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[Qemu-devel] [PULL 04/15] xen_pt: Present the size of 64 bit BARs correc
From: |
Stefano Stabellini |
Subject: |
[Qemu-devel] [PULL 04/15] xen_pt: Present the size of 64 bit BARs correctly |
Date: |
Mon, 21 May 2018 12:34:53 -0700 |
From: Ross Lagerwall <address@hidden>
The full size of the BAR is stored in the lower PCIIORegion.size. The
upper PCIIORegion.size is 0. Calculate the size of the upper half
correctly from the lower half otherwise the size read by the guest will
be incorrect.
Signed-off-by: Ross Lagerwall <address@hidden>
Acked-by: Anthony PERARD <address@hidden>
Signed-off-by: Stefano Stabellini <address@hidden>
---
hw/xen/xen_pt_config_init.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/xen/xen_pt_config_init.c b/hw/xen/xen_pt_config_init.c
index a3ce33e..aee31c6 100644
--- a/hw/xen/xen_pt_config_init.c
+++ b/hw/xen/xen_pt_config_init.c
@@ -504,6 +504,8 @@ static int xen_pt_bar_reg_write(XenPCIPassthroughState *s,
XenPTReg *cfg_entry,
bar_ro_mask = XEN_PT_BAR_IO_RO_MASK | (r_size - 1);
break;
case XEN_PT_BAR_FLAG_UPPER:
+ assert(index > 0);
+ r_size = d->io_regions[index - 1].size >> 32;
bar_emu_mask = XEN_PT_BAR_ALLF;
bar_ro_mask = r_size ? r_size - 1 : 0;
break;
--
1.9.1
- [Qemu-devel] [PULL 00/15] xen-20180521-tag, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 04/15] xen_pt: Present the size of 64 bit BARs correctly,
Stefano Stabellini <=
- [Qemu-devel] [PULL 01/15] xen-pvdevice: Introduce a simplistic xen-pvdevice save state, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 11/15] xen_backend: add an emulation of grant copy, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 05/15] xen-hvm: create separate function for ioreq server initialization, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 03/15] configure: Add explanation for --enable-xen-pci-passthrough, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 08/15] xen_backend: add grant table helpers, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 10/15] xen: remove other open-coded use of libxengnttab, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 09/15] xen_disk: remove open-coded use of libxengnttab, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 12/15] xen_disk: remove use of grant map/unmap, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 07/15] xen: add a meaningful declaration of grant_copy_segment into xen_common.h, Stefano Stabellini, 2018/05/21
- [Qemu-devel] [PULL 13/15] xen_backend: make the xen_feature_grant_copy flag private, Stefano Stabellini, 2018/05/21