1a2b441231
Fix early_ioremap() on x86-64 I had ACPI failures on several machines since a few days. Symptom was NUMA nodes not getting detected or worse cores not getting detected. They all came from ACPI not being able to read various of its tables. I finally bisected it down to Jeremy's "put _PAGE_GLOBAL into PAGE_KERNEL" change. With that the fix was fairly obvious. The problem was that early_ioremap() didn't use a "_all" flush that would affect the global PTEs too. So with global bits getting used everywhere now an early_ioremap would not actually flush a mapping if something else was mapped previously on that slot (which can happen with early_iounmap inbetween) This patch changes all flushes in init_64.c to be __flush_tlb_all() and fixes the problem here. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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