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[88.21.68.240]) by smtp.gmail.com with ESMTPSA id q3sm1938155wrm.86.2019.09.27.02.15.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 27 Sep 2019 02:15:13 -0700 (PDT) Subject: Re: Is kexec supported in QEMU for ARM64 (qemu-system-aarch64) with arm-trusted-firmware, optee, and u-boot. To: Lakshmi Ramasubramanian , qemu-arm , James Bottomley , qemu-devel@nongnu.org, Ard Biesheuvel References: <21633062-b021-a8e7-0cc8-062f4c29dde5@linux.microsoft.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Openpgp: id=89C1E78F601EE86C867495CBA2A3FD6EDEADC0DE; url=http://pgp.mit.edu/pks/lookup?op=get&search=0xA2A3FD6EDEADC0DE Message-ID: <65b49cb0-c9fb-d966-8dec-1e39d09ab8c7@redhat.com> Date: Fri, 27 Sep 2019 11:15:12 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-MC-Unique: i9G7anYvNiWd3uXZZJKMlg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Cc'ing Ard too On 9/27/19 12:35 AM, Lakshmi Ramasubramanian wrote: > On 9/26/19 8:17 AM, Lakshmi Ramasubramanian wrote: >=20 > The following commit for ARM Trusted Firmware for QEMU virt ARMv8-A > is almost 3 years old >=20 > https://salsa.debian.org/debian/atf-allwinner/commit/b6b671c4ac4bd5595306= 863225bb3bece1e6135c >=20 >=20 > Current limitations: > * Only cold boot is supported > * No build instructions for QEMU_EFI.fd and rootfs-arm64.cpio.gz > * No instructions for how to load a BL32 (Secure Payload) >=20 > So looks like only cold boot is supported (no kexec support) > Is this correct? >=20 >> When I execute kexec ("kexec -l ", followed by "kexec -e") I >> hit the following assert (in arm-trusted-firmware/plat/qemu/qemu_pm.c) >> >> /***********************************************************************= ******** >> >> =C2=A0=C2=A0* Platform handler called when a power domain is about to be= turned >> =C2=A0=C2=A0* off. The target_state encodes the power state that each le= vel should >> =C2=A0=C2=A0* transition to. >> ************************************************************************= ******/ >> >> void qemu_pwr_domain_off(const psci_power_state_t *target_state) >> { >> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0assert(0); >> } >> >> Is kexec supported in ARM64 QEMU (qemu-system-aarch64) - >> using arm-trusted-firmware, optee, and u-boot? >> >> Thanks, >> =C2=A0=C2=A0-lakshmi >=20 >=20