diff options
Diffstat (limited to 'arch/x86/include/asm/highmem.h')
| -rw-r--r-- | arch/x86/include/asm/highmem.h | 51 |
1 files changed, 24 insertions, 27 deletions
diff --git a/arch/x86/include/asm/highmem.h b/arch/x86/include/asm/highmem.h index 302a323b3f67..585bdadba47d 100644 --- a/arch/x86/include/asm/highmem.h +++ b/arch/x86/include/asm/highmem.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * highmem.h: virtual kernel memory mappings for high memory * @@ -22,10 +23,10 @@ #include <linux/interrupt.h> #include <linux/threads.h> -#include <asm/kmap_types.h> #include <asm/tlbflush.h> #include <asm/paravirt.h> #include <asm/fixmap.h> +#include <asm/pgtable_areas.h> /* declarations for highmem.c */ extern unsigned long highstart_pfn, highend_pfn; @@ -38,39 +39,35 @@ extern unsigned long highstart_pfn, highend_pfn; /* * Ordering is: * - * FIXADDR_TOP - * fixed_addresses - * FIXADDR_START - * temp fixed addresses - * FIXADDR_BOOT_START - * Persistent kmap area - * PKMAP_BASE - * VMALLOC_END - * Vmalloc area - * VMALLOC_START - * high_memory + * high memory on: high_memory off: + * FIXADDR_TOP FIXADDR_TOP + * fixed addresses fixed addresses + * FIXADDR_START FIXADDR_START + * temp fixed addresses/persistent kmap area VMALLOC_END + * PKMAP_BASE temp fixed addresses/vmalloc area + * VMALLOC_END VMALLOC_START + * vmalloc area high_memory + * VMALLOC_START + * high_memory + * + * The temp fixed area is only used during boot for early_ioremap(), and + * it is unused when the ioremap() is functional. vmalloc/pkmap area become + * available after early boot so the temp fixed area is available for re-use. */ #define LAST_PKMAP_MASK (LAST_PKMAP-1) #define PKMAP_NR(virt) ((virt-PKMAP_BASE) >> PAGE_SHIFT) #define PKMAP_ADDR(nr) (PKMAP_BASE + ((nr) << PAGE_SHIFT)) -extern void *kmap_high(struct page *page); -extern void kunmap_high(struct page *page); - -void *kmap(struct page *page); -void kunmap(struct page *page); - -void *kmap_atomic_prot(struct page *page, pgprot_t prot); -void *kmap_atomic(struct page *page); -void __kunmap_atomic(void *kvaddr); -void *kmap_atomic_pfn(unsigned long pfn); -void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot); -struct page *kmap_atomic_to_page(void *ptr); - #define flush_cache_kmaps() do { } while (0) -extern void add_highpages_with_active_regions(int nid, unsigned long start_pfn, - unsigned long end_pfn); +#define arch_kmap_local_post_map(vaddr, pteval) \ + arch_flush_lazy_mmu_mode() + +#define arch_kmap_local_post_unmap(vaddr) \ + do { \ + flush_tlb_one_kernel((vaddr)); \ + arch_flush_lazy_mmu_mode(); \ + } while (0) #endif /* __KERNEL__ */ |