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| author | Max Filippov <jcmvbkbc@gmail.com> | 2016-04-11 21:14:17 +0300 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2016-07-24 06:33:58 +0300 |
| commit | d39af90265feb40ec198c4ca8268724645b4b50e (patch) | |
| tree | 32c3aed4a66a243251ca0a9e195c4ba8e6dddeeb /arch/xtensa/mm | |
| parent | f1883aa7d63e3be92ad18da7a1bfc6c9b15c4f9a (diff) | |
| download | linux-d39af90265feb40ec198c4ca8268724645b4b50e.tar.xz | |
xtensa: add alternative kernel memory layouts
MMUv3 is able to support low memory bigger than 128MB.
Implement 256MB and 512MB KSEG layouts:
- add Kconfig selector for KSEG layout;
- add KSEG base address, size and alignment definitions to
arch/xtensa/include/asm/kmem_layout.h;
- use new definitions in TLB initialization;
- add build time memory map consistency checks.
See Documentation/xtensa/mmu.txt for the details of new memory layouts.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/mm')
| -rw-r--r-- | arch/xtensa/mm/init.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 4d7142beac72..302fa72d0d5a 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -266,8 +266,7 @@ void __init bootmem_init(void) if (min_low_pfn > max_pfn) panic("No memory found!\n"); - max_low_pfn = max_pfn < MAX_MEM_PFN >> PAGE_SHIFT ? - max_pfn : MAX_MEM_PFN >> PAGE_SHIFT; + max_low_pfn = min(max_pfn, MAX_LOW_PFN); /* Find an area to use for the bootmem bitmap. */ |