From: Joao Martins <joao.m.martins@xxxxxxxxxx>
This will be used to set up shared info pages etc.
Signed-off-by: Joao Martins <joao.m.martins@xxxxxxxxxx>
Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
---
arch/x86/kvm/x86.c | 20 ++++++++++++++++++++
arch/x86/kvm/xen.c | 24 ++++++++++++++++++++++++
arch/x86/kvm/xen.h | 3 +++
include/linux/kvm_host.h | 30 +++++++++++++++---------------
include/uapi/linux/kvm.h | 11 +++++++++++
5 files changed, 73 insertions(+), 15 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 5394dda3e3b0..975ef5d6dda1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5595,6 +5595,26 @@ long kvm_arch_vm_ioctl(struct file *filp,
r = 0;
break;
}
+ case KVM_XEN_HVM_GET_ATTR: {
+ struct kvm_xen_hvm_attr xha;
+
+ r = -EFAULT;
+ if (copy_from_user(&xha, argp, sizeof(xha)))
+ goto out;
+ r = kvm_xen_hvm_get_attr(kvm, &xha);
+ if (copy_to_user(argp, &xha, sizeof(xha)))
+ goto out;
+ break;
+ }
+ case KVM_XEN_HVM_SET_ATTR: {
+ struct kvm_xen_hvm_attr xha;
+
+ r = -EFAULT;
+ if (copy_from_user(&xha, argp, sizeof(xha)))
+ goto out;
+ r = kvm_xen_hvm_set_attr(kvm, &xha);
+ break;
+ }
case KVM_SET_CLOCK: {
struct kvm_clock_data user_ns;
u64 now_ns;
diff --git a/arch/x86/kvm/xen.c b/arch/x86/kvm/xen.c
index 503935d8212e..c0b2c67e0235 100644
--- a/arch/x86/kvm/xen.c
+++ b/arch/x86/kvm/xen.c
@@ -16,6 +16,30 @@
#include "trace.h"
+int kvm_xen_hvm_set_attr(struct kvm *kvm, struct kvm_xen_hvm_attr *data)
+{
+ int r = -ENOENT;
+
+ switch (data->type) {
+ default:
+ break;
+ }
+
+ return r;
+}
+
+int kvm_xen_hvm_get_attr(struct kvm *kvm, struct kvm_xen_hvm_attr *data)
+{
+ int r = -ENOENT;
+
+ switch (data->type) {
+ default:
+ break;
+ }
+
+ return r;
+}
+
int kvm_xen_hvm_config(struct kvm_vcpu *vcpu, u64 data)
{
struct kvm *kvm = vcpu->kvm;
diff --git a/arch/x86/kvm/xen.h b/arch/x86/kvm/xen.h
index 81e12f716d2e..afc6dad41fb5 100644
--- a/arch/x86/kvm/xen.h
+++ b/arch/x86/kvm/xen.h
@@ -9,8 +9,11 @@
#ifndef __ARCH_X86_KVM_XEN_H__
#define __ARCH_X86_KVM_XEN_H__
+int kvm_xen_hvm_set_attr(struct kvm *kvm, struct kvm_xen_hvm_attr *data);
+int kvm_xen_hvm_get_attr(struct kvm *kvm, struct kvm_xen_hvm_attr *data);
int kvm_xen_hypercall(struct kvm_vcpu *vcpu);
int kvm_xen_hvm_config(struct kvm_vcpu *vcpu, u64 data);
+void kvm_xen_destroy_vm(struct kvm *kvm);
static inline bool kvm_xen_hypercall_enabled(struct kvm *kvm)
{
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 8eb5eb1399f5..846a010f5d5f 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -33,6 +33,21 @@
#include <linux/kvm_types.h>
+struct kvm_host_map {
+ /*
+ * Only valid if the 'pfn' is managed by the host kernel (i.e. There is
+ * a 'struct page' for it. When using mem= kernel parameter some memory
+ * can be used as guest memory but they are not managed by host
+ * kernel).
+ * If 'pfn' is not managed by the host kernel, this field is
+ * initialized to KVM_UNMAPPED_PAGE.
+ */
+ struct page *page;
+ void *hva;
+ kvm_pfn_t pfn;
+ kvm_pfn_t gfn;
+};
+
#include <asm/kvm_host.h>
#ifndef KVM_MAX_VCPU_ID
@@ -225,21 +240,6 @@ enum {
#define KVM_UNMAPPED_PAGE ((void *) 0x500 + POISON_POINTER_DELTA)
-struct kvm_host_map {
- /*
- * Only valid if the 'pfn' is managed by the host kernel (i.e. There is
- * a 'struct page' for it. When using mem= kernel parameter some memory
- * can be used as guest memory but they are not managed by host
- * kernel).
- * If 'pfn' is not managed by the host kernel, this field is
- * initialized to KVM_UNMAPPED_PAGE.
- */
- struct page *page;
- void *hva;
- kvm_pfn_t pfn;
- kvm_pfn_t gfn;
-};
-
/*
* Used to check if the mapping is valid or not. Never use 'kvm_host_map'
* directly to check for that.
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index 6b593a23cd41..3d9ac2f4dc10 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1577,6 +1577,17 @@ struct kvm_pv_cmd {
/* Available with KVM_CAP_X86_MSR_FILTER */
#define KVM_X86_SET_MSR_FILTER _IOW(KVMIO, 0xc6, struct kvm_msr_filter)
+#define KVM_XEN_HVM_GET_ATTR _IOWR(KVMIO, 0xc7, struct kvm_xen_hvm_attr)
+#define KVM_XEN_HVM_SET_ATTR _IOW(KVMIO, 0xc8, struct kvm_xen_hvm_attr)
+
+struct kvm_xen_hvm_attr {
+ __u16 type;
+
+ union {
+ __u64 pad[4];
+ } u;
+};
+
/* Secure Encrypted Virtualization command */
enum sev_cmd_id {
/* Guest initialization commands */
--
2.26.2
