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authorMax Filippov <jcmvbkbc@gmail.com>2017-12-04 04:09:41 +0100
committerMax Filippov <jcmvbkbc@gmail.com>2017-12-17 07:37:12 +0100
commit1af1e8a39dc0fab5e50f10462c636da8c1e0cfbb (patch)
tree5b0bd8c0077c94c759204fa971f80a9714149b20 /arch/xtensa/include
parentxtensa: don't clear swapper_pg_dir in paging_init (diff)
downloadlinux-1af1e8a39dc0fab5e50f10462c636da8c1e0cfbb.tar.xz
linux-1af1e8a39dc0fab5e50f10462c636da8c1e0cfbb.zip
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/include')
-rw-r--r--arch/xtensa/include/asm/fixmap.h4
-rw-r--r--arch/xtensa/include/asm/highmem.h2
-rw-r--r--arch/xtensa/include/asm/page.h2
3 files changed, 3 insertions, 5 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:
*