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authorJames Hogan <james.hogan@imgtec.com>2017-03-14 13:15:22 +0300
committerJames Hogan <james.hogan@imgtec.com>2017-03-28 16:53:48 +0300
commit607ef2fdeb95ae63322321ca15b41f76870f48f1 (patch)
tree1efe20ac79dc2c112ee18c0a4de6f0713a91d6c7 /arch/mips/kvm
parenta517c1ad65921765d5ac8594567c7bb6f352655c (diff)
downloadlinux-607ef2fdeb95ae63322321ca15b41f76870f48f1.tar.xz
KVM: MIPS: Add callback to check extension
Add an implementation callback for checking presence of KVM extensions. This allows implementation specific extensions to be provided without ifdefs in mips.c. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org
Diffstat (limited to 'arch/mips/kvm')
-rw-r--r--arch/mips/kvm/mips.c3
-rw-r--r--arch/mips/kvm/trap_emul.c17
2 files changed, 18 insertions, 2 deletions
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 36561df8a7a7..78d58c2528a9 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -1043,7 +1043,6 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_READONLY_MEM:
case KVM_CAP_SYNC_MMU:
case KVM_CAP_IMMEDIATE_EXIT:
- case KVM_CAP_MIPS_TE:
r = 1;
break;
case KVM_CAP_COALESCED_MMIO:
@@ -1075,7 +1074,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
r = cpu_has_msa && !(boot_cpu_data.msa_id & MSA_IR_WRPF);
break;
default:
- r = 0;
+ r = kvm_mips_callbacks->check_extension(kvm, ext);
break;
}
return r;
diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c
index 0e3d260aafcb..db3c48634eda 100644
--- a/arch/mips/kvm/trap_emul.c
+++ b/arch/mips/kvm/trap_emul.c
@@ -488,6 +488,22 @@ static int kvm_trap_emul_handle_msa_disabled(struct kvm_vcpu *vcpu)
return ret;
}
+static int kvm_trap_emul_check_extension(struct kvm *kvm, long ext)
+{
+ int r;
+
+ switch (ext) {
+ case KVM_CAP_MIPS_TE:
+ r = 1;
+ break;
+ default:
+ r = 0;
+ break;
+ }
+
+ return r;
+}
+
static int kvm_trap_emul_vcpu_init(struct kvm_vcpu *vcpu)
{
struct mm_struct *kern_mm = &vcpu->arch.guest_kernel_mm;
@@ -1238,6 +1254,7 @@ static struct kvm_mips_callbacks kvm_trap_emul_callbacks = {
.handle_fpe = kvm_trap_emul_handle_fpe,
.handle_msa_disabled = kvm_trap_emul_handle_msa_disabled,
+ .check_extension = kvm_trap_emul_check_extension,
.vcpu_init = kvm_trap_emul_vcpu_init,
.vcpu_uninit = kvm_trap_emul_vcpu_uninit,
.vcpu_setup = kvm_trap_emul_vcpu_setup,