[Xen-devel] [PATCH V10 09/14] xen: implement updated XENMEM_add_to_physmap_range ABI

[Konrad Rzeszutek Wilk <konrad@xxxxxxxxxx>]

From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>

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@xxxxxxxxxx>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 arch/x86/xen/mmu.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 1d1fbdb..a31449f 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -2541,14 +2541,16 @@ static int pvh_add_to_xen_p2m(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("d0: Failed to map pfn (0x%lx) to mfn (0x%lx) rc:%d\n",
-                       lpfn, fgmfn, rc);
+       if (rc || err)
+               pr_warn("d0: Failed to map pfn (0x%lx) to mfn (0x%lx) 
rc:%d:%d\n",
+                       lpfn, fgmfn, rc, err);
        return rc;
 }
 
-- 
1.7.7.6


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