From 65d0cf0be79feebeb19e7626fd3ed41ae73f642d Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Mon, 10 Aug 2015 16:34:34 -0400 Subject: xen/PMU: Initialization code for Xen PMU Map shared data structure that will hold CPU registers, VPMU context, V/PCPU IDs of the CPU interrupted by PMU interrupt. Hypervisor fills this information in its handler and passes it to the guest for further processing. Set up PMU VIRQ. Now that perf infrastructure will assume that PMU is available on a PV guest we need to be careful and make sure that accesses via RDPMC instruction don't cause fatal traps by the hypervisor. Provide a nop RDPMC handler. For the same reason avoid issuing a warning on a write to APIC's LVTPC. Both of these will be made functional in later patches. Signed-off-by: Boris Ostrovsky Reviewed-by: David Vrabel Signed-off-by: David Vrabel --- include/xen/interface/xen.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/xen/interface/xen.h') diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h index e9d4501d1f5e..167071c290b3 100644 --- a/include/xen/interface/xen.h +++ b/include/xen/interface/xen.h @@ -113,6 +113,7 @@ #define VIRQ_MEM_EVENT 10 /* G. (DOM0) A memory event has occured */ #define VIRQ_XC_RESERVED 11 /* G. Reserved for XenClient */ #define VIRQ_ENOMEM 12 /* G. (DOM0) Low on heap memory */ +#define VIRQ_XENPMU 13 /* PMC interrupt */ /* Architecture-specific VIRQ definitions. */ #define VIRQ_ARCH_0 16 -- cgit v1.2.3