On 04/17/2010 10:13 PM, Ingo Molnar wrote:
* Avi Kivity<avi@xxxxxxxxxx> wrote:
On 04/16/2010 10:34 AM, Zhang, Yanmin wrote:
Below is the kernel patch to enable perf to collect guest os statistics.
Joerg,
Would you like to add support on svm? I don't know the exact point to trigger
NMI to host with svm.
See below code with vmx:
+ kvm_before_handle_nmi(&vmx->vcpu);
asm("int $2");
+ kvm_after_handle_nmi(&vmx->vcpu);
Signed-off-by: Zhang Yanmin<yanmin_zhang@xxxxxxxxxxxxxxx>
Can you please split it further?
Patch 1 introduces perf_register_guest_info_callbacks() and related. Ingo
can merge this into a branch in tip.git. Patch 2 is just the kvm bits, I'll
apply that after merging the branch with patch 1. Patch 3 adds the
tools/perf changes.
This way perf development can continue on tip.git, and kvm development can
continue on kvm.git, without the code bases diverging and requiring a merge
later.
I'd like to pull the KVM bits from you into perf - so that there's a testable
form of the changes. We can do that via a branch that has 1-2 changes, plus
minimal conflicts down the line, right?
We can try doing this (currently we don't, but this is simple enough
that we could). I'd still like 1-2 in two patches.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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