Commit-ID: 538151d4e8805cec65ab99a1cfd78bfede4aeb07 Gitweb: http://git.kernel.org/tip/538151d4e8805cec65ab99a1cfd78bfede4aeb07 Author: Cyrill Gorcunov <gorcunov@xxxxxxxxx> AuthorDate: Sun, 7 Aug 2011 13:40:42 +0400 Committer: Pekka Enberg <penberg@xxxxxxxxxx> CommitDate: Sun, 7 Aug 2011 21:04:55 +0300 kvm tools: Support xAPIC Since we rely on in-kernel kvm-apic implementation it's fine to set apic version as xAPIC which allows kernel to run in bigsmp mode. Without it the kernel will not support more than 8 cpus, complaining as | [ 0.362000] Initializing CPU#8 | [ 0.363000] ------------[ cut here ]------------ | [ 0.363000] WARNING: at arch/x86/kernel/apic/apic.c:1238 setup_local_APIC+0xeb/0x2e1() | [ 0.364000] Modules linked in: | [ 0.364000] Pid: 0, comm: kworker/0:1 Not tainted 3.0.0+ #70 | [ 0.364000] Call Trace: | [ 0.364000] [<c1060c7e>] warn_slowpath_common+0x63/0x78 | [ 0.365000] [<c16612a8>] ? setup_local_APIC+0xeb/0x2e1 | [ 0.365000] [<c1060ca2>] warn_slowpath_null+0xf/0x13 | [ 0.365000] [<c16612a8>] setup_local_APIC+0xeb/0x2e1 | [ 0.366000] [<c165c684>] ? fpu_init+0x6b/0x88 | [ 0.366000] [<c1047fd7>] ? default_get_apic_id+0x17/0x32 | [ 0.366000] [<c16607d3>] start_secondary+0xab/0x18e | [ 0.367000] ---[ end trace 4eaa2a86a8e2da22 ]--- Note the kernel needs "apic=bigsmp" parameter passed to enable physical destination mode. Reported-by: Asias He <asias.hejun@xxxxxxxxx> Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx> Signed-off-by: Pekka Enberg <penberg@xxxxxxxxxx> --- tools/kvm/include/kvm/apic.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/tools/kvm/include/kvm/apic.h b/tools/kvm/include/kvm/apic.h index a13bb3e..2129997 100644 --- a/tools/kvm/include/kvm/apic.h +++ b/tools/kvm/include/kvm/apic.h @@ -12,6 +12,6 @@ #define APIC_ADDR(apic) (APIC_DEFAULT_PHYS_BASE + apic * APIC_BASE_ADDR_STEP) #define IOAPIC_ADDR(ioapic) (IO_APIC_DEFAULT_PHYS_BASE + ioapic * IOAPIC_BASE_ADDR_STEP) -#define KVM_APIC_VERSION 0x11 +#define KVM_APIC_VERSION 0x14 /* xAPIC */ #endif /* KVM_APIC_H_ */ -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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