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| author |   Huacai Chen <chenhuacai@loongson.cn> | 2021-10-22 15:06:46 +0800 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2022-01-05 14:46:06 +0000 |
| commit | daa149dd8cd4ad8dc4f8dd47bd24f15992b3a8c1 (patch) | |
| tree | 66e685bb878ee89d3be875aff736497b9be50322 | |
| parent | arm64: Drop outdated links in comments (diff) | |
| download | linux-dev-daa149dd8cd4ad8dc4f8dd47bd24f15992b3a8c1.tar.xz linux-dev-daa149dd8cd4ad8dc4f8dd47bd24f15992b3a8c1.zip | |
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 <chenhuacai@loongson.cn>
Link: https://lore.kernel.org/r/20211022070646.41923-1-chenhuacai@loongson.cn
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/kernel/setup.c | 6 |
1 files changed, 4 insertions, 2 deletions
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); |