Re: [PATCH 3/4] Add the code to send the consigned time from the host to the guest
On 02/06/2013 03:18 PM, Rik van Riel wrote:
On 02/05/2013 04:49 PM, Michael Wolf wrote:
Change the paravirt calls that retrieve the steal-time information
from the host. Add to it getting the consigned value as well as
the steal time.
Signed-off-by: Michael Wolf m...@linux.vnet.ibm.com
diff --git a/arch/x86/include/uapi/asm/kvm_para.h
b/arch/x86/include/uapi/asm/kvm_para.h
index 06fdbd9..55d617f 100644
--- a/arch/x86/include/uapi/asm/kvm_para.h
+++ b/arch/x86/include/uapi/asm/kvm_para.h
@@ -42,9 +42,10 @@
struct kvm_steal_time {
__u64 steal;
+__u64 consigned;
__u32 version;
__u32 flags;
-__u32 pad[12];
+__u32 pad[10];
};
The function kvm_register_steal_time passes the address of such
a structure to the host kernel, which then does something with
it.
Could running a guest with the above patch, on top of a host
with the old code, result in the values for version and
flags being written into consigned?
yes, good point.
Could that result in confusing the guest kernel to no end,
and generally breaking things?
Ok I will move the consigned field to be after the flags.
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 3/4] Add the code to send the consigned time from the host to the guest
On 02/05/2013 04:49 PM, Michael Wolf wrote:
Change the paravirt calls that retrieve the steal-time information
from the host. Add to it getting the consigned value as well as
the steal time.
Signed-off-by: Michael Wolf m...@linux.vnet.ibm.com
diff --git a/arch/x86/include/uapi/asm/kvm_para.h
b/arch/x86/include/uapi/asm/kvm_para.h
index 06fdbd9..55d617f 100644
--- a/arch/x86/include/uapi/asm/kvm_para.h
+++ b/arch/x86/include/uapi/asm/kvm_para.h
@@ -42,9 +42,10 @@
struct kvm_steal_time {
__u64 steal;
+ __u64 consigned;
__u32 version;
__u32 flags;
- __u32 pad[12];
+ __u32 pad[10];
};
The function kvm_register_steal_time passes the address of such
a structure to the host kernel, which then does something with
it.
Could running a guest with the above patch, on top of a host
with the old code, result in the values for version and
flags being written into consigned?
Could that result in confusing the guest kernel to no end,
and generally breaking things?
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
