Merge branch 'kvm-arm64/for-3.14' into kvm-arm64/next

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 5d85a02d1231e9b6a3738e48cee574e19f987c6b..0a1d69751562d15ec7657a9e6c9e68aa54359b83 100644 (file)
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -26,7 +26,12 @@
 #include <asm/kvm_asm.h>
 #include <asm/kvm_mmio.h>
 
-#define KVM_MAX_VCPUS 4
+#if defined(CONFIG_KVM_ARM_MAX_VCPUS)
+#define KVM_MAX_VCPUS CONFIG_KVM_ARM_MAX_VCPUS
+#else
+#define KVM_MAX_VCPUS 0
+#endif
+
 #define KVM_USER_MEM_SLOTS 32
 #define KVM_PRIVATE_MEM_SLOTS 4
 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1

diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h
index 7c25ca8b02b379aec08cbceb9f819a4369c1421a..495ab6f84a6117a43344a49707bd400698bcf737 100644 (file)
--- a/arch/arm64/include/uapi/asm/kvm.h
+++ b/arch/arm64/include/uapi/asm/kvm.h
@@ -55,8 +55,9 @@ struct kvm_regs {
 #define KVM_ARM_TARGET_AEM_V8          0
 #define KVM_ARM_TARGET_FOUNDATION_V8   1
 #define KVM_ARM_TARGET_CORTEX_A57      2
+#define KVM_ARM_TARGET_XGENE_POTENZA   3
 
-#define KVM_ARM_NUM_TARGETS            3
+#define KVM_ARM_NUM_TARGETS            4
 
 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */
 #define KVM_ARM_DEVICE_TYPE_SHIFT      0

diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 4480ab339a007549c87f3bacc27c7c54f8b50b22..8ba85e9ea388d1778c54eabdd5ca34afad114faf 100644 (file)
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -36,6 +36,17 @@ config KVM_ARM_HOST
        ---help---
          Provides host support for ARM processors.
 
+config KVM_ARM_MAX_VCPUS
+       int "Number maximum supported virtual CPUs per VM"
+       depends on KVM_ARM_HOST
+       default 4
+       help
+         Static number of max supported virtual CPUs per VM.
+
+         If you choose a high number, the vcpu structures will be quite
+         large, so only choose a reasonable number that you expect to
+         actually use.
+
 config KVM_ARM_VGIC
        bool
        depends on KVM_ARM_HOST && OF

diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 3f0731e53274c92b540a2eab2d0f154005d815f4..08745578d54de84466f6bbc800e4dc984e0e1c4f 100644 (file)
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -207,20 +207,26 @@ int __attribute_const__ kvm_target_cpu(void)
        unsigned long implementor = read_cpuid_implementor();
        unsigned long part_number = read_cpuid_part_number();
 
-       if (implementor != ARM_CPU_IMP_ARM)
-               return -EINVAL;
+       switch (implementor) {
+       case ARM_CPU_IMP_ARM:
+               switch (part_number) {
+               case ARM_CPU_PART_AEM_V8:
+                       return KVM_ARM_TARGET_AEM_V8;
+               case ARM_CPU_PART_FOUNDATION:
+                       return KVM_ARM_TARGET_FOUNDATION_V8;
+               case ARM_CPU_PART_CORTEX_A57:
+                       return KVM_ARM_TARGET_CORTEX_A57;
+               };
+               break;
+       case ARM_CPU_IMP_APM:
+               switch (part_number) {
+               case APM_CPU_PART_POTENZA:
+                       return KVM_ARM_TARGET_XGENE_POTENZA;
+               };
+               break;
+       };
 
-       switch (part_number) {
-       case ARM_CPU_PART_AEM_V8:
-               return KVM_ARM_TARGET_AEM_V8;
-       case ARM_CPU_PART_FOUNDATION:
-               return KVM_ARM_TARGET_FOUNDATION_V8;
-       case ARM_CPU_PART_CORTEX_A57:
-               /* Currently handled by the generic backend */
-               return KVM_ARM_TARGET_CORTEX_A57;
-       default:
-               return -EINVAL;
-       }
+       return -EINVAL;
 }
 
 int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,

diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c
index 8da56067c304cd6b15e654015f8ecb6528c9bb65..df84d7bcc7dfc2586f14c4cd8db79a1752d530fe 100644 (file)
--- a/arch/arm64/kvm/handle_exit.c
+++ b/arch/arm64/kvm/handle_exit.c
@@ -39,9 +39,6 @@ static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run)
 
 static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run)
 {
-       if (kvm_psci_call(vcpu))
-               return 1;
-
        kvm_inject_undefined(vcpu);
        return 1;
 }

diff --git a/arch/arm64/kvm/sys_regs_generic_v8.c b/arch/arm64/kvm/sys_regs_generic_v8.c
index 4268ab9356b1f00e98ca022b207add3b8830fa33..8fe6f76b0edce8b80adc3640b82605a116c66315 100644 (file)
--- a/arch/arm64/kvm/sys_regs_generic_v8.c
+++ b/arch/arm64/kvm/sys_regs_generic_v8.c
@@ -90,6 +90,9 @@ static int __init sys_reg_genericv8_init(void)
                                          &genericv8_target_table);
        kvm_register_target_sys_reg_table(KVM_ARM_TARGET_CORTEX_A57,
                                          &genericv8_target_table);
+       kvm_register_target_sys_reg_table(KVM_ARM_TARGET_XGENE_POTENZA,
+                                         &genericv8_target_table);
+
        return 0;
 }
 late_initcall(sys_reg_genericv8_init);