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hw/arm/virt: Check the VCPU PA range in TCG mode

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We are about to allow the memory map to grow beyond 1TB and
potentially overshoot the VCPU AA64MMFR0.PARANGE.

In aarch64 mode and when highmem is set, let's check the VCPU
PA range is sufficient to address the highest GPA of the memory
map.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-id: 20190304101339.25970-10-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Eric Auger 2019-03-04 11:13:38 +01:00 • committed by Peter Maydell
parent c9650222b8
commit 2ba956ccfa
1 changed files with 17 additions and 0 deletions
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17
hw/arm/virt.c
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@ -60,6 +60,7 @@
#include "standard-headers/linux/input.h"
#include "hw/arm/smmuv3.h"
#include "hw/acpi/acpi.h"
#include "target/arm/internals.h"
#define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \
static void virt_##major##_##minor##_class_init(ObjectClass *oc, \
@ -1608,6 +1609,22 @@ static void machvirt_init(MachineState *machine)
fdt_add_timer_nodes(vms);
fdt_add_cpu_nodes(vms);
if (!kvm_enabled()) {
ARMCPU *cpu = ARM_CPU(first_cpu);
bool aarch64 = object_property_get_bool(OBJECT(cpu), "aarch64", NULL);
if (aarch64 && vms->highmem) {
int requested_pa_size, pamax = arm_pamax(cpu);
requested_pa_size = 64 - clz64(vms->highest_gpa);
if (pamax < requested_pa_size) {
error_report("VCPU supports less PA bits (%d) than requested "
"by the memory map (%d)", pamax, requested_pa_size);
exit(1);
}
}
}
memory_region_allocate_system_memory(ram, NULL, "mach-virt.ram",
machine->ram_size);
memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base, ram);