Messages in this thread | | | Date | Tue, 13 Apr 2010 14:42:51 -0700 | From | Yinghai <> | Subject | Re: [PATCH -v2 1/2] x86: Reserve [0xa0000, 0x100000] in e820 map |
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On 04/13/2010 02:18 PM, H. Peter Anvin wrote: > On 04/13/2010 02:11 PM, Yinghai wrote: >>> >>> I guess the real question (which I haven't looked at myself) is if the >>> E820_RESERVED -> BUSY will cause an explicitly assigned BAR from being >>> moved. That's bad, not so much for this particular range, but from BARs >>> which may be assigned by SMM. Hacking that up in a simulator >>> (Qemu/Bochs) and testing it is probably on the to do list... >> >> no, if some device BAR fall in that range, it should still use that range, and will not be relocated. >> >> will update the change log. >> > > Good, that's what we want.
the driver for that device later can not use pci_request_region(). because that region is BUSY already.
YH
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