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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 folks, V2 of the kvm/arm64 audit fixes [1]. Changes since v1: Patch 1 (SCTLR_EL2.EIS|EOS): Fixes: tag corrected to 0a35bd285f43 ("arm64: Convert SCTLR_EL2 to sysreg infrastructure"); the commit message now explains that the conversion auto-generated SCTLR_EL2_RES1 to UL(0). Code unchanged. Patches 2-3 (NULL vcpu guard, __deactivate_fgt typo): unchanged. Patch 4 (new): Seed selftest_vcpu's memcache to mirror hyp-main.c's pkvm_refill_memcache() flow; required by the pre-check in patches 5-6. Patches 5-6 (host->guest share/donate, formerly v1 patches 5-6): reworked to pre-check the vcpu memcache against kvm_mmu_cache_min_pages() during the existing pre-check pass, before any state mutation. The WARN_ON() around kvm_pgtable_stage2_map() then asserts an invariant the pre-check pass establishes, rather than swallowing a reachable -ENOMEM. Dropped since v1: - Patch 2 (HCR_EL2 sync): failure path not reachable. - Patches 7-8 (guest->host share/unshare): the stage-2 map cannot fail at those call sites (the leaf already exists). Carried `Reviewed-by` tag (thanks!) and added `Assisted-by:` tags. Note that with `review-prompts` in the `Assisted-by:` tags, I am referring to subsystem guides that I added to the base prompts [2], which I plan submit for upstreaming. Cheers, /fuad [1] https://lore.kernel.org/all/20260428103008.696141-1-tabba@google.com/ [2] https://github.com/masoncl/review-prompts Fuad Tabba (6): KVM: arm64: Make EL2 exception entry and exit context-synchronization events KVM: arm64: Guard against NULL vcpu on VHE hyp panic path KVM: arm64: Fix __deactivate_fgt macro parameter typo KVM: arm64: Seed pkvm_ownership_selftest vcpu memcache KVM: arm64: Pre-check vcpu memcache for host->guest share KVM: arm64: Pre-check vcpu memcache for host->guest donate arch/arm64/include/asm/sysreg.h | 2 +- arch/arm64/kvm/hyp/include/hyp/switch.h | 2 +- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 24 ++++++++++++++++++++++++ arch/arm64/kvm/hyp/nvhe/pkvm.c | 16 +++++++++++++++- arch/arm64/kvm/hyp/vhe/switch.c | 3 ++- 5 files changed, 43 insertions(+), 4 deletions(-) -- 2.54.0.545.g6539524ca2-goog