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Wed, 07 Oct 2026 08:03:34 -0700 (PDT) Date: Wed, 7 Oct 2026 16:02:55 +0100 In-Reply-To: <20261007150255.1648849-1-vdonnefort@google.com> Mime-Version: 1.0 References: <20261007150255.1648849-1-vdonnefort@google.com> X-Mailer: git-send-email 2.56.0.rc1.315.gc6ed9934b7-goog Message-ID: <20261007150255.1648849-6-vdonnefort@google.com> Subject: [PATCH 5/5] drivers/virt: pkvm: Allow granule larger than PAGE_SIZE From: Vincent Donnefort To: catalin.marinas@arm.com, will@kernel.org Cc: mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel-team@android.com, fuad.tabba@linux.dev, Vincent Donnefort Content-Type: text/plain; charset="UTF-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261007_080336_951889_F2362CB3 X-CRM114-Status: GOOD ( 12.50 ) 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 Both MEM_SHARE and MMIO_GUARD now support a PAGE_SIZE smaller than the hypervisor granule. We can relax this restriction. Signed-off-by: Vincent Donnefort --- drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c b/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c index 3852be6bd16b..e3363a69a7eb 100644 --- a/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c +++ b/drivers/virt/coco/pkvm-guest/arm-pkvm-guest.c @@ -135,7 +135,7 @@ void __init pkvm_init_hyp_services(void) arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_HYP_MEMINFO_FUNC_ID, 0, 0, 0, &res); - if (res.a0 > PAGE_SIZE) /* Includes error codes */ + if ((long)res.a0 <= 0) return; pkvm_granule = res.a0; -- 2.56.0.rc1.315.gc6ed9934b7-goog