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xen-devel
Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking
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To: |
Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking |
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From: |
Weidong Han <weidong.han@xxxxxxxxx> |
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Date: |
Mon, 25 Jan 2010 22:10:33 +0800 |
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Cc: |
Sander Eikelenboom <linux@xxxxxxxxxxxxxx>, "Cihula, Joseph" <joseph.cihula@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Noboru Iwamatsu <n_iwamatsu@xxxxxxxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx> |
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Mon, 25 Jan 2010 06:11:00 -0800 |
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Keir Fraser wrote:
On 25/01/2010 10:45, "Sander Eikelenboom" <linux@xxxxxxxxxxxxxx> wrote:
a) Could be discussed if panic should be default instead of disabling iommu or
not, although there seem to be a lot of broken bioses, so that would lead to a
lot of machines not booting.
Absolutely not acceptable. Warn and completely disable IOMMU is the correct
default causing least pain to the most end users.
-- Keir
Agree. It should not crash Xen by default due to BIOS issues.
warn-and-disable is better. It won't impact common Xen users, and if a
user really wants to use VT-d, he can try iommu=workaround_bogus_bios,
or directly report to OEM vendor to get it fixed in BIOS. As VT-d is
used more and more widely, I think the BIOS issues will be found and
fixed more quickly than before, thus the situation should be better.
Regards,
Weidong
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- RE: Documentation Xen-hypervisor and Dom0 xen-related boot options (was Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, documenting boot options), (continued)
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Noboru Iwamatsu
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Weidong Han
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Sander Eikelenboom
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Keir Fraser
- [Xen-devel] Re: [PATCH] VT-d: improve RMRR validity checking, Christian Tramnitz
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking,
Weidong Han <=
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Noboru Iwamatsu
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Weidong Han
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Noboru Iwamatsu
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Weidong Han
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Weidong Han
- RE: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Han, Weidong
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Andrew Lyon
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Keir Fraser
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Noboru Iwamatsu
- Re: [Xen-devel] [PATCH] VT-d: improve RMRR validity checking, Weidong Han
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