On 2014-05-13 09:09, Li, Zhen-Hua wrote: > From: "Li, ZhenHua" <zhen-h...@hp.com> > > These series patches are trying to make Qemu support more than 255 CPUs. > The max cpu number changed to 4096. > > Support more than 255 cpus: ACPI and APIC defines > Support more than 255 cpus: max_cpus to 4096 > Support more than 255 cpus: max cpumask bit to 4096 > Support more than 255 cpus: runtime chec > > include/hw/acpi/cpu_hotplug_defs.h | 4 ++-- > include/hw/i386/apic_internal.h | 2 +- > include/hw/i386/pc.h | 2 +- > include/sysemu/sysemu.h | 2 +- > hw/i386/acpi-build.c | 8 ++++----
Don't we need x2APIC support to provide >255 CPUs? Where so you enforce this, i.e. keep the restriction to 255 CPUs when we are not in KVM mode with in-kernel APIC (the emulate APIC lacks x2APIC mode, unfortunately)? But, wait, KVM only supports up to 255 VCPUs. So what are you targeting at? Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux
