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x86/hvm: provide XEN_DMOP_pin_memory_cacheattr
Provide XEN_DMOP_pin_memory_cacheattr to allow a deprivileged QEMU to pin the caching type of RAM after moving the VRAM. It is equivalent to XEN_DOMCTL_pin_memory_cacheattr. Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com> Reviewed-by: Paul Durrant <paul.durrant@citrix.com> Reviewed-by: Jan Beulich <jbeulich@suse.com>
This commit is contained in:
Ross Lagerwall authored and 
Jan Beulich committed
1 parent
6606cf3e2a
commit
642123c512
3 files changed
+33
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@@ -20,6 +20,7 @@
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#include <xen/sched.h>
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#include <asm/hap.h>
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#include <asm/hvm/cacheattr.h>
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#include <asm/hvm/ioreq.h>
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#include <asm/shadow.h>
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@@ -671,6 +672,22 @@ static int dm_op(const struct dmop_args *op_args)
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break;
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}
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case XEN_DMOP_pin_memory_cacheattr:
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{
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const struct xen_dm_op_pin_memory_cacheattr *data =
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&op.u.pin_memory_cacheattr;
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if ( data->pad )
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{
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rc = -EINVAL;
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break;
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}
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rc = hvm_set_mem_pinned_cacheattr(d, data->start, data->end,
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data->type);
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break;
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}
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default:
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rc = -EOPNOTSUPP;
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break;
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@@ -701,6 +718,7 @@ CHECK_dm_op_inject_event;
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CHECK_dm_op_inject_msi;
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CHECK_dm_op_remote_shutdown;
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CHECK_dm_op_relocate_memory;
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CHECK_dm_op_pin_memory_cacheattr;
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int compat_dm_op(domid_t domid,
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unsigned int nr_bufs,
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@@ -386,6 +386,19 @@ struct xen_dm_op_relocate_memory {
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uint64_aligned_t dst_gfn;
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};
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/*
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* XEN_DMOP_pin_memory_cacheattr : Pin caching type of RAM space.
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* Identical to XEN_DOMCTL_pin_mem_cacheattr.
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*/
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#define XEN_DMOP_pin_memory_cacheattr 18
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struct xen_dm_op_pin_memory_cacheattr {
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uint64_aligned_t start; /* Start gfn. */
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uint64_aligned_t end; /* End gfn. */
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uint32_t type; /* XEN_DOMCTL_MEM_CACHEATTR_* */
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uint32_t pad;
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};
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struct xen_dm_op {
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uint32_t op;
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uint32_t pad;
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@@ -408,6 +421,7 @@ struct xen_dm_op {
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map_mem_type_to_ioreq_server;
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struct xen_dm_op_remote_shutdown remote_shutdown;
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struct xen_dm_op_relocate_memory relocate_memory;
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struct xen_dm_op_pin_memory_cacheattr pin_memory_cacheattr;
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} u;
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};
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@@ -65,6 +65,7 @@
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? dm_op_inject_msi hvm/dm_op.h
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? dm_op_ioreq_server_range hvm/dm_op.h
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? dm_op_modified_memory hvm/dm_op.h
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? dm_op_pin_memory_cacheattr hvm/dm_op.h
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? dm_op_remote_shutdown hvm/dm_op.h
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? dm_op_set_ioreq_server_state hvm/dm_op.h
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? dm_op_set_isa_irq_level hvm/dm_op.h
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