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target-arm: Don't hardcode KVM target CPU to be A15 

Instead of assuming that a KVM target CPU must always be a
Cortex-A15 and hardcoding this in kvm_arch_init_vcpu(),
store the KVM_ARM_TARGET_* value in the ARMCPU class,
and use that.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-10-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2013-11-22 17:17:16 +00:00
parent f5fdcd6e58
commit 3541addc88
4 changed files with 24 additions and 1 deletions
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5
target-arm/cpu-qom.h
View File

@ -97,6 +97,11 @@ typedef struct ARMCPU {
/* Should CPU start in PSCI powered-off state? */
bool start_powered_off;
/* [QEMU_]KVM_ARM_TARGET_* constant for this CPU, or
* QEMU_KVM_ARM_TARGET_NONE if the kernel doesn't support this CPU type.
*/
uint32_t kvm_target;
/* The instance init functions for implementation-specific subclasses
* set these fields to specify the implementation-dependent values of
* various constant registers and reset values of non-constant

2
target-arm/cpu.c
View File

@ -223,6 +223,7 @@ static void arm_cpu_initfn(Object *obj)
* picky DTB consumer will also provide a helpful error message.
*/
cpu->dtb_compatible = "qemu,unknown";
cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE;
if (tcg_enabled() && !inited) {
inited = true;
@ -685,6 +686,7 @@ static void cortex_a15_initfn(Object *obj)
set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
set_feature(&cpu->env, ARM_FEATURE_DUMMY_C15_REGS);
set_feature(&cpu->env, ARM_FEATURE_LPAE);
cpu->kvm_target = QEMU_KVM_ARM_TARGET_CORTEX_A15;
cpu->midr = 0x412fc0f1;
cpu->reset_fpsid = 0x410430f0;
cpu->mvfr0 = 0x10110222;

11
target-arm/kvm-consts.h
View File

@ -48,6 +48,17 @@ MISMATCH_CHECK(PSCI_FN_CPU_OFF, KVM_PSCI_FN_CPU_OFF)
MISMATCH_CHECK(PSCI_FN_CPU_ON, KVM_PSCI_FN_CPU_ON)
MISMATCH_CHECK(PSCI_FN_MIGRATE, KVM_PSCI_FN_MIGRATE)
#define QEMU_KVM_ARM_TARGET_CORTEX_A15 0
/* There's no kernel define for this: sentinel value which
* matches no KVM target value for either 64 or 32 bit
*/
#define QEMU_KVM_ARM_TARGET_NONE UINT_MAX
#ifndef TARGET_AARCH64
MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_CORTEX_A15, KVM_ARM_TARGET_CORTEX_A15)
#endif
#undef MISMATCH_CHECK
#endif

7
target-arm/kvm.c
View File

@ -77,7 +77,12 @@ int kvm_arch_init_vcpu(CPUState *cs)
struct kvm_reg_list *rlp;
ARMCPU *cpu = ARM_CPU(cs);
init.target = KVM_ARM_TARGET_CORTEX_A15;
if (cpu->kvm_target == QEMU_KVM_ARM_TARGET_NONE) {
fprintf(stderr, "KVM is not supported for this guest CPU type\n");
return -EINVAL;
}
init.target = cpu->kvm_target;
memset(init.features, 0, sizeof(init.features));
if (cpu->start_powered_off) {
init.features[0] = 1 << KVM_ARM_VCPU_POWER_OFF;