From 8dd3303001976aa8583bf20f6b93590c74114308 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 4 Dec 2015 14:07:05 +0100 Subject: x86/mm: Introduce max_possible_pfn max_possible_pfn will be used for tracking max possible PFN for memory that isn't present in E820 table and could be hotplugged later. By default max_possible_pfn is initialized with max_pfn, but later it could be updated with highest PFN of hotpluggable memory ranges declared in ACPI SRAT table if any present. Signed-off-by: Igor Mammedov Cc: Andrew Morton Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: akataria@vmware.com Cc: fujita.tomonori@lab.ntt.co.jp Cc: konrad.wilk@oracle.com Cc: pbonzini@redhat.com Cc: revers@redhat.com Cc: riel@redhat.com Link: http://lkml.kernel.org/r/1449234426-273049-2-git-send-email-imammedo@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/mm/srat.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/mm') diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c index c2aea63bee20..b5f821881465 100644 --- a/arch/x86/mm/srat.c +++ b/arch/x86/mm/srat.c @@ -203,6 +203,8 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) pr_warn("SRAT: Failed to mark hotplug range [mem %#010Lx-%#010Lx] in memblock\n", (unsigned long long)start, (unsigned long long)end - 1); + max_possible_pfn = max(max_possible_pfn, PFN_UP(end - 1)); + return 0; out_err_bad_srat: bad_srat(); -- cgit v1.2.3