From 8d1580c4bb85723fa4bb2a22f7628a192a1a06f0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 23 Apr 2015 11:31:54 +0000 Subject: brcm47xx: add patches for kernel 4.0 SVN-Revision: 45570 --- .../brcm47xx/patches-4.0/310-no_highpage.patch | 66 ++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 target/linux/brcm47xx/patches-4.0/310-no_highpage.patch (limited to 'target/linux/brcm47xx/patches-4.0/310-no_highpage.patch') diff --git a/target/linux/brcm47xx/patches-4.0/310-no_highpage.patch b/target/linux/brcm47xx/patches-4.0/310-no_highpage.patch new file mode 100644 index 0000000000..41542a0121 --- /dev/null +++ b/target/linux/brcm47xx/patches-4.0/310-no_highpage.patch @@ -0,0 +1,66 @@ +--- a/arch/mips/include/asm/page.h ++++ b/arch/mips/include/asm/page.h +@@ -71,6 +71,7 @@ static inline unsigned int page_size_ftl + #endif /* CONFIG_MIPS_HUGE_TLB_SUPPORT */ + + #include ++#include + + extern void build_clear_page(void); + extern void build_copy_page(void); +@@ -105,13 +106,16 @@ static inline void clear_user_page(void + flush_data_cache_page((unsigned long)addr); + } + +-extern void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, +- struct page *to); +-struct vm_area_struct; +-extern void copy_user_highpage(struct page *to, struct page *from, +- unsigned long vaddr, struct vm_area_struct *vma); ++static inline void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, ++ struct page *to) ++{ ++ extern void (*flush_data_cache_page)(unsigned long addr); + +-#define __HAVE_ARCH_COPY_USER_HIGHPAGE ++ copy_page(vto, vfrom); ++ if (!cpu_has_ic_fills_f_dc || ++ pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK)) ++ flush_data_cache_page((unsigned long)vto); ++} + + /* + * These are used to make use of C type-checking.. +--- a/arch/mips/mm/init.c ++++ b/arch/mips/mm/init.c +@@ -149,30 +149,6 @@ void kunmap_coherent(void) + pagefault_enable(); + } + +-void copy_user_highpage(struct page *to, struct page *from, +- unsigned long vaddr, struct vm_area_struct *vma) +-{ +- void *vfrom, *vto; +- +- vto = kmap_atomic(to); +- if (cpu_has_dc_aliases && cpu_use_kmap_coherent && +- page_mapped(from) && !Page_dcache_dirty(from)) { +- vfrom = kmap_coherent(from, vaddr); +- copy_page(vto, vfrom); +- kunmap_coherent(); +- } else { +- vfrom = kmap_atomic(from); +- copy_page(vto, vfrom); +- kunmap_atomic(vfrom); +- } +- if ((!cpu_has_ic_fills_f_dc) || +- pages_do_alias((unsigned long)vto, vaddr & PAGE_MASK)) +- flush_data_cache_page((unsigned long)vto); +- kunmap_atomic(vto); +- /* Make sure this page is cleared on other CPU's too before using it */ +- smp_wmb(); +-} +- + void copy_to_user_page(struct vm_area_struct *vma, + struct page *page, unsigned long vaddr, void *dst, const void *src, + unsigned long len) -- cgit v1.2.3