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author | Peter Maydell <peter.maydell@linaro.org> | 2013-11-22 17:17:17 +0000 |
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committer | Peter Maydell <peter.maydell@linaro.org> | 2013-12-10 13:28:49 +0000 |
commit | a96c0514ab7d74ecb04677d3dc599facafa44e5b (patch) | |
tree | 73984922f3d8f6caf1ed7dca12b70e73f2a2079b /target-arm/kvm_arm.h | |
parent | 3541addc888413b84fb309e3f4abf210c0c5eb57 (diff) | |
download | qemu-a96c0514ab7d74ecb04677d3dc599facafa44e5b.zip qemu-a96c0514ab7d74ecb04677d3dc599facafa44e5b.tar.gz qemu-a96c0514ab7d74ecb04677d3dc599facafa44e5b.tar.bz2 |
target-arm: Provide '-cpu host' when running KVM
Implement '-cpu host' for ARM when we're using KVM, broadly
in line with other KVM-supporting architectures.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-11-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'target-arm/kvm_arm.h')
-rw-r--r-- | target-arm/kvm_arm.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target-arm/kvm_arm.h b/target-arm/kvm_arm.h index 5d14887..cd3d13c 100644 --- a/target-arm/kvm_arm.h +++ b/target-arm/kvm_arm.h @@ -62,4 +62,59 @@ bool write_list_to_kvmstate(ARMCPU *cpu); */ bool write_kvmstate_to_list(ARMCPU *cpu); +#ifdef CONFIG_KVM +/** + * kvm_arm_create_scratch_host_vcpu: + * @cpus_to_try: array of QEMU_KVM_ARM_TARGET_* values (terminated with + * QEMU_KVM_ARM_TARGET_NONE) to try as fallback if the kernel does not + * know the PREFERRED_TARGET ioctl + * @fdarray: filled in with kvmfd, vmfd, cpufd file descriptors in that order + * @init: filled in with the necessary values for creating a host vcpu + * + * Create a scratch vcpu in its own VM of the type preferred by the host + * kernel (as would be used for '-cpu host'), for purposes of probing it + * for capabilities. + * + * Returns: true on success (and fdarray and init are filled in), + * false on failure (and fdarray and init are not valid). + */ +bool kvm_arm_create_scratch_host_vcpu(const uint32_t *cpus_to_try, + int *fdarray, + struct kvm_vcpu_init *init); + +/** + * kvm_arm_destroy_scratch_host_vcpu: + * @fdarray: array of fds as set up by kvm_arm_create_scratch_host_vcpu + * + * Tear down the scratch vcpu created by kvm_arm_create_scratch_host_vcpu. + */ +void kvm_arm_destroy_scratch_host_vcpu(int *fdarray); + +#define TYPE_ARM_HOST_CPU "host-" TYPE_ARM_CPU +#define ARM_HOST_CPU_CLASS(klass) \ + OBJECT_CLASS_CHECK(ARMHostCPUClass, (klass), TYPE_ARM_HOST_CPU) +#define ARM_HOST_CPU_GET_CLASS(obj) \ + OBJECT_GET_CLASS(ARMHostCPUClass, (obj), TYPE_ARM_HOST_CPU) + +typedef struct ARMHostCPUClass { + /*< private >*/ + ARMCPUClass parent_class; + /*< public >*/ + + uint64_t features; + uint32_t target; + const char *dtb_compatible; +} ARMHostCPUClass; + +/** + * kvm_arm_get_host_cpu_features: + * @ahcc: ARMHostCPUClass to fill in + * + * Probe the capabilities of the host kernel's preferred CPU and fill + * in the ARMHostCPUClass struct accordingly. + */ +bool kvm_arm_get_host_cpu_features(ARMHostCPUClass *ahcc); + +#endif + #endif |