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Re: [PATCH 3/6] kvm/i386: Stop using cpu->kvm_msr_buf in kvm_put_one_msr
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From: |
Alexander Graf |
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Subject: |
Re: [PATCH 3/6] kvm/i386: Stop using cpu->kvm_msr_buf in kvm_put_one_msr() |
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Date: |
Tue, 8 Jun 2021 10:27:52 +0200 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:90.0) Gecko/20100101 Thunderbird/90.0 |
On 24.05.21 21:54, Siddharth Chandrasekaran wrote:
kvm_put_one_msr() zeros cpu->kvm_msr_buf and uses it to set one MSR to
KVM. It is pretty wasteful as cpu->kvm_msr_buf is 4096 bytes long;
instead use a local buffer to avoid memset.
Also, expose this method from kvm_i386.h as hyperv.c needs to set MSRs
in a subsequent patch.
Signed-off-by: Siddharth Chandrasekaran <sidcha@amazon.de>
Reviewed-by: Alexander Graf <graf@amazon.com>
Alex
Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879
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