From: H. Peter Anvin Date: Sat, 27 Jun 2009 19:22:27 +0000 (-0700) Subject: Revert "x86: cap iomem_resource to addressable physical memory" X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ff8a4bae459a9b6455504127fcb78fdbc8e50e4c;p=linux-beck.git Revert "x86: cap iomem_resource to addressable physical memory" This reverts commit 95ee14e4379c5e19c0897c872350570402014742. Mikael Petterson reported that at least one of his systems will not boot as a result. We have ruled out the detection algorithm malfunctioning, so it is not a matter of producing the incorrect bitmasks; rather, something in the application of them fails. Revert the commit until we can root cause and correct this problem. -stable team: this means the underlying commit should be rejected. Reported-and-isolated-by: Mikael Petterson Signed-off-by: H. Peter Anvin LKML-Reference: <200906261559.n5QFxJH8027336@pilspetsen.it.uu.se> Cc: stable@kernel.org Cc: Grant Grundler --- diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 6b26d4deada0..f1961c07af9a 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -848,9 +848,6 @@ static void __cpuinit identify_cpu(struct cpuinfo_x86 *c) #if defined(CONFIG_NUMA) && defined(CONFIG_X86_64) numa_add_cpu(smp_processor_id()); #endif - - /* Cap the iomem address space to what is addressable on all CPUs */ - iomem_resource.end &= (1ULL << c->x86_phys_bits) - 1; } #ifdef CONFIG_X86_64