(2010/04/20 20:15), Alexander Graf wrote:
On 20.04.2010, at 13:03, Takuya Yoshikawa wrote:
We can now export the addree of the bitmap created by do_mmap()
to user space. For the sake of this, we introduce a new API:
KVM_SWITCH_DIRTY_LOG: application can use this to trigger the
switch of the bitmaps and get the address of the bitmap which
has been used until now. This reduces the copy of the dirty
bitmap from the kernel.
Signed-off-by: Takuya Yoshikawa<yoshikawa.takuya@xxxxxxxxxxxxx>
Cc: Fernando Luis Vazquez Cao<fernando@xxxxxxxxxxxxx>
---
Documentation/kvm/api.txt | 23 +++++++++++++++++++++++
arch/ia64/kvm/kvm-ia64.c | 19 ++++++++++++++-----
arch/powerpc/kvm/book3s.c | 19 ++++++++++++++-----
arch/x86/kvm/x86.c | 32 ++++++++++++++++++++++++++------
include/linux/kvm.h | 6 ++++--
include/linux/kvm_host.h | 7 ++++---
virt/kvm/kvm_main.c | 41 ++++++++++++++++++++++++++++++++++++-----
7 files changed, 121 insertions(+), 26 deletions(-)
[...]
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 23ea022..9fa6f1e 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -12,7 +12,7 @@
#include<linux/ioctl.h>
#include<asm/kvm.h>
-#define KVM_API_VERSION 12
+#define KVM_API_VERSION 13
Is there a way to keep both interfaces around for some time at least? I'd prefer the API version not to change if not _really_ necessary.
To enable the new dirty mapping you could for example use KVM_CAP_ENABLE_CAP :-).
Thanks, I did not know what is the appropriate way for this kind of change.
I just read the comments in the kvm.h and thought I had to update the number whenever
I added some entries to kvm.h .
Alex
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