[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Re: [PATCH] SeaBIOS/Xen: Compute the low RAM memory size in the BDA according to the e820
On Mon, Nov 14, 2011 at 1:23 PM, Keir Fraser <keir@xxxxxxx> wrote: > On 14/11/2011 08:53, "Keir Fraser" <keir.xen@xxxxxxxxx> wrote: > >> On 14/11/2011 03:36, "Kevin O'Connor" <kevin@xxxxxxxxxxxx> wrote: >> >>> On Xen, the PCI init code isn't used, so assuming this struct doesn't >>> need to live in real "ram", I think it could live just about anywhere >>> past the end of ram. ÂEven with pciinit.c, addresses over 0xfc00000 >>> (with the exception of a few bytes for hpet, apic, ioapic, and bios >>> image) could be used. >> >> I suggest we stick it at FC000000, and shift hvmloader's mem_alloc() >> starting address up by one page to FC001000. The acpi build code will have >> to manually mem_hole_populate_ram() that one page before writing to it. This >> can then be documented in hvmloader/config.h which contains a description >> of, and defines for, the system memory map. This is by far the easiest >> solution to this problem; manually crafting an SSDT is a right pain in the >> arse, whereas this is maybe a 5-line patch. > > Like the attached patch (untested), which is a bit larger than anticipated, > but actually allows code to be net deleted. :-) > That was quick. I will give it a try shortly. -- Julian _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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