Re: [Xen-devel] [PATCH v4 3/8] hvmloader: Set up highmem resouce appropriately if there is no RAM above 4G

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

George Dunlap writes ("[PATCH v4 3/8] hvmloader: Set up highmem resouce 
appropriately if there is no RAM above 4G"):
> hvmloader will read hvm_info->high_mem_pgend to calculate where to
> start the highmem PCI region.  However, if the guest does not have any
> memory in the high region, this is set to zero, which will cause
> hvmloader to use the "0" for the base of the highmem region, rather
> than 1 << 32.
> 
> Check to see whether hvm_info->high_mem_pgend is set; if so, do the
> normal calculation; otherwise, use 1<<32.
> 
> v4:
> 
>  - Handle case where hfm_info->high_mem_pgend is non-zero but doesn't
>    point into high memory, throwing a warning.

Acked-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>

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