis@google.com, joey.gouly@arm.com, yuzenghui@huawei.com, darren@os.amperecomputing.com, vishnu@os.amperecomputing.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250114_063816_127315_34439DA8 X-CRM114-Status: GOOD ( 13.03 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Eric, On Tue, 14 Jan 2025 13:12:21 +0000, Eric Auger wrote: > > I also confirm that using a mailine edk2 fixed the issues I faced > previously (fed/rhel L1 guest not booting). > > I used Marc's nv-next branch and qemu rebase. When did you sample this branch? It is almost daily rebased at the moment, given that we keep piling up things in kvmarm/next. > With a rhel L1 guest I can now boot buildroot, debian and rhel guest as > L2 (feat mainline edk2). For rhel, I tested different kinds of page size > combinations for L1/L2 (4k and 64kB) and it worked. > > I tested on AmpereOne and Grace-Hopper systems Thanks for the confirmation. I haven't had a chance to try QEMU yet, but I expect that save/restore will not work. Something to look into, I guess. M. -- Without deviation from the norm, progress is not possible.