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Mon, 26 May 2025 08:44:11 -0400 X-MC-Unique: dMj72G03M5yEDm9qF2LNeQ-1 X-Mimecast-MFC-AGG-ID: dMj72G03M5yEDm9qF2LNeQ_1748263449 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id CC4E4180035E; Mon, 26 May 2025 12:44:08 +0000 (UTC) Received: from localhost (dhcp-192-216.str.redhat.com [10.33.192.216]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id D22FD180049D; Mon, 26 May 2025 12:44:06 +0000 (UTC) From: Cornelia Huck To: Shameerali Kolothum Thodi , "eric.auger.pro@gmail.com" , "eric.auger@redhat.com" , "qemu-devel@nongnu.org" , "qemu-arm@nongnu.org" , "kvmarm@lists.linux.dev" , "peter.maydell@linaro.org" , "richard.henderson@linaro.org" , "alex.bennee@linaro.org" , "maz@kernel.org" , "oliver.upton@linux.dev" , "sebott@redhat.com" , "armbru@redhat.com" , "berrange@redhat.com" , "abologna@redhat.com" , "jdenemar@redhat.com" Cc: "agraf@csgraf.de" , "shahuang@redhat.com" , "mark.rutland@arm.com" , "philmd@linaro.org" , "pbonzini@redhat.com" Subject: RE: [PATCH v3 00/10] kvm/arm: Introduce a customizable aarch64 KVM host model In-Reply-To: Organization: "Red Hat GmbH, Sitz: Werner-von-Siemens-Ring 12, D-85630 Grasbrunn, Handelsregister: Amtsgericht =?utf-8?Q?M=C3=BCnchen=2C?= HRB 153243, =?utf-8?Q?Gesch=C3=A4ftsf=C3=BChrer=3A?= Ryan Barnhart, Charles Cachera, Michael O'Neill, Amy Ross" References: <20250414163849.321857-1-cohuck@redhat.com> User-Agent: Notmuch/0.38.3 (https://notmuchmail.org) Date: Mon, 26 May 2025 14:44:04 +0200 Message-ID: <87bjrfbkyz.fsf@redhat.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 On Fri, May 23 2025, Shameerali Kolothum Thodi wrote: > Hi, > >> -----Original Message----- >> From: Cornelia Huck >> Sent: Monday, April 14, 2025 5:39 PM >> To: eric.auger.pro@gmail.com; eric.auger@redhat.com; qemu- >> devel@nongnu.org; qemu-arm@nongnu.org; kvmarm@lists.linux.dev; >> peter.maydell@linaro.org; richard.henderson@linaro.org; >> alex.bennee@linaro.org; maz@kernel.org; oliver.upton@linux.dev; >> sebott@redhat.com; Shameerali Kolothum Thodi >> ; armbru@redhat.com; >> berrange@redhat.com; abologna@redhat.com; jdenemar@redhat.com >> Cc: agraf@csgraf.de; shahuang@redhat.com; mark.rutland@arm.com; >> philmd@linaro.org; pbonzini@redhat.com; Cornelia Huck >> >> Subject: [PATCH v3 00/10] kvm/arm: Introduce a customizable aarch64 KVM >> host model > > [..] > > ) >> >> Code also available at >> https://gitlab.com/cohuck/qemu/-/tree/arm-cpu-model- >> rfcv3?ref_type=heads > > I had a spin with the above branch, but Qemu boot fails, > > ERROR:../target/arm/cpu64.c:57:get_sysreg_idx: code should not be reached > Bail out! ERROR:../target/arm/cpu64.c:57:get_sysreg_idx: code should not be reached > > From a quick debug, it looks like the below path results in an invalid ID idx. > > kvm_arm_expose_idreg_properties() > kvm_idx_to_idregs_idx(0) > get_sysreg_idx(0xc000) --> id_register seems to start at 0xc008 > > Haven't debugged further. > > I am running against a 6.15-rc1 kernel after updating the Qemu branch by, > ./update-aarch64-sysreg-code.sh path_to_6.15-rc1 > > Not sure I am missing anything. Please check and let me know. Thanks for trying this out; I'll try to re-create this here. (I think I've messed up those conversion functions often enough...)