If we start Windows 2008 R2 DataCenter with number of cpu less than 8, The system will use APIC Flat Logical destination mode as default configuration, Which has an upper limit of 8 CPUs.
The fault is that VM can not show all processors within Task Manager if we hot-add cpus when the number of cpus in VM extends the limit of 8. If we use cluster destination model, the problem will be solved. Signed-off-by: huangzhichao <[email protected]> Signed-off-by: zhanghailiang <[email protected]> --- hw/i386/acpi-build.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index 10b84d0..fed4501 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -545,7 +545,8 @@ static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm) (1 << ACPI_FADT_F_PROC_C1) | (1 << ACPI_FADT_F_SLP_BUTTON) | (1 << ACPI_FADT_F_RTC_S4)); - fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK); + fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK | + 1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL); } -- 1.7.12.4
