[PATCH v7 18/24] hw/arm, accel/hvf, whpx: unify get_physical_address_range between WHPX and HVF

Mohamed Mediouni
2025-10-16T16:57:30Z

Signed-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
---
accel/hvf/hvf-all.c | 7 +++++--
hw/arm/virt.c | 41 ++++----------------------------------
include/hw/boards.h | 4 ++--
include/system/hvf_int.h | 2 ++
target/arm/hvf-stub.c | 20 -------------------
target/arm/hvf/hvf.c | 6 +++---
target/arm/hvf_arm.h | 3 ---
target/arm/whpx/whpx-all.c | 5 +++--
target/i386/hvf/hvf.c | 11 ++++++++++
9 files changed, 30 insertions(+), 69 deletions(-)
delete mode 100644 target/arm/hvf-stub.c

diff --git a/accel/hvf/hvf-all.c b/accel/hvf/hvf-all.c
index 0a4b498e83..8229ad8640 100644
--- a/accel/hvf/hvf-all.c
+++ b/accel/hvf/hvf-all.c
@@ -17,6 +17,7 @@
#include "system/hvf_int.h"
#include "hw/core/cpu.h"
#include "hw/boards.h"
+#include "target/arm/hvf_arm.h"
#include "trace.h"

bool hvf_allowed;
@@ -256,8 +257,10 @@ static int hvf_accel_init(AccelState *as, MachineState *ms)
int pa_range = 36;
MachineClass *mc = MACHINE_GET_CLASS(ms);

- if (mc->hvf_get_physical_address_range) {
- pa_range = mc->hvf_get_physical_address_range(ms);
+
+ if (mc->get_physical_address_range) {
+ pa_range = mc->get_physical_address_range(ms,
+ hvf_arch_get_default_ipa_bit_size(), hvf_arch_get_max_ipa_bit_size());
if (pa_range < 0) {
return -EINVAL;
}
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index b6b3e37f33..d3dd36908a 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -3258,43 +3258,11 @@ static int virt_kvm_type(MachineState *ms, const char *type_str)
return fixed_ipa ? 0 : requested_pa_size;
}

-static int virt_whpx_get_physical_address_range(MachineState *ms)
+static int virt_get_physical_address_range(MachineState *ms,
+ int default_ipa_size, int max_ipa_size)
{
VirtMachineState *vms = VIRT_MACHINE(ms);

- int max_ipa_size = whpx_arm_get_ipa_bit_size();
-
- /* We freeze the memory map to compute the highest gpa */
- virt_set_memmap(vms, max_ipa_size);
-
- int requested_ipa_size = 64 - clz64(vms->highest_gpa);
-
- /*
- * If we're <= the default IPA size just use the default.
- * If we're above the default but below the maximum, round up to
- * the maximum. hvf_arm_get_max_ipa_bit_size() conveniently only
- * returns values that are valid ARM PARange values.
- */
- if (requested_ipa_size <= max_ipa_size) {
- requested_ipa_size = max_ipa_size;
- } else {
- error_report("-m and ,maxmem option values "
- "require an IPA range (%d bits) larger than "
- "the one supported by the host (%d bits)",
- requested_ipa_size, max_ipa_size);
- return -1;
- }
-
- return requested_ipa_size;
-}
-
-static int virt_hvf_get_physical_address_range(MachineState *ms)
-{
- VirtMachineState *vms = VIRT_MACHINE(ms);
-
- int default_ipa_size = hvf_arm_get_default_ipa_bit_size();
- int max_ipa_size = hvf_arm_get_max_ipa_bit_size();
-
/* We freeze the memory map to compute the highest gpa */
virt_set_memmap(vms, max_ipa_size);

@@ -3303,7 +3271,7 @@ static int virt_hvf_get_physical_address_range(MachineState *ms)
/*
* If we're <= the default IPA size just use the default.
* If we're above the default but below the maximum, round up to
- * the maximum. hvf_arm_get_max_ipa_bit_size() conveniently only
+ * the maximum. hvf_arch_get_max_ipa_bit_size() conveniently only
* returns values that are valid ARM PARange values.
*/
if (requested_ipa_size <= default_ipa_size) {
@@ -3379,8 +3347,7 @@ static void virt_machine_class_init(ObjectClass *oc, const void *data)
mc->valid_cpu_types = valid_cpu_types;
mc->get_default_cpu_node_id = virt_get_default_cpu_node_id;
mc->kvm_type = virt_kvm_type;
- mc->hvf_get_physical_address_range = virt_hvf_get_physical_address_range;
- mc->whpx_get_physical_address_range = virt_whpx_get_physical_address_range;
+ mc->get_physical_address_range = virt_get_physical_address_range;
assert(!mc->get_hotplug_handler);
mc->get_hotplug_handler = virt_machine_get_hotplug_handler;
hc->pre_plug = virt_machine_device_pre_plug_cb;
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 3d01fb8cc9..aecf5ca92e 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -275,8 +275,8 @@ struct MachineClass {
void (*reset)(MachineState *state, ResetType type);
void (*wakeup)(MachineState *state);
int (*kvm_type)(MachineState *machine, const char *arg);
- int (*hvf_get_physical_address_range)(MachineState *machine);
- int (*whpx_get_physical_address_range)(MachineState *machine);
+ int (*get_physical_address_range)(MachineState *machine,
+ int default_ipa_size, int max_ipa_size);

