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Mon, 09 Mar 2026 14:49:15 -0700 (PDT) Received: from 192.168.0.29 ([2804:14d:4c71:86dd:4cc9:ee1b:bd8d:dbab]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2be4f82b1d3sm10821438eec.11.2026.03.09.14.49.13 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 09 Mar 2026 14:49:15 -0700 (PDT) From: Lucas Amaral To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, agraf@csgraf.de, Lucas Amaral Subject: [PATCH 2/2] target/arm/hvf: set 4KB IPA granule on macOS 26 Date: Mon, 9 Mar 2026 18:49:06 -0300 Message-ID: <20260309214906.92578-3-lucaaamaral@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260309214906.92578-1-lucaaamaral@gmail.com> References: <20260309214906.92578-1-lucaaamaral@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::132a; envelope-from=lucaaamaral@gmail.com; helo=mail-dy1-x132a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, FSL_HELO_BARE_IP_2=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Mon, 09 Mar 2026 18:16:33 -0400 X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org macOS 26 introduces hv_vm_config_set_ipa_granule() which allows configuring 4KB IPA granularity for HVF virtual machines. This enables hv_vm_map() to accept 4KB-aligned addresses, matching the guest kernel's page size. Without this, virtio-gpu blob BAR offsets that are 4KB-aligned but not 16KB-aligned cannot be mapped into the guest, falling back to slow MMIO emulation. Gated behind MAC_OS_VERSION_26_0 compile-time and __builtin_available runtime checks. Falls back to the default 16KB granule on older macOS versions. Signed-off-by: Lucas Amaral --- target/arm/hvf/hvf.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 87ddcdb..b71a98a 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -960,6 +960,20 @@ hv_return_t hvf_arch_vm_create(MachineState *ms, uint32_t pa_range) } chosen_ipa_bit_size = pa_range; +#ifdef MAC_OS_VERSION_26_0 +#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_VERSION_26_0 + if (__builtin_available(macOS 26, *)) { + ret = hv_vm_config_set_ipa_granule(config, HV_IPA_GRANULE_4KB); + if (ret != HV_SUCCESS) { + error_report("HVF: failed to set 4KB IPA granule: %s", + hvf_return_string(ret)); + goto cleanup; + } + hvf_set_map_granule(4096); + } +#endif +#endif + ret = hv_vm_create(config); cleanup: -- 2.52.0