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Re: [Qemu-devel] [PATCH v2 7/7] intel-iommu: keep buggy EIM enabled in 2
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From: |
Eduardo Habkost |
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Subject: |
Re: [Qemu-devel] [PATCH v2 7/7] intel-iommu: keep buggy EIM enabled in 2.7 machine type |
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Date: |
Thu, 29 Sep 2016 12:01:19 -0300 |
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User-agent: |
Mutt/1.7.0 (2016-08-17) |
On Thu, Sep 29, 2016 at 01:23:29PM +0200, Radim Krčmář wrote:
> QEMU 2.7 allowed EIM even in configurations that were forbidden in the
> last patch because they were not working, like old KVM or userspace
> APIC. In order to keep backward compatibility, we again allow guests to
> misbehave in non-obvious ways, and make it the default.
>
> Signed-off-by: Radim Krčmář <address@hidden>
If you break compatibility and fix it in separate patches, you
break bisectability (even for people that are bisecting bugs
unrelated to EIM).
(But I still don't understand if patch 6/7 really breaks
anything, or not.)
--
Eduardo
- [Qemu-devel] [PATCH v2 0/7] intel_iommu: fix EIM, Radim Krčmář, 2016/09/29
- [Qemu-devel] [PATCH v2 2/7] apic: add send_msi() to APICCommonClass, Radim Krčmář, 2016/09/29
- [Qemu-devel] [PATCH v2 1/7] apic: add global apic_get_class(), Radim Krčmář, 2016/09/29
- [Qemu-devel] [PATCH v2 3/7] intel_iommu: pass whole remapped addresses to apic, Radim Krčmář, 2016/09/29
- [Qemu-devel] [PATCH v2 4/7] intel-iommu: exit on invalid configuraton earlier, Radim Krčmář, 2016/09/29
- [Qemu-devel] [PATCH v2 7/7] intel-iommu: keep buggy EIM enabled in 2.7 machine type, Radim Krčmář, 2016/09/29
- [Qemu-devel] [PATCH v2 5/7] intel-iommu: add OnOffAuto intr_eim as "eim" property, Radim Krčmář, 2016/09/29
- [Qemu-devel] [PATCH v2 6/7] intel_iommu: reject broken EIM, Radim Krčmář, 2016/09/29