BlockInterfaceType block_default_type;
int units_per_default_bus;
diff --git a/include/system/hvf_int.h b/include/system/hvf_int.h
index a3b06a3e75..8b6447c238 100644
--- a/include/system/hvf_int.h
+++ b/include/system/hvf_int.h
@@ -71,6 +71,8 @@ void assert_hvf_ok_impl(hv_return_t ret, const char *file, unsigned int line,
const char *hvf_return_string(hv_return_t ret);
int hvf_arch_init(void);
hv_return_t hvf_arch_vm_create(MachineState *ms, uint32_t pa_range);
+uint32_t hvf_arch_get_default_ipa_bit_size(void);
+uint32_t hvf_arch_get_max_ipa_bit_size(void);
int hvf_arch_init_vcpu(CPUState *cpu);
void hvf_arch_vcpu_destroy(CPUState *cpu);
int hvf_vcpu_exec(CPUState *);
diff --git a/target/arm/hvf-stub.c b/target/arm/hvf-stub.c
deleted file mode 100644
index ff137267a0..0000000000
--- a/target/arm/hvf-stub.c
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * QEMU Hypervisor.framework (HVF) stubs for ARM
- *
- * Copyright (c) Linaro
- *
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
-
-#include "qemu/osdep.h"
-#include "hvf_arm.h"
-
-uint32_t hvf_arm_get_default_ipa_bit_size(void)
-{
- g_assert_not_reached();
-}
-
-uint32_t hvf_arm_get_max_ipa_bit_size(void)
-{
- g_assert_not_reached();
-}
diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c
index 0658a99a2d..ecca1a63ec 100644
--- a/target/arm/hvf/hvf.c
+++ b/target/arm/hvf/hvf.c
@@ -725,7 +725,7 @@ static uint64_t hvf_get_reg(CPUState *cpu, int rt)
static void clamp_id_aa64mmfr0_parange_to_ipa_size(ARMISARegisters *isar)
{
uint32_t ipa_size = chosen_ipa_bit_size ?
- chosen_ipa_bit_size : hvf_arm_get_max_ipa_bit_size();
+ chosen_ipa_bit_size : hvf_arch_get_max_ipa_bit_size();
uint64_t id_aa64mmfr0;

/* Clamp down the PARange to the IPA size the kernel supports. */
@@ -816,7 +816,7 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf)
return r == HV_SUCCESS;
}

-uint32_t hvf_arm_get_default_ipa_bit_size(void)
+uint32_t hvf_arch_get_default_ipa_bit_size(void)
{
uint32_t default_ipa_size;
hv_return_t ret = hv_vm_config_get_default_ipa_size(&default_ipa_size);
@@ -825,7 +825,7 @@ uint32_t hvf_arm_get_default_ipa_bit_size(void)
return default_ipa_size;
}

-uint32_t hvf_arm_get_max_ipa_bit_size(void)
+uint32_t hvf_arch_get_max_ipa_bit_size(void)
{
uint32_t max_ipa_size;
hv_return_t ret = hv_vm_config_get_max_ipa_size(&max_ipa_size);
diff --git a/target/arm/hvf_arm.h b/target/arm/hvf_arm.h
index ea82f2691d..5d19d82e5d 100644
--- a/target/arm/hvf_arm.h
+++ b/target/arm/hvf_arm.h
@@ -22,7 +22,4 @@ void hvf_arm_init_debug(void);

void hvf_arm_set_cpu_features_from_host(ARMCPU *cpu);

-uint32_t hvf_arm_get_default_ipa_bit_size(void);
-uint32_t hvf_arm_get_max_ipa_bit_size(void);
-
#endif
diff --git a/target/arm/whpx/whpx-all.c b/target/arm/whpx/whpx-all.c
index 62fd6c230a..19513b50a3 100644
--- a/target/arm/whpx/whpx-all.c
+++ b/target/arm/whpx/whpx-all.c
@@ -808,8 +808,9 @@ int whpx_accel_init(AccelState *as, MachineState *ms)
goto error;
}

- if (mc->whpx_get_physical_address_range) {
- pa_range = mc->whpx_get_physical_address_range(ms);
+ if (mc->get_physical_address_range) {
+ pa_range = mc->get_physical_address_range(ms,
+ whpx_arm_get_ipa_bit_size(), whpx_arm_get_ipa_bit_size());
if (pa_range < 0) {
return -EINVAL;
}
diff --git a/target/i386/hvf/hvf.c b/target/i386/hvf/hvf.c
index 8445cadece..0994b8643d 100644
--- a/target/i386/hvf/hvf.c
+++ b/target/i386/hvf/hvf.c
@@ -225,6 +225,17 @@ int hvf_arch_init(void)
return 0;
}

+/* 48-bit on all Intel Macs. Function currently unused. */
+uint32_t hvf_arch_get_default_ipa_bit_size(void)
+{
+ g_assert_not_reached();
+}
+
+uint32_t hvf_arch_get_max_ipa_bit_size(void)
+{
+ g_assert_not_reached();
+}
+
hv_return_t hvf_arch_vm_create(MachineState *ms, uint32_t pa_range)
{
return hv_vm_create(HV_VM_DEFAULT);
--
2.50.1 (Apple Git-155)