From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: include files for kvmclock Date: Tue, 06 Nov 2007 14:50:07 -0800 Message-ID: <4730EF9F.3020803@goop.org> References: <11943875362987-git-send-email-gcosta@redhat.com> <11943875433821-git-send-email-gcosta@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org To: Glauber de Oliveira Costa Return-path: In-Reply-To: <11943875433821-git-send-email-gcosta-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Glauber de Oliveira Costa wrote: > This patch introduces the include files for kvm clock. > They'll be needed for both guest and host part. > > Signed-off-by: Glauber de Oliveira Costa > --- > include/asm-x86/kvm_para.h | 23 +++++++++++++++++++++++ > include/linux/kvm.h | 1 + > include/linux/kvm_para.h | 20 ++++++++++++++++++++ > 3 files changed, 44 insertions(+), 0 deletions(-) > > diff --git a/include/asm-x86/kvm_para.h b/include/asm-x86/kvm_para.h > index c6f3fd8..af9fb75 100644 > --- a/include/asm-x86/kvm_para.h > +++ b/include/asm-x86/kvm_para.h > @@ -10,15 +10,38 @@ > * paravirtualization, the appropriate feature bit should be checked. > */ > #define KVM_CPUID_FEATURES 0x40000001 > +#define KVM_FEATURE_CLOCKEVENTS 0 > +#define KVM_FEATURE_CLOCKSOURCE 1 > + > > #ifdef __KERNEL__ > #include > +extern void kvmclock_init(void); > + > +union kvm_hv_clock { > Why two copies of this structure? > + struct { > + u64 tsc_mult; > + u64 now_ns; > + /* That's the wall clock, not the water closet */ > + u64 wc_sec; > + u64 wc_nsec; > + u64 last_tsc; > + /* At first, we could use the tsc value as a marker, but Jeremy > + * well noted that it will cause us locking problems in 32-bit > + * sys, so we have a special version field */ > + u32 version; > + }; > + char page_align[PAGE_SIZE]; > +}; > + > [...] > + > +union kvm_hv_clock { > + struct { > + u64 tsc_mult; > + u64 now_ns; > + /* That's the wall clock, not the water closet */ > + u64 wc_sec; > + u64 wc_nsec; > + u64 last_tsc; > + /* At first, we could use the tsc value as a marker, but Jeremy > + * well noted that it will cause us locking problems in 32-bit > + * sys, so we have a special version field */ > + u32 version; > + }; > + char page_align[PAGE_SIZE]; > +}; > + > /* > * hypercalls use architecture specific > */ > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/