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xen-hvm: Fix xen_hvm_init() to adjust pc memory layout

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This is just below_4g_mem_size and above_4g_mem_size which is used later in QEMU.

Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Don Slutz <dslutz@verizon.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Don Slutz 2014-06-19 21:40:24 -04:00 committed by Michael S. Tsirkin
parent 20de98aff5
commit 3c2a96699e
5 changed files with 49 additions and 41 deletions
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31
hw/i386/pc_piix.c
View file

@ -99,21 +99,6 @@ static void pc_init1(MachineState *machine,
FWCfgState *fw_cfg = NULL;
PcGuestInfo *guest_info;
if (xen_enabled() && xen_hvm_init(&ram_memory) != 0) {
fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
exit(1);
}
icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
object_property_add_child(qdev_get_machine(), "icc-bridge",
OBJECT(icc_bridge), NULL);
pc_cpus_init(machine->cpu_model, icc_bridge);
if (kvm_enabled() && kvmclock_enabled) {
kvmclock_create();
}
/* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory).
* If it doesn't, we need to split it in chunks below and above 4G.
* In any case, try to make sure that guest addresses aligned at
@ -130,6 +115,22 @@ static void pc_init1(MachineState *machine,
below_4g_mem_size = machine->ram_size;
}
if (xen_enabled() && xen_hvm_init(&below_4g_mem_size, &above_4g_mem_size,
&ram_memory) != 0) {
fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
exit(1);
}
icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
object_property_add_child(qdev_get_machine(), "icc-bridge",
OBJECT(icc_bridge), NULL);
pc_cpus_init(machine->cpu_model, icc_bridge);
if (kvm_enabled() && kvmclock_enabled) {
kvmclock_create();
}
if (pci_enabled) {
pci_memory = g_new(MemoryRegion, 1);
memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);

29
hw/i386/pc_q35.c
View file

@ -86,20 +86,6 @@ static void pc_q35_init(MachineState *machine)
DeviceState *icc_bridge;
PcGuestInfo *guest_info;
if (xen_enabled() && xen_hvm_init(&ram_memory) != 0) {
fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
exit(1);
}
icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
object_property_add_child(qdev_get_machine(), "icc-bridge",
OBJECT(icc_bridge), NULL);
pc_cpus_init(machine->cpu_model, icc_bridge);
pc_acpi_init("q35-acpi-dsdt.aml");
kvmclock_create();
/* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
* and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
* also known as MMCFG).
@ -118,6 +104,21 @@ static void pc_q35_init(MachineState *machine)
below_4g_mem_size = machine->ram_size;
}
if (xen_enabled() && xen_hvm_init(&below_4g_mem_size, &above_4g_mem_size,
&ram_memory) != 0) {
fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
exit(1);
}
icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
object_property_add_child(qdev_get_machine(), "icc-bridge",
OBJECT(icc_bridge), NULL);
pc_cpus_init(machine->cpu_model, icc_bridge);
pc_acpi_init("q35-acpi-dsdt.aml");
kvmclock_create();
/* pci enabled */
if (pci_enabled) {
pci_memory = g_new(MemoryRegion, 1);

3
include/hw/xen/xen.h
View file

@ -37,10 +37,11 @@ void xen_cmos_set_s3_resume(void *opaque, int irq, int level);
qemu_irq *xen_interrupt_controller_init(void);
int xen_init(MachineClass *mc);
int xen_hvm_init(MemoryRegion **ram_memory);
void xenstore_store_pv_console_info(int i, struct CharDriverState *chr);
#if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY)
int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size,
MemoryRegion **ram_memory);
void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size,
struct MemoryRegion *mr);
void xen_modified_memory(ram_addr_t start, ram_addr_t length);

3
xen-hvm-stub.c
View file

@ -51,7 +51,8 @@ void xen_modified_memory(ram_addr_t start, ram_addr_t length)
{
}
int xen_hvm_init(MemoryRegion **ram_memory)
int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size,
MemoryRegion **ram_memory)
{
return 0;
}

24
xen-hvm.c
View file

@ -155,10 +155,11 @@ qemu_irq *xen_interrupt_controller_init(void)
/* Memory Ops */
static void xen_ram_init(ram_addr_t ram_size, MemoryRegion **ram_memory_p)
static void xen_ram_init(ram_addr_t *below_4g_mem_size,
ram_addr_t *above_4g_mem_size,
ram_addr_t ram_size, MemoryRegion **ram_memory_p)
{
MemoryRegion *sysmem = get_system_memory();
ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
ram_addr_t block_len;
block_len = ram_size;
@ -173,10 +174,11 @@ static void xen_ram_init(ram_addr_t ram_size, MemoryRegion **ram_memory_p)
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;
*above_4g_mem_size = ram_size - HVM_BELOW_4G_RAM_END;
*below_4g_mem_size = HVM_BELOW_4G_RAM_END;
} else {
below_4g_mem_size = ram_size;
*above_4g_mem_size = 0;
*below_4g_mem_size = ram_size;
}
memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
@ -189,12 +191,13 @@ static void xen_ram_init(ram_addr_t ram_size, MemoryRegion **ram_memory_p)
* the Options ROM, so it is registered here as RAM.
*/
memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
&ram_memory, 0xc0000, below_4g_mem_size - 0xc0000);
&ram_memory, 0xc0000,
*below_4g_mem_size - 0xc0000);
memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
if (above_4g_mem_size > 0) {
if (*above_4g_mem_size > 0) {
memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
&ram_memory, 0x100000000ULL,
above_4g_mem_size);
*above_4g_mem_size);
memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
}
}
@ -958,7 +961,8 @@ static void xen_wakeup_notifier(Notifier *notifier, void *data)
xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
}
int xen_hvm_init(MemoryRegion **ram_memory)
int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size,
MemoryRegion **ram_memory)
{
int i, rc;
unsigned long ioreq_pfn;
@ -1036,7 +1040,7 @@ int xen_hvm_init(MemoryRegion **ram_memory)
/* Init RAM management */
xen_map_cache_init(xen_phys_offset_to_gaddr, state);
xen_ram_init(ram_size, ram_memory);
xen_ram_init(below_4g_mem_size, above_4g_mem_size, ram_size, ram_memory);
qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);