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| author | Max Filippov <jcmvbkbc@gmail.com> | 2017-12-03 19:09:41 -0800 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2017-12-16 22:37:12 -0800 |
| commit | 1af1e8a39dc0fab5e50f10462c636da8c1e0cfbb (patch) | |
| tree | 5b0bd8c0077c94c759204fa971f80a9714149b20 /arch/xtensa | |
| parent | d4e337fe822354895334dbaded61f08206dcac25 (diff) | |
| download | linux-1af1e8a39dc0fab5e50f10462c636da8c1e0cfbb.tar.bz2 | |
xtensa: move fixmap and kmap just above the KSEG
The virtual address space between the page table and the VMALLOC region
is big enough to host KASAN shadow map and there's enough space between
the VMALLOC area and KSEG for the fixmap and kmap.
Move fixmap and kmap to the gap between VMALLOC area and KSEG, just
above the KSEG. Reorder entries in the kernel memory layout printing
code. Drop duplicate PGTABLE_START definition, use
XCHAL_PAGE_TABLE_VADDR instead.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/asm/fixmap.h | 4 | ||||
| -rw-r--r-- | arch/xtensa/include/asm/highmem.h | 2 | ||||
| -rw-r--r-- | arch/xtensa/include/asm/page.h | 2 | ||||
| -rw-r--r-- | arch/xtensa/mm/init.c | 12 |
4 files changed, 9 insertions, 11 deletions
diff --git a/arch/xtensa/include/asm/fixmap.h b/arch/xtensa/include/asm/fixmap.h index 0d30403b6c95..7e25c1b50ac0 100644 --- a/arch/xtensa/include/asm/fixmap.h +++ b/arch/xtensa/include/asm/fixmap.h @@ -44,7 +44,7 @@ enum fixed_addresses { __end_of_fixed_addresses }; -#define FIXADDR_TOP (VMALLOC_START - PAGE_SIZE) +#define FIXADDR_TOP (XCHAL_KSEG_CACHED_VADDR - PAGE_SIZE) #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define FIXADDR_START ((FIXADDR_TOP - FIXADDR_SIZE) & PMD_MASK) @@ -63,7 +63,7 @@ static __always_inline unsigned long fix_to_virt(const unsigned int idx) * table. */ BUILD_BUG_ON(FIXADDR_START < - XCHAL_PAGE_TABLE_VADDR + XCHAL_PAGE_TABLE_SIZE); + TLBTEMP_BASE_1 + TLBTEMP_SIZE); BUILD_BUG_ON(idx >= __end_of_fixed_addresses); return __fix_to_virt(idx); } diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h index 6e070db1022e..04e9340eac4b 100644 --- a/arch/xtensa/include/asm/highmem.h +++ b/arch/xtensa/include/asm/highmem.h @@ -72,7 +72,7 @@ static inline void *kmap(struct page *page) * page table. */ BUILD_BUG_ON(PKMAP_BASE < - XCHAL_PAGE_TABLE_VADDR + XCHAL_PAGE_TABLE_SIZE); + TLBTEMP_BASE_1 + TLBTEMP_SIZE); BUG_ON(in_interrupt()); if (!PageHighMem(page)) return page_address(page); diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h index 4ddbfd57a7c8..5d69c11c01b8 100644 --- a/arch/xtensa/include/asm/page.h +++ b/arch/xtensa/include/asm/page.h @@ -36,8 +36,6 @@ #define MAX_LOW_PFN PHYS_PFN(0xfffffffful) #endif -#define PGTABLE_START 0x80000000 - /* * Cache aliasing: * diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 720fe4e8b497..6fc1cb093fb3 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -100,23 +100,23 @@ void __init mem_init(void) mem_init_print_info(NULL); pr_info("virtual kernel memory layout:\n" +#ifdef CONFIG_MMU + " vmalloc : 0x%08lx - 0x%08lx (%5lu MB)\n" +#endif #ifdef CONFIG_HIGHMEM " pkmap : 0x%08lx - 0x%08lx (%5lu kB)\n" " fixmap : 0x%08lx - 0x%08lx (%5lu kB)\n" #endif -#ifdef CONFIG_MMU - " vmalloc : 0x%08lx - 0x%08lx (%5lu MB)\n" -#endif " lowmem : 0x%08lx - 0x%08lx (%5lu MB)\n", +#ifdef CONFIG_MMU + VMALLOC_START, VMALLOC_END, + (VMALLOC_END - VMALLOC_START) >> 20, #ifdef CONFIG_HIGHMEM PKMAP_BASE, PKMAP_BASE + LAST_PKMAP * PAGE_SIZE, (LAST_PKMAP*PAGE_SIZE) >> 10, FIXADDR_START, FIXADDR_TOP, (FIXADDR_TOP - FIXADDR_START) >> 10, #endif -#ifdef CONFIG_MMU - VMALLOC_START, VMALLOC_END, - (VMALLOC_END - VMALLOC_START) >> 20, PAGE_OFFSET, PAGE_OFFSET + (max_low_pfn - min_low_pfn) * PAGE_SIZE, #else |