b1c3497e60
Implement support for the HVMOP_set_evtchn_upcall_vector hypercall in order to set the per-vCPU event channel vector callback on Linux and use it in preference of HVM_PARAM_CALLBACK_IRQ. If the per-VCPU vector setup is successful on BSP, use this method for the APs. If not, fallback to the global vector-type callback. Also register callback_irq at per-vCPU event channel setup to trick toolstack to think the domain is enlightened. Suggested-by: "Roger Pau Monné" <roger.pau@citrix.com> Signed-off-by: Jane Malalane <jane.malalane@citrix.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/20220729070416.23306-1-jane.malalane@citrix.com Signed-off-by: Juergen Gross <jgross@suse.com>
69 lines
2.2 KiB
C
69 lines
2.2 KiB
C
/* SPDX-License-Identifier: MIT */
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#ifndef __XEN_PUBLIC_HVM_HVM_OP_H__
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#define __XEN_PUBLIC_HVM_HVM_OP_H__
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#include <xen/interface/xen.h>
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/* Get/set subcommands: the second argument of the hypercall is a
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* pointer to a xen_hvm_param struct. */
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#define HVMOP_set_param 0
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#define HVMOP_get_param 1
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struct xen_hvm_param {
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domid_t domid; /* IN */
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uint32_t index; /* IN */
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uint64_t value; /* IN/OUT */
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};
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DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_param);
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/* Hint from PV drivers for pagetable destruction. */
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#define HVMOP_pagetable_dying 9
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struct xen_hvm_pagetable_dying {
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/* Domain with a pagetable about to be destroyed. */
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domid_t domid;
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/* guest physical address of the toplevel pagetable dying */
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aligned_u64 gpa;
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};
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typedef struct xen_hvm_pagetable_dying xen_hvm_pagetable_dying_t;
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DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_pagetable_dying_t);
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enum hvmmem_type_t {
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HVMMEM_ram_rw, /* Normal read/write guest RAM */
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HVMMEM_ram_ro, /* Read-only; writes are discarded */
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HVMMEM_mmio_dm, /* Reads and write go to the device model */
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};
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#define HVMOP_get_mem_type 15
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/* Return hvmmem_type_t for the specified pfn. */
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struct xen_hvm_get_mem_type {
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/* Domain to be queried. */
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domid_t domid;
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/* OUT variable. */
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uint16_t mem_type;
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uint16_t pad[2]; /* align next field on 8-byte boundary */
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/* IN variable. */
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uint64_t pfn;
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};
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DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_get_mem_type);
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#if defined(__i386__) || defined(__x86_64__)
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/*
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* HVMOP_set_evtchn_upcall_vector: Set a <vector> that should be used for event
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* channel upcalls on the specified <vcpu>. If set,
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* this vector will be used in preference to the
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* domain global callback via (see
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* HVM_PARAM_CALLBACK_IRQ).
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*/
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#define HVMOP_set_evtchn_upcall_vector 23
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struct xen_hvm_evtchn_upcall_vector {
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uint32_t vcpu;
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uint8_t vector;
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};
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typedef struct xen_hvm_evtchn_upcall_vector xen_hvm_evtchn_upcall_vector_t;
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DEFINE_GUEST_HANDLE_STRUCT(xen_hvm_evtchn_upcall_vector_t);
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#endif /* defined(__i386__) || defined(__x86_64__) */
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#endif /* __XEN_PUBLIC_HVM_HVM_OP_H__ */
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