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[Qemu-devel] Re: [PATCH v2 17/17] kvm: Drop dependencies on very old cap
From: |
Jan Kiszka |
Subject: |
[Qemu-devel] Re: [PATCH v2 17/17] kvm: Drop dependencies on very old capabilities |
Date: |
Mon, 03 Jan 2011 17:54:32 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
Am 03.01.2011 17:08, Avi Kivity wrote:
> On 01/03/2011 10:33 AM, Jan Kiszka wrote:
>> From: Jan Kiszka<address@hidden>
>>
>> COALESCED_MMIO, SYNC_MMU, EXT_CPUID, CLOCKSOURCE, NOP_IO_DELAY, PV_MMU -
>> all these caps predate features on which we already depend at build
>> time. Moreover, the check for KVM_CAP_EXT_CPUID is unneeded as we
>> already test& fail is a more recent feature is missing.
>
> No. Each test documents a dependency of qemu on a kvm feature. Even
> though something like SYNC_MMU is unlikely to go away, as long as we
> depend on it, we require the feature.
>
Then at least move all those KVM_CAPs we need at build time into
configure. I really see no value in keeping ugly conditional code
around, A) because those paths won't be tested and B) none of the CAPs
touched here are to pass away without a replacement that will require
user space adaption anyway.
Jan
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[Qemu-devel] [PATCH v2 12/17] kvm: x86: Drop MCE MSRs write back restrictions, Jan Kiszka, 2011/01/03
[Qemu-devel] [PATCH v2 02/17] kvm: Drop return value of kvm_cpu_exec, Jan Kiszka, 2011/01/03
[Qemu-devel] [PATCH v2 03/17] kvm: Stop on all fatal exit reasons, Jan Kiszka, 2011/01/03
[Qemu-devel] [PATCH v2 04/17] kvm: Improve reporting of fatal errors, Jan Kiszka, 2011/01/03
[Qemu-devel] [PATCH 18/17] kvm: Flush coalesced mmio buffer on IO window exits, Jan Kiszka, 2011/01/03
[Qemu-devel] Re: [PATCH v2 00/17] [uq/master] Prepare for more qemu-kvm merging, Avi Kivity, 2011/01/03