diff options
| -rw-r--r-- | accel/hvf/hvf-accel-ops.c | 12 | ||||
| -rw-r--r-- | hw/arm/virt.c | 31 | ||||
| -rw-r--r-- | target/arm/hvf/hvf.c | 56 | ||||
| -rw-r--r-- | target/arm/hvf_arm.h | 19 | ||||
| -rw-r--r-- | target/arm/internals.h | 19 | ||||
| -rw-r--r-- | target/arm/ptw.c | 15 |
6 files changed, 149 insertions, 3 deletions
diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c index dbebf209f4..d60874d3e6 100644 --- a/accel/hvf/hvf-accel-ops.c +++ b/accel/hvf/hvf-accel-ops.c @@ -53,6 +53,7 @@ #include "exec/address-spaces.h" #include "exec/exec-all.h" #include "gdbstub/enums.h" +#include "hw/boards.h" #include "sysemu/cpus.h" #include "sysemu/hvf.h" #include "sysemu/hvf_int.h" @@ -319,8 +320,17 @@ static int hvf_accel_init(MachineState *ms) int x; hv_return_t ret; HVFState *s; + int pa_range = 36; + MachineClass *mc = MACHINE_GET_CLASS(ms); - ret = hvf_arch_vm_create(ms, 0); + if (mc->hvf_get_physical_address_range) { + pa_range = mc->hvf_get_physical_address_range(ms); + if (pa_range < 0) { + return -EINVAL; + } + } + + ret = hvf_arch_vm_create(ms, (uint32_t)pa_range); assert_hvf_ok(ret); s = g_new0(HVFState, 1); diff --git a/hw/arm/virt.c b/hw/arm/virt.c index d284a602e8..8b2b991d97 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -66,6 +66,7 @@ #include "hw/intc/arm_gicv3_its_common.h" #include "hw/irq.h" #include "kvm_arm.h" +#include "hvf_arm.h" #include "hw/firmware/smbios.h" #include "qapi/visitor.h" #include "qapi/qapi-visit-common.h" @@ -3034,7 +3035,35 @@ static int virt_kvm_type(MachineState *ms, const char *type_str) static int virt_hvf_get_physical_address_range(MachineState *ms) { - return 0; + 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); + + 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 <= default_ipa_size) { + requested_ipa_size = default_ipa_size; + } else 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 void virt_machine_class_init(ObjectClass *oc, void *data) diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 19964d241e..6cea483d42 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -22,6 +22,7 @@ #include <mach/mach_time.h> #include "exec/address-spaces.h" +#include "hw/boards.h" #include "hw/irq.h" #include "qemu/main-loop.h" #include "sysemu/cpus.h" @@ -297,6 +298,8 @@ void hvf_arm_init_debug(void) static void hvf_wfi(CPUState *cpu); +static uint32_t chosen_ipa_bit_size; + typedef struct HVFVTimer { /* Vtimer value during migration and paused state */ uint64_t vtimer_val; @@ -839,6 +842,16 @@ static uint64_t hvf_get_reg(CPUState *cpu, int rt) return val; } +static void clamp_id_aa64mmfr0_parange_to_ipa_size(uint64_t *id_aa64mmfr0) +{ + uint32_t ipa_size = chosen_ipa_bit_size ? + chosen_ipa_bit_size : hvf_arm_get_max_ipa_bit_size(); + + /* Clamp down the PARange to the IPA size the kernel supports. */ + uint8_t index = round_down_to_parange_index(ipa_size); + *id_aa64mmfr0 = (*id_aa64mmfr0 & ~R_ID_AA64MMFR0_PARANGE_MASK) | index; +} + static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) { ARMISARegisters host_isar = {}; @@ -882,6 +895,8 @@ static bool hvf_arm_get_host_cpu_features(ARMHostCPUFeatures *ahcf) r |= hv_vcpu_get_sys_reg(fd, HV_SYS_REG_MIDR_EL1, &ahcf->midr); r |= hv_vcpu_destroy(fd); + clamp_id_aa64mmfr0_parange_to_ipa_size(&host_isar.id_aa64mmfr0); + ahcf->isar = host_isar; /* @@ -904,6 +919,30 @@ 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 default_ipa_size; + hv_return_t ret = hv_vm_config_get_default_ipa_size(&default_ipa_size); + assert_hvf_ok(ret); + + return