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From: Markus Armbruster <armbru@redhat.com>
To: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: berrange@redhat.com,  kchamart@redhat.com,
	pierrick.bouvier@oss.qualcomm.com,  peter.maydell@linaro.org,
	mst@redhat.com,  cohuck@redhat.com,  pbonzini@redhat.com,
	eblake@redhat.com,  jpb@kernel.org,
	 lorenzo.pieralisi@linaro.org, qemu-devel@nongnu.org,
	 qemu-arm@nongnu.org,  kvm@vger.kernel.org
Subject: Re: [RFC v1 23/25] docs/interop/firmware.json: Add arm-rme firmware feature
Date: Wed, 08 Jul 2026 06:37:29 +0200	[thread overview]
Message-ID: <87fr1um706.fsf@pond.sub.org> (raw)
In-Reply-To: <20260707224306.1202330-24-mathieu.poirier@linaro.org> (Mathieu Poirier's message of "Tue, 7 Jul 2026 16:43:04 -0600")

Mathieu Poirier <mathieu.poirier@linaro.org> writes:

> From: Jean-Philippe Brucker <jean-philippe@linaro.org>
>
> Some distributions provide packages continaing firmware to be run under
> QEMU, such as "qemu-efi-aarch64" or "edk2-aarch64". Those packages also
> contain descriptors in /usr/share/qemu/firmware/*.json listing the
> firmware features, so that environments like libvirt can figure out
> which firmware they can load.
>
> Define an optional feature for arm64 firmware to indicate that a
> firmware supports running in a Realm. Firmware implementations need
> extra support for running in a Realm, in particular to distinguish
> shared from private guest memory.
>
> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
> ---
>  docs/interop/firmware.json | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/docs/interop/firmware.json b/docs/interop/firmware.json
> index 421bee0e5ed4..c68d7f5013f8 100644
> --- a/docs/interop/firmware.json
> +++ b/docs/interop/firmware.json
> @@ -161,6 +161,9 @@
>  #     options related to this feature are documented in
>  #     "docs/system/i386/amd-memory-encryption.rst".
>  #
> +# @arm-rme: The firmware supports running in a Realm, under the Arm Realm
> +#           Management Extension (RME).
> +#

Please format like this

   # @arm-rme: The firmware supports running in a Realm, under the Arm
   #     Realm Management Extension (RME).

>  # @intel-tdx: The firmware supports running under Intel Trust Domain
>  #     Extensions (TDX).
>  #
> @@ -229,7 +232,7 @@
>  { 'enum' : 'FirmwareFeature',
>    'data' : [ 'acpi-s3', 'acpi-s4',
>               'amd-sev', 'amd-sev-es', 'amd-sev-snp',
> -             'intel-tdx',
> +             'arm-rme', 'intel-tdx',
>               'enrolled-keys', 'requires-smm',
>               'secure-boot', 'host-uefi-vars',
>               'verbose-dynamic', 'verbose-static' ] }

With the formatting tidied up
Acked-by: Markus Armbruster <armbru@redhat.com>


  reply	other threads:[~2026-07-08  4:37 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-07 22:42 [RFC v1 00/25] Add Realm support to QEMU-VMM Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 01/25] linux-headers: Add RME related definitions Mathieu Poirier
2026-07-10  1:09   ` Gavin Shan
2026-07-10  7:36     ` Lorenzo Pieralisi
2026-07-10 10:46     ` Lorenzo Pieralisi
2026-07-07 22:42 ` [RFC v1 02/25] target/arm/kvm: Return immediately on error in kvm_arch_init() Mathieu Poirier
2026-07-08  5:08   ` Philippe Mathieu-Daudé
2026-07-07 22:42 ` [RFC v1 03/25] target/arm: Add confidential guest support Mathieu Poirier
2026-07-08  4:39   ` Markus Armbruster
2026-07-09 20:22     ` Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 04/25] target/arm/kvm-rme: Add mechanic to initialize realms Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 05/25] target/arm/kvm: Split kvm_arch_get/put_registers Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 06/25] target/arm/kvm-rme: Initialize vCPU Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 07/25] target/arm/kvm: Create scratch Realm VM when requested Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 08/25] target/arm/kvm: Use kvm_vm_check_extension() where necessary Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 09/25] target/arm/kvm-rme: Initialise Realm Initial Address space Mathieu Poirier
2026-07-09 23:44   ` Gavin Shan
2026-07-10  7:37     ` Lorenzo Pieralisi
2026-07-07 22:42 ` [RFC v1 10/25] hw/core/loader: Add a ROM loader notifier Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 11/25] target/arm/kvm-rme: Keep track of images loaded in Realm memory Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 12/25] target/arm/kvm-rme: Populate Realm with runtime images Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 13/25] target/arm/cpu: Set number of breakpoints and watchpoints in KVM Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 14/25] target/arm/cpu: Set number of PMU counters " Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 15/25] target/arm/cpu: Don't read Realm registers Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 16/25] hw/arm/virt: Set proper conduit method for Realms Mathieu Poirier
2026-07-08  5:12   ` Philippe Mathieu-Daudé
2026-07-07 22:42 ` [RFC v1 17/25] hw/arm/virt: Embed Realm VM type with IPA address space Mathieu Poirier
2026-07-07 22:42 ` [RFC v1 18/25] hw/arm/virt: Reserve one bit of guest physical address for RME Mathieu Poirier
2026-07-07 22:43 ` [RFC v1 19/25] hw/arm/virt: Disable DTB randomness for confidential VMs Mathieu Poirier
2026-07-07 22:43 ` [RFC v1 20/25] hw/arm/virt: Move virt_flash_create() to machvirt_init() Mathieu Poirier
2026-07-08  5:14   ` Philippe Mathieu-Daudé
2026-07-07 22:43 ` [RFC v1 21/25] hw/arm/virt: Use RAM instead of flash for confidential guest firmware Mathieu Poirier
2026-07-07 22:43 ` [RFC v1 22/25] target/arm/kvm-rme: Add DMA remapping for the shared memory region Mathieu Poirier
2026-07-07 22:43 ` [RFC v1 23/25] docs/interop/firmware.json: Add arm-rme firmware feature Mathieu Poirier
2026-07-08  4:37   ` Markus Armbruster [this message]
2026-07-08  5:16   ` Philippe Mathieu-Daudé
2026-07-07 22:43 ` [RFC v1 24/25] hw/arm/boot: Load DTB as is for confidential VMs Mathieu Poirier
2026-07-07 22:43 ` [RFC v1 25/25] hw/arm/boot: Skip bootloader for confidential guests Mathieu Poirier

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