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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: h1LBag1XYG2WSHjMjKy3t4C2qxqHfaTyNmNRTLOGbVSSPzH/BsEdujDJLlrgjOybWhElIRjlPq97lo2x7KaszoH0aqgfBRDjq3mY7V1UhQPUmc7eVDzUNrVGBs0I1COvAhvm1OIhaGVVx9LQ160jY8kB8MONTK3AJNYtDTvUOvgTFdDdZT2CU5b8q/ns0HMNSkR0k+LmNtFFRhaOmFSLLTnt9vqajtTssYJVv836rYxkdUgrK/dXt2C+97wgHkUMpYlsH2GmTPcT15eqoEDqjTRjyt82zKpozHggcRZM0XX01OkZcWEEac50vGmEjcaTo4TGG/rRcZhVvY8onE2M+7gVaFXkAj5uhXUQiTIclHozpAG0U7lrZ1bdSy1BZXQZ0qHkv2tJxm0HDt7q3iZgENeMLrO4YpoJu6qEfLE4NrQrRTWI/v7lvK3SdMdAXUAU X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Apr 2026 16:15:58.0298 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9cb06979-4680-4eb3-1bdd-08dea478443f X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: AMS0EPF000001B0.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR08MB7543 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260427_091604_956275_7700B158 X-CRM114-Status: GOOD ( 10.60 ) 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 Now that it is possible and required to set the address of the GICv5 IRS in GPA space, update the documentation accordingly. This region must be 64KByte-aligned, and covers a total range of 128KBytes. Signed-off-by: Sascha Bischoff --- .../virt/kvm/devices/arm-vgic-v5.rst | 24 +++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/Documentation/virt/kvm/devices/arm-vgic-v5.rst b/Documentation= /virt/kvm/devices/arm-vgic-v5.rst index 1985b2d880322..2417eba01830c 100644 --- a/Documentation/virt/kvm/devices/arm-vgic-v5.rst +++ b/Documentation/virt/kvm/devices/arm-vgic-v5.rst @@ -12,12 +12,28 @@ Only one VGIC instance may be instantiated through this= API. The created VGIC will act as the VM interrupt controller, requiring emulated user-space dev= ices to inject interrupts to the VGIC instead of directly to CPUs. =20 -Creating a guest GICv5 device requires a GICv5 host. The current VGICv5 d= evice -only supports PPI interrupts. These can either be injected from emulated -in-kernel devices (such as the Arch Timer, or PMU), or via the KVM_IRQ_LIN= E -ioctl. +Creating a guest GICv5 device requires a GICv5 host. The VGICv5 device su= pports +PPI, SPI, and LPI interrupts. The PPI and SPI interrupts can either be in= jected +from emulated in-kernel devices (such as the Arch Timer, or PMU), or via t= he +KVM_IRQ_LINE ioctl. LPIs are not externally injected, but are handled in +hardware via the LPI IST. Their pending state is driven directly by the g= uest. =20 Groups: + KVM_DEV_ARM_VGIC_GRP_ADDR + Attributes: + + KVM_VGIC_V5_ADDR_TYPE_IRS (rw, 64-bit) + Base address in the guest physical address space of the GICv5 IRS + (Interrupt Routing Service) register mappings. Only valid for + KVM_DEV_TYPE_ARM_VGIC_V5. This address needs to be 64K aligned and = the + region covers 128 KByte - the IRS has a CONFIG_FRAME and a SETLPI_FR= AME, + each of which is 64kByte in sized. + + Setting the address of the IRS in GPA space is mandatory for initial= ising + a virtual GICv5 as the IRs is responsible for handling SPIs and + LPIs. Failure to set the IRS address prior to initialising the GIC r= esults + in an error. + KVM_DEV_ARM_VGIC_GRP_CTRL Attributes: =20 --=20 2.34.1