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Re: 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin
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From: |
Paolo Bonzini |
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Subject: |
Re: 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin |
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Date: |
Thu, 22 Oct 2020 05:30:37 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.3.1 |
On 22/10/20 05:02, FelixCui-oc wrote:
> In addition, before write pam registers, flatview_simplify() has merged
> a very large range.For example,
>
> this large range is 0xc0000-0xbfffffff. So even if EHCI is configured to
> not allocate buffers in low memory,
>
> this bug will still occur.Thanks.
So removing flatview_simplify() works because the higher area (0x10000
and above) remains the same. I guess the simplest thing to do is to
apply flatview_simplify() only to I/O areas, though we can also consider
removing it completely. I'm not sure in which case it would provide a
noticeable improvement.
Paolo
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, (continued)
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, Paolo Bonzini, 2020/10/16
- 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, FelixCui-oc, 2020/10/19
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, Alex Williamson, 2020/10/19
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, Paolo Bonzini, 2020/10/20
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, Alex Williamson, 2020/10/20
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, Paolo Bonzini, 2020/10/21
- 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, FelixCui-oc, 2020/10/21
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, Alex Williamson, 2020/10/21
- Re: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, Paolo Bonzini, 2020/10/21
- 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, FelixCui-oc, 2020/10/21
- Re: 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin,
Paolo Bonzini <=
- 答复: 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, FelixCui-oc, 2020/10/22
- 答复: 答复: [PATCH 1/1] Skip flatview_simplify() for cpu vendor zhaoxin, FelixCui-oc, 2020/10/26