diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2021-02-02 13:19:35 +0000 |
|---|---|---|
| committer | David Woodhouse <dwmw@amazon.co.uk> | 2021-02-04 14:19:38 +0000 |
| commit | 78e9878cb376969d184a4b7fff392528fe17a3ce (patch) | |
| tree | ddb72b6e09dce019e2e883da15908103f06a626b /arch/x86/kvm | |
| parent | 79033bebf6fa3045bfa9bbe543c0eb7b43a0f4a3 (diff) | |
| download | linux-78e9878cb376969d184a4b7fff392528fe17a3ce.tar.bz2 | |
KVM: x86/xen: Move KVM_XEN_HVM_CONFIG handling to xen.c
This is already more complex than the simple memcpy it originally had.
Move it to xen.c with the rest of the Xen support.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/x86.c | 14 | ||||
| -rw-r--r-- | arch/x86/kvm/xen.c | 18 | ||||
| -rw-r--r-- | arch/x86/kvm/xen.h | 1 |
3 files changed, 20 insertions, 13 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5a41d465134d..673dcc6fde7e 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5627,19 +5627,7 @@ set_pit2_out: r = -EFAULT; if (copy_from_user(&xhc, argp, sizeof(xhc))) goto out; - r = -EINVAL; - if (xhc.flags & ~KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL) - goto out; - /* - * With hypercall interception the kernel generates its own - * hypercall page so it must not be provided. - */ - if ((xhc.flags & KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL) && - (xhc.blob_addr_32 || xhc.blob_addr_64 || - xhc.blob_size_32 || xhc.blob_size_64)) - goto out; - memcpy(&kvm->arch.xen_hvm_config, &xhc, sizeof(xhc)); - r = 0; + r = kvm_xen_hvm_config(kvm, &xhc); break; } case KVM_SET_CLOCK: { diff --git a/arch/x86/kvm/xen.c b/arch/x86/kvm/xen.c index 19bcb2bfba86..b52549fc6dbc 100644 --- a/arch/x86/kvm/xen.c +++ b/arch/x86/kvm/xen.c @@ -79,6 +79,24 @@ int kvm_xen_write_hypercall_page(struct kvm_vcpu *vcpu, u64 data) return 0; } +int kvm_xen_hvm_config(struct kvm *kvm, struct kvm_xen_hvm_config *xhc) +{ + if (xhc->flags & ~KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL) + return -EINVAL; + + /* + * With hypercall interception the kernel generates its own + * hypercall page so it must not be provided. + */ + if ((xhc->flags & KVM_XEN_HVM_CONFIG_INTERCEPT_HCALL) && + (xhc->blob_addr_32 || xhc->blob_addr_64 || + xhc->blob_size_32 || xhc->blob_size_64)) + return -EINVAL; + + memcpy(&kvm->arch.xen_hvm_config, xhc, sizeof(*xhc)); + return 0; +} + static int kvm_xen_hypercall_set_result(struct kvm_vcpu *vcpu, u64 result) { kvm_rax_write(vcpu, result); diff --git a/arch/x86/kvm/xen.h b/arch/x86/kvm/xen.h index 276ed59e476b..28e9c9892628 100644 --- a/arch/x86/kvm/xen.h +++ b/arch/x86/kvm/xen.h @@ -11,6 +11,7 @@ int kvm_xen_hypercall(struct kvm_vcpu *vcpu); int kvm_xen_write_hypercall_page(struct kvm_vcpu *vcpu, u64 data); +int kvm_xen_hvm_config(struct kvm *kvm, struct kvm_xen_hvm_config *xhc); static inline bool kvm_xen_hypercall_enabled(struct kvm *kvm) { |