Messages in this thread | | | Date | Sun, 19 Nov 2006 10:32:40 -0800 | From | Randy Dunlap <> | Subject | Re: [PATCH 2.6.19-rc6-git2] EFI: mapping memory region of runtime services when using memmap kernel parameter |
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Myaskouvskey, Artiom wrote: > From: Artiom Myaskouvskey <artiom.myaskouvskey@intel.com> > > When using memmap kernel parameter in EFI boot we should also add to memory map > memory regions of runtime services to enable their mapping later. > > Signed-off-by: Artiom Myaskouvskey <artiom.myaskouvskey@intel.com> > ---
The double linefeeds are gone. which is Good. It looks like you ignored the rest of my comments. :(
and for some reason, when I save this from tbird or sylpheed, all I get is base64 mess. Can anyone tell me how to convert that to something that is usable?
(I wonder why I didn't see this patch version on lkml...)
> diff -uprN linux-2.6.19-rc6-git2.original/include/linux/efi.h linux-2.6.19-rc6-git2/include/linux/efi.h > --- linux-2.6.19-rc6-git2.original/include/linux/efi.h 2006-11-19 10:47:41.000000000 +0200 > +++ linux-2.6.19-rc6-git2/include/linux/efi.h 2006-11-19 11:06:35.000000000 +0200 > @@ -302,6 +302,7 @@ extern void efi_initialize_iomem_resourc > struct resource *data_resource); > extern unsigned long __init efi_get_time(void); > extern int __init efi_set_rtc_mmss(unsigned long nowtime); > +extern int is_available_memory(efi_memory_desc_t * md); > extern struct efi_memory_map memmap; > > /** > diff -uprN linux-2.6.19-rc6-git2.original/arch/i386/kernel/setup.c linux-2.6.19-rc6-git2/arch/i386/kernel/setup.c > --- linux-2.6.19-rc6-git2.original/arch/i386/kernel/setup.c 2006-11-19 10:48:20.000000000 +0200 > +++ linux-2.6.19-rc6-git2/arch/i386/kernel/setup.c 2006-11-19 11:23:27.000000000 +0200 > @@ -349,25 +349,44 @@ static void __init probe_roms(void) > static void __init limit_regions(unsigned long long size) > { > unsigned long long current_addr = 0; > - int i; > + int i , j; > > if (efi_enabled) { > - efi_memory_desc_t *md; > - void *p; > + efi_memory_desc_t *md, *next_md = 0; > + void *p, *p1; > > - for (p = memmap.map, i = 0; p < memmap.map_end; > - p += memmap.desc_size, i++) { > + for (p = memmap.map, i = 0,j = 0, p1 = memmap.map; > + p < memmap.map_end; p += memmap.desc_size, i++) { > md = p; > - current_addr = md->phys_addr + (md->num_pages << 12); > - if (md->type == EFI_CONVENTIONAL_MEMORY) { > + next_md = p1; > + current_addr = md->phys_addr + > + PFN_PHYS(md->num_pages); > + if (is_available_memory(md)) { > + if (md->phys_addr >= size) continue; > + memcpy(next_md, md, memmap.desc_size); > if (current_addr >= size) { > - md->num_pages -= > - (((current_addr-size) + PAGE_SIZE-1) >> PAGE_SHIFT); > - memmap.nr_map = i + 1; > - return; > + next_md->num_pages -= > + PFN_UP(current_addr-size); > } > + p1 += memmap.desc_size; > + next_md = p1; > + j++; > + } > + else if ((md->attribute & EFI_MEMORY_RUNTIME) == > + EFI_MEMORY_RUNTIME) { > + /* In order to make runtime services > + * available we have to include runtime > + * memory regions in memory map */ > + memcpy(next_md, md, memmap.desc_size); > + p1 += memmap.desc_size; > + next_md = p1; > + j++; > } > } > + memmap.nr_map = j; > + memmap.map_end = memmap.map + > + (memmap.nr_map * memmap.desc_size); > + return; > } > for (i = 0; i < e820.nr_map; i++) { > current_addr = e820.map[i].addr + e820.map[i].size;
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