default_ipa_size; +} + +uint32_t hvf_arm_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); + assert_hvf_ok(ret); + + /* + * We clamp any IPA size we want to back the VM with to a valid PARange + * value so the guest doesn't try and map memory outside of the valid range. + * This logic just clamps the passed in IPA bit size to the first valid + * PARange value <= to it. + */ + return round_down_to_parange_bit_size(max_ipa_size); +} + void hvf_arm_set_cpu_features_from_host(ARMCPU *cpu) { if (!arm_host_cpu_features.dtb_compatible) { @@ -931,8 +970,18 @@ void hvf_arch_vcpu_destroy(CPUState *cpu) hv_return_t hvf_arch_vm_create(MachineState *ms, uint32_t pa_range) { + hv_return_t ret; hv_vm_config_t config = hv_vm_config_create(); - hv_return_t ret = hv_vm_create(config); + + ret = hv_vm_config_set_ipa_size(config, pa_range); + if (ret != HV_SUCCESS) { + goto cleanup; + } + chosen_ipa_bit_size = pa_range; + + ret = hv_vm_create(config); + +cleanup: os_release(config); return ret; @@ -1004,6 +1053,11 @@ int hvf_arch_init_vcpu(CPUState *cpu) &arm_cpu->isar.id_aa64mmfr0); assert_hvf_ok(ret); + clamp_id_aa64mmfr0_parange_to_ipa_size(&arm_cpu->isar.id_aa64mmfr0); + ret = hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_ID_AA64MMFR0_EL1, + arm_cpu->isar.id_aa64mmfr0); + assert_hvf_ok(ret); + return 0; } diff --git a/target/arm/hvf_arm.h b/target/arm/hvf_arm.h index e848c1d27d..26c717b382 100644 --- a/target/arm/hvf_arm.h +++ b/target/arm/hvf_arm.h @@ -22,4 +22,23 @@ void hvf_arm_init_debug(void); void hvf_arm_set_cpu_features_from_host(ARMCPU *cpu); +#ifdef CONFIG_HVF + +uint32_t hvf_arm_get_default_ipa_bit_size(void); +uint32_t hvf_arm_get_max_ipa_bit_size(void); + +#else + +static inline uint32_t hvf_arm_get_default_ipa_bit_size(void) +{ + return 0; +} + +static inline uint32_t hvf_arm_get_max_ipa_bit_size(void) +{ + return 0; +} + +#endif + #endif diff --git a/target/arm/internals.h b/target/arm/internals.h index 203a2dae14..c5d7b0b492 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -450,6 +450,25 @@ static inline void update_spsel(CPUARMState *env, uint32_t imm) */ unsigned int arm_pamax(ARMCPU *cpu); +/* + * round_down_to_parange_index + * @bit_size: uint8_t + * + * Rounds down the bit_size supplied to the first supported ARM physical + * address range and returns the index for this. The index is intended to + * be used to set ID_AA64MMFR0_EL1's PARANGE bits. + */ +uint8_t round_down_to_parange_index(uint8_t bit_size); + +/* + * round_down_to_parange_bit_size + * @bit_size: uint8_t + * + * Rounds down the bit_size supplied to the first supported ARM physical + * address range bit size and returns this. + */ +uint8_t round_down_to_parange_bit_size(uint8_t bit_size); + /* Return true if extended addresses are enabled. * This is always the case if our translation regime is 64 bit, * but depends on TTBCR.EAE for 32 bit. diff --git a/target/arm/ptw.c b/target/arm/ptw.c index 278004661b..defd6b84de 100644 --- a/target/arm/ptw.c +++ b/target/arm/ptw.c @@ -96,6 +96,21 @@ static const uint8_t pamax_map[] = { [6] = 52, }; +uint8_t round_down_to_parange_index(uint8_t bit_size) +{ + for (int i = ARRAY_SIZE(pamax_map) - 1; i >= 0; i--) { + if (pamax_map[i] <= bit_size) { + return i; + } + } + g_assert_not_reached(); +} + +uint8_t round_down_to_parange_bit_size(uint8_t bit_size) +{ + return pamax_map[round_down_to_parange_index(bit_size)]; +} + /* * The cpu-specific constant value of PAMax; also used by hw/arm/virt. * Note that machvirt_init calls this on a CPU that is inited but not realized! |