@@ -106,7 +106,16 @@ PcGuestInfo *pc_guest_info_init(ram_addr_t below_4g_mem_size,
#define PCI_HOST_PROP_PCI_HOLE64_START "pci-hole64-start"
#define PCI_HOST_PROP_PCI_HOLE64_END "pci-hole64-end"
#define PCI_HOST_PROP_PCI_HOLE64_SIZE "pci-hole64-size"
-#define DEFAULT_PCI_HOLE64_SIZE (1ULL << 31)
+#define DEFAULT_PCI_HOLE64_SIZE (~0x0ULL)
+
+static inline uint64_t pci_host_get_hole64_size(uint64_t pci_hole64_size)
+{
+ if (pci_hole64_size == DEFAULT_PCI_HOLE64_SIZE) {
+ return 1ULL << 62;
+ } else {
+ return pci_hole64_size;
+ }
+}
void pc_init_pci64_hole(PcPciInfo *pci_info, uint64_t pci_hole64_start,
uint64_t pci_hole64_size);
@@ -320,6 +320,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
PCII440FXState *f;
unsigned i;
I440FXState *i440fx;
+ uint64_t pci_hole64_size;
dev = qdev_create(NULL, TYPE_I440FX_PCI_HOST_BRIDGE);
s = PCI_HOST_BRIDGE(dev);
@@ -351,13 +352,15 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
pci_hole_start, pci_hole_size);
memory_region_add_subregion(f->system_memory, pci_hole_start, &f->pci_hole);
+ pci_hole64_size = pci_host_get_hole64_size(i440fx->pci_hole64_size);
+
pc_init_pci64_hole(&i440fx->pci_info, 0x100000000ULL + above_4g_mem_size,
- i440fx->pci_hole64_size);
+ pci_hole64_size);
memory_region_init_alias(&f->pci_hole_64bit, OBJECT(d), "pci-hole64",
f->pci_address_space,
i440fx->pci_info.w64.begin,
- i440fx->pci_hole64_size);
- if (i440fx->pci_hole64_size) {
+ pci_hole64_size);
+ if (pci_hole64_size) {
memory_region_add_subregion(f->system_memory,
i440fx->pci_info.w64.begin,
&f->pci_hole_64bit);
@@ -320,6 +320,7 @@ static int mch_init(PCIDevice *d)
{
int i;
MCHPCIState *mch = MCH_PCI_DEVICE(d);
+ uint64_t pci_hole64_size;
/* setup pci memory regions */
memory_region_init_alias(&mch->pci_hole, OBJECT(mch), "pci-hole",
@@ -329,13 +330,14 @@ static int mch_init(PCIDevice *d)
memory_region_add_subregion(mch->system_memory, mch->below_4g_mem_size,
&mch->pci_hole);
+ pci_hole64_size = pci_host_get_hole64_size(mch->pci_hole64_size);
pc_init_pci64_hole(&mch->pci_info, 0x100000000ULL + mch->above_4g_mem_size,
- mch->pci_hole64_size);
+ pci_hole64_size);
memory_region_init_alias(&mch->pci_hole_64bit, OBJECT(mch), "pci-hole64",
mch->pci_address_space,
mch->pci_info.w64.begin,
- mch->pci_hole64_size);
- if (mch->pci_hole64_size) {
+ pci_hole64_size);
+ if (pci_hole64_size) {
memory_region_add_subregion(mch->system_memory,
mch->pci_info.w64.begin,
&mch->pci_hole_64bit);
commit 398489018183d613306ab022653552247d93919f pc: limit 64 bit hole to 2G by default introduced a way for management to control the window allocated to the 64 bit PCI hole. This is useful, but existing management tools do not know how to set this property. As a result, e.g. specifying a large ivshmem device with size > 4G is broken by default. For example this configuration no longer works: -device ivshmem,size=4294967296,chardev=cfoo -chardev socket,path=/tmp/sock,id=cfoo,server,nowait Fix this by detecting that hole size was not specified and defaulting to the backwards-compatible value of 1 << 62. Cc: qemu-stable@nongnu.org Cc: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- include/hw/i386/pc.h | 11 ++++++++++- hw/pci-host/piix.c | 9 ++++++--- hw/pci-host/q35.c | 8 +++++--- 3 files changed, 21 insertions(+), 7 deletions(-)