On Thu, 5 Jun 2014 14:27:34 +0100 Matt Fleming <matt@xxxxxxxxxxxxxxxxx> wrote: > From: Matt Fleming <matt.fleming@xxxxxxxxx> > > free_bootmem_late() expects to only be passed RAM regions that the > kernel can access, and that have a corresponding 'struct page'. It's > possible for regions in the EFI memory map to reside in address ranges > for which pfn_to_page() doesn't work, for instance when running on an > i386 system with CONFIG_HIGHMEM=n. > > This is in fact the case for one of Alan's machines where some of the > EFI boot services pages live in highmem, and running a kernel without > CONFIG_HIGHMEM enabled results in the following oops, > > BUG: unable to handle kernel paging request at f7f1f080 > IP: [<c17fba96>] __free_pages_bootmem+0x5a/0xb8 > *pdpt = 0000000001887001 *pde = 0000000001984067 *pte = 000000000 0000000 > Oops: 0002 [#1] SMP No improvement, and the if case is never true 8( -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
