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xen: start PCI hole at 0xe0000000 (same as pc_init1 and qemu-xen-traditional) 

We are currently setting the PCI hole to start at HVM_BELOW_4G_RAM_END,
that is 0xf0000000.
Start the PCI hole at 0xe0000000 instead, that is the same value used by
pc_init1 and qemu-xen-traditional.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
CC: qemu-stable@nongnu.org
This commit is contained in:
Stefano Stabellini 2013-06-03 15:37:45 +00:00
parent 58ee9b0ae0
commit 9f24a8030a
3 changed files with 12 additions and 9 deletions
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6
hw/i386/pc_piix.c
View File

@ -102,9 +102,9 @@ static void pc_init1(MemoryRegion *system_memory,
kvmclock_create();
}
if (ram_size >= 0xe0000000 ) {
above_4g_mem_size = ram_size - 0xe0000000;
below_4g_mem_size = 0xe0000000;
if (ram_size >= QEMU_BELOW_4G_RAM_END ) {
above_4g_mem_size = ram_size - QEMU_BELOW_4G_RAM_END;
below_4g_mem_size = QEMU_BELOW_4G_RAM_END;
} else {
above_4g_mem_size = 0;
below_4g_mem_size = ram_size;

3
include/hw/i386/pc.h
View File

@ -77,6 +77,9 @@ extern int fd_bootchk;
void pc_register_ferr_irq(qemu_irq irq);
void pc_acpi_smi_interrupt(void *opaque, int irq, int level);
#define QEMU_BELOW_4G_RAM_END 0xe0000000
#define QEMU_BELOW_4G_MMIO_LENGTH ((1ULL << 32) - QEMU_BELOW_4G_RAM_END)
void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge);
void pc_hot_add_cpu(const int64_t id, Error **errp);
void pc_acpi_init(const char *default_dsdt);

12
xen-all.c
View File

@ -161,18 +161,18 @@ static void xen_ram_init(ram_addr_t ram_size)
ram_addr_t block_len;
block_len = ram_size;
if (ram_size >= HVM_BELOW_4G_RAM_END) {
if (ram_size >= QEMU_BELOW_4G_RAM_END) {
/* Xen does not allocate the memory continuously, and keep a hole at
* HVM_BELOW_4G_MMIO_START of HVM_BELOW_4G_MMIO_LENGTH
* QEMU_BELOW_4G_RAM_END of QEMU_BELOW_4G_MMIO_LENGTH
*/
block_len += HVM_BELOW_4G_MMIO_LENGTH;
block_len += QEMU_BELOW_4G_MMIO_LENGTH;
}
memory_region_init_ram(&ram_memory, "xen.ram", block_len);
vmstate_register_ram_global(&ram_memory);
if (ram_size >= HVM_BELOW_4G_RAM_END) {
above_4g_mem_size = ram_size - HVM_BELOW_4G_RAM_END;
below_4g_mem_size = HVM_BELOW_4G_RAM_END;
if (ram_size >= QEMU_BELOW_4G_RAM_END) {
above_4g_mem_size = ram_size - QEMU_BELOW_4G_RAM_END;
below_4g_mem_size = QEMU_BELOW_4G_RAM_END;
} else {
below_4g_mem_size = ram_size;
}