From daa149dd8cd4ad8dc4f8dd47bd24f15992b3a8c1 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Fri, 22 Oct 2021 15:06:46 +0800 Subject: arm64: Use correct method to calculate nomap region boundaries Nomap regions are treated as "reserved". When region boundaries are not page aligned, we usually increase the "reserved" regions rather than decrease them. So, we should use memblock_region_reserved_base_pfn()/ memblock_region_reserved_end_pfn() instead of memblock_region_memory_ base_pfn()/memblock_region_memory_base_pfn() to calculate boundaries. Signed-off-by: Huacai Chen Link: https://lore.kernel.org/r/20211022070646.41923-1-chenhuacai@loongson.cn Signed-off-by: Catalin Marinas --- arch/arm64/kernel/setup.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch/arm64/kernel/setup.c') diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index a80430550a73..f70573928f1b 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -237,12 +237,14 @@ static void __init request_standard_resources(void) if (memblock_is_nomap(region)) { res->name = "reserved"; res->flags = IORESOURCE_MEM; + res->start = __pfn_to_phys(memblock_region_reserved_base_pfn(region)); + res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1; } else { res->name = "System RAM"; res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY; + res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region)); + res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1; } - res->start = __pfn_to_phys(memblock_region_memory_base_pfn(region)); - res->end = __pfn_to_phys(memblock_region_memory_end_pfn(region)) - 1; request_resource(&iomem_resource, res); -- cgit