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target/loongarch: Correct maximum physical address in KVM mode

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On 3A5000 system, the physical address space width for host is 48,
however 47 bit for KVM VM. For KVM VM, size of physical address space is
the same with that of virtual user space address.

Here modify physical address space width with 47 bit in KVM mode.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
This commit is contained in:
Bibo Mao 2025-02-19 15:07:00 +08:00
parent 7bd4eaa847
commit 0262c8075e
1 changed files with 8 additions and 2 deletions
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10
target/loongarch/cpu.c
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@ -406,7 +406,7 @@ static void loongarch_la464_initfn(Object *obj)
{
LoongArchCPU *cpu = LOONGARCH_CPU(obj);
CPULoongArchState *env = &cpu->env;
uint32_t data = 0;
uint32_t data = 0, field;
int i;
for (i = 0; i < 21; i++) {
@ -419,7 +419,13 @@ static void loongarch_la464_initfn(Object *obj)
data = FIELD_DP32(data, CPUCFG1, ARCH, 2);
data = FIELD_DP32(data, CPUCFG1, PGMMU, 1);
data = FIELD_DP32(data, CPUCFG1, IOCSR, 1);
data = FIELD_DP32(data, CPUCFG1, PALEN, 0x2f);
if (kvm_enabled()) {
/* GPA address width of VM is 47, field value is 47 - 1 */
field = 0x2e;
} else {
field = 0x2f; /* 48 bit - 1 */
}
data = FIELD_DP32(data, CPUCFG1, PALEN, field);
data = FIELD_DP32(data, CPUCFG1, VALEN, 0x2f);
data = FIELD_DP32(data, CPUCFG1, UAL, 1);
data = FIELD_DP32(data, CPUCFG1, RI, 1);