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qemu: enable PV EOI for qemu 1.3

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Enable KVM PV EOI by default. You can still disable it with
-kvm_pv_eoi cpu flag. To avoid breaking cross-version migration,
enable only for qemu 1.3 (or in the future, newer) machine type.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2012-10-18 00:15:48 +02:00
parent 05c0621e64
commit dc59944bc9
3 changed files with 30 additions and 14 deletions
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9
hw/pc_piix.c
View file

@ -43,6 +43,7 @@
#include "xen.h"
#include "memory.h"
#include "exec-memory.h"
#include "cpu.h"
#ifdef CONFIG_XEN
# include <xen/hvm/hvm_info_table.h>
#endif
@ -302,6 +303,12 @@ static void pc_init_pci(QEMUMachineInitArgs *args)
initrd_filename, cpu_model, 1, 1);
}
static void pc_init_pci_1_3(QEMUMachineInitArgs *args)
{
enable_kvm_pv_eoi();
pc_init_pci(args);
}
static void pc_init_pci_no_kvmclock(QEMUMachineInitArgs *args)
{
ram_addr_t ram_size = args->ram_size;
@ -349,7 +356,7 @@ static QEMUMachine pc_machine_v1_3 = {
.name = "pc-1.3",
.alias = "pc",
.desc = "Standard PC",
.init = pc_init_pci,
.init = pc_init_pci_1_3,
.max_cpus = 255,
.is_default = 1,
};