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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: G5kexwfMAjBVn1Kq90cxKgbn36fHdUmf4Z8+e1IZAESli5yjBL6bvBPraIPUjToftO9lAqCY/UeIV9eKbxBcrEsugRi8/4+6JKaSaI+o5UGyiWBX8MQzVHK52pEqY8haCU4gJy9OHgNL41WvartX012alxR/CJs3bYQzXyUs8zwaI2AChz3EX1y/k33T7q2x7cGMwofeaGdqM8vbCJC1r1O1RYYjxd4n1AtfD7/uqyc5T74mKv/dBOiwumMw2ZcDk12A3NditZIt8qETqPbw8y1eWh7ZzWg25o14l65u4E8T/ZXFuRG4MUBgq9vy9tV+dwuRtiMjWOkxizWqvNBuiHJnU/wqythRr+ecTOXH+GQw7WEigRyr3bOrJCB+dbQzUYa7CaIuz/VJrcWg0RV5b7Wu8DdZYJb/p9mby4+YYU3Y9CGfkvoABzquesv0YOLd X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Aug 2026 10:27:39.0154 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 58ee6324-5c11-4445-4e9e-08def6ca00d6 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: AM1PEPF000252E0.eurprd07.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: GVXPR08MB11815 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260810_032747_924511_ADA52022 X-CRM114-Status: GOOD ( 11.37 ) 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 all, While reviewing v4 of the KVM GICv5 IRS series [1], Sashiko [2] identified a number of issues in GICv5 and vGIC code that has already been merged. This series contains the fixes for these issues. The fixes are: * Free gic_kvm_info when vGIC initialisation fails because the maintenance interrupt is not provided but is required. This routes the failure through the existing cleanup path to free gic_kvm_info again. * Clear the per-CPU IRS pointer and IAFFID state when host IRS initialisation fails or an IRS is removed. This prevents the per-CPU state from retaining a pointer to freed IRS data, thereby avoiding a potential deference of a stale pointer later on. * Add an isb() after disabling the GICv5 CPU interface. This ensures that interrupts are disabled before the helper returns. * Fix speculative accesses in the common vGIC SPI lookup which could previously underflow. The SPI index is now made relative to the SPI array before array_index_nospec() constrains it rather than afterwards. * Reject GICv5 PPIs outside KVM's supported private IRQ range. These were previously clamped to zero, and hence would alias private IRQ 0 for an out-of-range PPI ID. These changes are based on v7.2-rc7. Thanks, Sascha [1] https://lore.kernel.org/all/20260724104819.1296803-1-sascha.bischoff@ar= m.com/ [2] https://sashiko.dev/#/patchset/20260724104819.1296803-1-sascha.bischoff= %40arm.com Sascha Bischoff (5): KVM: arm64: vgic: Free gic_kvm_info on initialization failure irqchip/gic-v5: Clear per-CPU IRS data on teardown irqchip/gic-v5: Synchronize CPU interface disable KVM: arm64: vgic: Prevent speculative SPI array underflow KVM: arm64: vgic: Reject out-of-range GICv5 PPI IDs arch/arm64/kvm/vgic/vgic-init.c | 4 +++- arch/arm64/kvm/vgic/vgic.c | 7 +++++-- drivers/irqchip/irq-gic-v5-irs.c | 16 ++++++++++++++++ drivers/irqchip/irq-gic-v5.c | 1 + 4 files changed, 25 insertions(+), 3 deletions(-) --=20 2.34.1=