On Wed, 08 Dec 2010 14:36:06 -0700 Bjorn Helgaas <bjorn.helgaas@xxxxxx> wrote: > > This adds arch_remove_reservations(), which an arch can implement if it > needs to protect part of the address space from allocation. > > Sometimes that can be done by just requesting a resource. This hook is to > cover cases where protected area doesn't fit well in the hierarchical > resource tree. For example, x86 BIOS E820 reservations are not related > to devices, so they may overlap part of, all of, or more than a device > resource. > > Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx> > --- Hm, this is bigger than the simple change of just avoiding the high 2M; Linus have you checked it out yet? It's nicer than simply adjusting PCIBIOS_MAX_MEM since it will affect all resource callers rather than just PCI, but it's definitely bigger. If you want just the simple change for 2.6.37 I can push that, but we'll need to get a tested-by from Matthew: diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h index ca0437c..aef9f77 100644 --- a/arch/x86/include/asm/pci.h +++ b/arch/x86/include/asm/pci.h @@ -141,7 +141,7 @@ void dma32_reserve_bootmem(void); /* generic pci stuff */ #include <asm-generic/pci.h> -#define PCIBIOS_MAX_MEM_32 0xffffffff +#define PCIBIOS_MAX_MEM_32 0xfff00000 #ifdef CONFIG_NUMA /* Returns the node based on pci bus */ and I'll queue up this set for 2.6.38. Thanks, -- Jesse Barnes, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
