[Xen-changelog] [qemu-upstream-unstable] xen_pt: Fix passthrough of device with ROM.

[patchbot@xxxxxxx]

commit 90d35066387e1d9c9deeda042c5a907cd57c11cf
Author:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Fri Jan 10 15:56:33 2014 +0000
Commit:     Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
CommitDate: Fri Jan 31 12:38:23 2014 +0000

    xen_pt: Fix passthrough of device with ROM.
    
    QEMU does not need and should not allocate memory for the ROM of a
    passthrough PCI device. So this patch initialize the particular region
    like any other PCI BAR of a passthrough device.
    
    When a guest will access the ROM, Xen will take care of the IO, QEMU
    will not be involved in it.
    
    Xen set a limit of memory available for each guest, allocating memory
    for a ROM can hit this limit.
    
    upstream-commit-id: 794798e36eda77802ce7cc7d7d6b1c65751e8a76
    
    Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
    Reported-and-Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 hw/xen/xen_pt.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index ca2d460..65968df 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -440,8 +440,8 @@ static int xen_pt_register_regions(XenPCIPassthroughState 
*s)
 
         s->bases[PCI_ROM_SLOT].access.maddr = d->rom.base_addr;
 
-        memory_region_init_rom_device(&s->rom, OBJECT(s), NULL, NULL,
-                                      "xen-pci-pt-rom", d->rom.size);
+        memory_region_init_io(&s->rom, OBJECT(s), &ops, &s->dev,
+                              "xen-pci-pt-rom", d->rom.size);
         pci_register_bar(&s->dev, PCI_ROM_SLOT, PCI_BASE_ADDRESS_MEM_PREFETCH,
                          &s->rom);
 
--
generated by git-patchbot for /home/xen/git/qemu-upstream-unstable.git

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