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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42d9b16bfbfsm29152325e9.22.2024.09.13.08.14.19 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Sep 2024 08:14:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1726240460; x=1726845260; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=B84tOEz4iH8LzYCOElAIMYy1A32McFCI6tkMUnYQHUs=; b=CKy+JZUhmxtRlXHTpGSy8oO67eNKil+lS5mKBg1JGkmsVmgmL5j67h+3SirnGDgf/E w6FeJ4ctPFLm+taWCO4qvNwhgMYTZAjrW3N2FQQb6LSWUQgUmhXKdX9ch3+Sz5jyjimP zykRIaY0v6/iDW9vZmwdCM7fonybaOkeq8fXkd6UFnbBi1jm5UClgVgCUL9XE/wBhDmA 5oqiZ0KbIOlFXz4LAYKRU3/BLbXqgA0XWNh+IAmqHkjYVdXMHjgTN/YUgQSqh523NYTU QdRIr4wEkptamXs6WpYOsJ7yEShUWmgsCmgfCLpa4z9fgrru8FDseOVQrvEQL2LLoWR8 xb0g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726240460; x=1726845260; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=B84tOEz4iH8LzYCOElAIMYy1A32McFCI6tkMUnYQHUs=; b=OjknKdbm79uUge+01tVsu95a3QvXU3HmWPSS3Mz7zKK0s47gPYOoxcTSxH9/uYf8GL 4eMNGCYpDzM/iPFXttYOrJTj55s6wUGXEL1WkWJUYsWarLH3vg3AlOGLPed/r1xwptVY C+XbTphlUaoDhH5q6Bcmdjmem6sQktTS1zEDyf/jPJVjS6sJWE7i5xaCrWQfUWangkrK tpHIJ9gDVOwa6KlQacBIrdeehawf4MiI5dK4726QZExGyo0yyhiazoH3BJPibU7tVp7I +kLXSkne2c8PK7yREfhECKpeuiynMkufXWT1QUAST2OfiiHGfXsmPLFXeeqxvL6NlUka 1DBw== X-Gm-Message-State: AOJu0YwojZmZ4lmQRvqB3xGbLWlucMkL0Gdc2UC89hbrx1aHTjG5DRCX oFgKKV9w5Zmi+5KpuOJhQdNxv2BcQHle04sHa9RH9JCxfh09ckC4rPOzkoX52AsNsLCaAYzVtyz K X-Google-Smtp-Source: AGHT+IEnnqptfmbNcUW3PsqlmGUjyPzKjI7BZzVGu2otH22KYdljGPDpY9kaDeNBfYYebpqvYWUMpw== X-Received: by 2002:a05:600c:1d1c:b0:42c:b22e:fc3e with SMTP id 5b1f17b1804b1-42cdb54c2f3mr57650205e9.15.1726240459821; Fri, 13 Sep 2024 08:14:19 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 13/27] hw/boards: Add hvf_get_physical_address_range to MachineClass Date: Fri, 13 Sep 2024 16:13:57 +0100 Message-Id: <20240913151411.2167922-14-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240913151411.2167922-1-peter.maydell@linaro.org> References: <20240913151411.2167922-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x32a.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, 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-BeenThere: qemu-devel@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-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1726240696748116600 Content-Type: text/plain; charset="utf-8" From: Danny Canter This addition will be necessary for some HVF related work to follow. For HVF on ARM there exists a set of APIs in macOS 13 to be able to adjust the IPA size for a given VM. This is useful as by default HVF uses 36 bits as the IPA size, so to support guests with > 64GB of RAM we'll need to reach for this. To have all the info necessary to carry this out however, we need some plumbing to be able to grab the memory map and compute the highest GPA prior to creating the VM. This is almost exactly like what kvm_type is used for on ARM today, and is also what this will be used for. We will compute the highest GPA and find what IPA size we'd need to satisfy this, and if it's valid (macOS today caps at 40b) we'll set this to be the IPA size in coming patches. This new method is only needed (today at least) on ARM, and obviously only for HVF/macOS, so admittedly it is much less generic than kvm_type today, but it seemed a somewhat sane way to get the information we need from the memmap at VM creation time. Signed-off-by: Danny Canter Message-id: 20240828111552.93482-2-danny_canter@apple.com Reviewed-by: Peter Maydell [PMM: removed explicit setting of field to NULL on x86] Signed-off-by: Peter Maydell --- include/hw/boards.h | 5 +++++ hw/arm/virt.c | 9 ++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/include/hw/boards.h b/include/hw/boards.h index 9a492770cbb..ff25c53671f 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -215,6 +215,10 @@ typedef struct { * Return the type of KVM corresponding to the kvm-type string option or * computed based on other criteria such as the host kernel capabilitie= s. * kvm-type may be NULL if it is not needed. + * @hvf_get_physical_address_range: + * Returns the physical address range in bits to use for the HVF virtual + * machine based on the current boards memory map. This may be NULL if = it + * is not needed. * @numa_mem_supported: * true if '--numa node.mem' option is supported and false otherwise * @hotplug_allowed: @@ -256,6 +260,7 @@ struct MachineClass { void (*reset)(MachineState *state, ShutdownCause reason); void (*wakeup)(MachineState *state); int (*kvm_type)(MachineState *machine, const char *arg); + int (*hvf_get_physical_address_range)(MachineState *machine); =20 BlockInterfaceType block_default_type; int units_per_default_bus; diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 7934b236516..d284a602e82 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -2111,7 +2111,8 @@ static void machvirt_init(MachineState *machine) =20 /* * In accelerated mode, the memory map is computed earlier in kvm_type= () - * to create a VM with the right number of IPA bits. + * for Linux, or hvf_get_physical_address_range() for macOS to create a + * VM with the right number of IPA bits. */ if (!vms->memmap) { Object *cpuobj; @@ -3031,6 +3032,11 @@ static int virt_kvm_type(MachineState *ms, const cha= r *type_str) return fixed_ipa ? 0 : requested_pa_size; } =20 +static int virt_hvf_get_physical_address_range(MachineState *ms) +{ + return 0; +} + static void virt_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc =3D MACHINE_CLASS(oc); @@ -3090,6 +3096,7 @@ static void virt_machine_class_init(ObjectClass *oc, = void *data) mc->valid_cpu_types =3D valid_cpu_types; mc->get_default_cpu_node_id =3D virt_get_default_cpu_node_id; mc->kvm_type =3D virt_kvm_type; + mc->hvf_get_physical_address_range =3D virt_hvf_get_physical_address_r= ange; assert(!mc->get_hotplug_handler); mc->get_hotplug_handler =3D virt_machine_get_hotplug_handler; hc->pre_plug =3D virt_machine_device_pre_plug_cb; --=20 2.34.1