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pc: limit 64 bit hole to 2G by default

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It turns out that some 32 bit windows guests crash
if 64 bit PCI hole size is >2G.
Limit it to 2G for piix and q35 by default.
User may override default 64-bit PCI hole size by
using "pci-hole64-size" property.

Examples:
-global i440FX-pcihost.pci-hole64-size=4G

-global q35-pcihost.pci-hole64-size=4G

Reported-by: Igor Mammedov <imammedo@redhat.com>,
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Message-id: 1375109277-25561-8-git-send-email-imammedo@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Igor Mammedov 2013-07-29 16:47:57 +02:00 • committed by Anthony Liguori
parent e8cd45c78f
commit 3984890181
6 changed files with 211 additions and 58 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/hw/pci-host/q35.h
View file

@ -55,9 +55,11 @@ typedef struct MCHPCIState {
MemoryRegion smram_region;
MemoryRegion pci_hole;
MemoryRegion pci_hole_64bit;
PcPciInfo pci_info;
uint8_t smm_enabled;
ram_addr_t below_4g_mem_size;
ram_addr_t above_4g_mem_size;
uint64_t pci_hole64_size;
PcGuestInfo *guest_info;
} MCHPCIState;