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Re: [Qemu-devel] [PATCH v3 2/4] intel_iommu: let iotlb size tunable
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [PATCH v3 2/4] intel_iommu: let iotlb size tunable |
Date: |
Fri, 14 Jul 2017 12:31:36 +0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Thu, Jul 13, 2017 at 08:47:00PM +0300, Michael S. Tsirkin wrote:
> On Wed, Jul 12, 2017 at 04:13:41PM +0800, Peter Xu wrote:
> > We were having static IOTLB size as 1024. Let it be a tunable. We can
> > also turns IOTLB off if we want, by specify the size as zero.
> >
> > The tunable is named as "x-iotlb-size" since that should not really be
> > something used by user yet, but mostly for debugging purpose now.
> >
> > Signed-off-by: Peter Xu <address@hidden>
>
> I'm somewhat vary of adding tunables just for developers to play with.
> People will find and abuse them :)
I would think it convenient (especially with "x-") and I would never
worry about people using it (I really see nothing dangerous...). But
if you don't like it, I can drop it in next version for sure.
Thanks,
--
Peter Xu
- [Qemu-devel] [PATCH v3 0/4] VT-d: some enhancements on iotlb, Peter Xu, 2017/07/12
- [Qemu-devel] [PATCH v3 1/4] intel_iommu: fix VTD_PAGE_MASK, Peter Xu, 2017/07/12
- [Qemu-devel] [PATCH v3 2/4] intel_iommu: let iotlb size tunable, Peter Xu, 2017/07/12
- [Qemu-devel] [PATCH v3 3/4] intel_iommu: use access_flags for iotlb, Peter Xu, 2017/07/12
- [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Peter Xu, 2017/07/12
- Re: [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Jason Wang, 2017/07/13
- Re: [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Peter Xu, 2017/07/14
- Re: [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Jason Wang, 2017/07/14
- Re: [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Peter Xu, 2017/07/16
- Re: [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Michael S. Tsirkin, 2017/07/26
- Re: [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Peter Xu, 2017/07/26
Re: [Qemu-devel] [PATCH v3 4/4] intel_iommu: implement mru list for iotlb, Michael S. Tsirkin, 2017/07/13