From mboxrd@z Thu Jan 1 00:00:00 1970 From: Glauber de Oliveira Costa Subject: [PATCH 1/3] include files for kvmclock Date: Thu, 8 Nov 2007 20:39:21 -0200 Message-ID: <11945615703593-git-send-email-gcosta@redhat.com> References: <11945615632624-git-send-email-gcosta@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: jeremy-TSDbQ3PG+2Y@public.gmane.org, hollisb-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org, kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org, Glauber de Oliveira Costa To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: In-Reply-To: <11945615632624-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 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 | 25 +++++++++++++++++++++++++ include/linux/kvm.h | 1 + include/linux/kvm_para.h | 2 ++ 3 files changed, 28 insertions(+), 0 deletions(-) diff --git a/include/asm-x86/kvm_para.h b/include/asm-x86/kvm_para.h index c6f3fd8..0f6b813 100644 --- a/include/asm-x86/kvm_para.h +++ b/include/asm-x86/kvm_para.h @@ -10,15 +10,40 @@ * paravirtualization, the appropriate feature bit should be checked. */ #define KVM_CPUID_FEATURES 0x40000001 +#define KVM_FEATURE_CLOCKSOURCE 0 #ifdef __KERNEL__ #include +extern void kvmclock_init(void); + +/* + * Guest has page alignment and padding requirements. At the host, it will + * only lead to wasted space at the vcpu struct. For this reason, the struct + * is not anonymous + */ +union kvm_hv_clock { + struct kvm_hv_clock_s { + u64 tsc_mult; + u64 now_ns; + /* That's the wall clock, not the water closet */ + u64 wc_sec; + 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; + } fields; + char page_align[PAGE_SIZE]; +}; + /* This instruction is vmcall. On non-VT architectures, it will generate a * trap that we will then rewrite to the appropriate instruction. */ #define KVM_HYPERCALL ".byte 0x0f,0x01,0xc1" +#define KVM_HCALL_REGISTER_CLOCK 1 + /* For KVM hypercalls, a three-byte sequence of either the vmrun or the vmmrun * instruction. The hypervisor may replace it with something else but only the * instructions are guaranteed to be supported. diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 71d33d6..9862241 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -359,6 +359,7 @@ struct kvm_signal_mask { #define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2 #define KVM_CAP_USER_MEMORY 3 #define KVM_CAP_SET_TSS_ADDR 4 +#define KVM_CAP_CLOCKSOURCE 5 /* * ioctls for VM fds diff --git a/include/linux/kvm_para.h b/include/linux/kvm_para.h index e4db25f..094efc7 100644 --- a/include/linux/kvm_para.h +++ b/include/linux/kvm_para.h @@ -11,6 +11,8 @@ /* Return values for hypercalls */ #define KVM_ENOSYS 1000 +#define KVM_EINVAL 1019 +#define KVM_ENODEV 1022 #ifdef __KERNEL__ /* -- 1.5.0.6 ------------------------------------------------------------------------- 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/