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Groups > linux.kernel > #1701927
| From | Paolo Bonzini <pbonzini@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] kvm: x86: reduce rtc 0x70 access vm-exit time |
| Date | 2017-08-02 11:00 +0200 |
| Message-ID | <u9XFx-7As-35@gated-at.bofh.it> (permalink) |
| References | <u9XFx-7As-37@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 02/08/2017 10:45, peng.hao2@zte.com.cn wrote: >>On 02/08/2017 17:24, Peng Hao wrote: > coalesced MMIO is async and io port should be sync . I don't need to > coalese io port access. Coalesced MMIO access is resolved on the next read from a coalesced MMIO address or the next write to a non-coalescecd MMIO address. So it would work perfectly for port 0x70. You would have to modify QEMU to split the RTC I/O ports into two MemoryRegions. Paolo
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Re: [PATCH] kvm: x86: reduce rtc 0x70 access vm-exit time Paolo Bonzini <pbonzini@redhat.com> - 2017-08-02 11:00 +0200
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