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xen: implement updated XENMEM_add_to_physmap_range ABI 

Allows for more fine grained error reporting. Only used by PVH and
ARM both of which are marked EXPERIMENTAL precisely because the ABI
is not yet stable

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
[v1: Rebased without PVH patches]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
hifive-unleashed-5.1
Ian Campbell 2013-02-19 22:00:58 -05:00 committed by Konrad Rzeszutek Wilk
parent dacd45f4e7
commit 07d0c94366
2 changed files with 11 additions and 3 deletions
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8
arch/arm/xen/enlighten.c
View File

@ -59,14 +59,16 @@ static int map_foreign_page(unsigned long lpfn, unsigned long fgmfn,
};
xen_ulong_t idx = fgmfn;
xen_pfn_t gpfn = lpfn;
int err = 0;
set_xen_guest_handle(xatp.idxs, &idx);
set_xen_guest_handle(xatp.gpfns, &gpfn);
set_xen_guest_handle(xatp.errs, &err);
rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap_range, &xatp);
if (rc) {
pr_warn("Failed to map pfn to mfn rc:%d pfn:%lx mfn:%lx\n",
rc, lpfn, fgmfn);
if (rc || err) {
pr_warn("Failed to map pfn to mfn rc:%d:%d pfn:%lx mfn:%lx\n",
rc, err, lpfn, fgmfn);
return 1;
}
return 0;

6
include/xen/interface/memory.h
View File

@ -190,6 +190,7 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap);
#define XENMEM_add_to_physmap_range 23
struct xen_add_to_physmap_range {
/* IN */
/* Which domain to change the mapping for. */
domid_t domid;
uint16_t space; /* => enum phys_map_space */
@ -203,6 +204,11 @@ struct xen_add_to_physmap_range {
/* GPFN in domid where the source mapping page should appear. */
GUEST_HANDLE(xen_pfn_t) gpfns;
/* OUT */
/* Per index error code. */
GUEST_HANDLE(int) errs;
};
DEFINE_GUEST_HANDLE_STRUCT(xen_add_to_physmap_range);