parisc: Remove unused CONFIG_PARISC_TMPALIAS code

The attached change removes the unused and experimental
CONFIG_PARISC_TMPALIAS code. It doesn't work and I don't believe it will
ever be used.

Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h
index 637fe031aa8476d743a8141ca9b549019985a0c6..60d5d174dfe413e14cb5117a04536ce7948d937d 100644 (file)
--- a/arch/parisc/include/asm/page.h
+++ b/arch/parisc/include/asm/page.h
@@ -32,17 +32,6 @@ void copy_page_asm(void *to, void *from);
 void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
                        struct page *pg);
 
-/* #define CONFIG_PARISC_TMPALIAS */
-
-#ifdef CONFIG_PARISC_TMPALIAS
-void clear_user_highpage(struct page *page, unsigned long vaddr);
-#define clear_user_highpage clear_user_highpage
-struct vm_area_struct;
-void copy_user_highpage(struct page *to, struct page *from,
-       unsigned long vaddr, struct vm_area_struct *vma);
-#define __HAVE_ARCH_COPY_USER_HIGHPAGE
-#endif
-
 /*
  * These are used to make use of C type-checking..
  */

diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index ac87a40502e6f6a0e11d21eaf6789259859ad092..a6ffc775a9f8105381b3da46214290a421a79c6c 100644 (file)
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -581,67 +581,3 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long
                __flush_cache_page(vma, vmaddr, PFN_PHYS(pfn));
        }
 }
-
-#ifdef CONFIG_PARISC_TMPALIAS
-
-void clear_user_highpage(struct page *page, unsigned long vaddr)
-{
-       void *vto;
-       unsigned long flags;
-
-       /* Clear using TMPALIAS region.  The page doesn't need to
-          be flushed but the kernel mapping needs to be purged.  */
-
-       vto = kmap_atomic(page);
-
-       /* The PA-RISC 2.0 Architecture book states on page F-6:
-          "Before a write-capable translation is enabled, *all*
-          non-equivalently-aliased translations must be removed
-          from the page table and purged from the TLB.  (Note
-          that the caches are not required to be flushed at this
-          time.)  Before any non-equivalent aliased translation
-          is re-enabled, the virtual address range for the writeable
-          page (the entire page) must be flushed from the cache,
-          and the write-capable translation removed from the page
-          table and purged from the TLB."  */
-
-       purge_kernel_dcache_page_asm((unsigned long)vto);
-       purge_tlb_start(flags);
-       pdtlb_kernel(vto);
-       purge_tlb_end(flags);
-       preempt_disable();
-       clear_user_page_asm(vto, vaddr);
-       preempt_enable();
-
-       pagefault_enable();             /* kunmap_atomic(addr, KM_USER0); */
-}
-
-void copy_user_highpage(struct page *to, struct page *from,
-       unsigned long vaddr, struct vm_area_struct *vma)
-{
-       void *vfrom, *vto;
-       unsigned long flags;
-
-       /* Copy using TMPALIAS region.  This has the advantage
-          that the `from' page doesn't need to be flushed.  However,
-          the `to' page must be flushed in copy_user_page_asm since
-          it can be used to bring in executable code.  */
-
-       vfrom = kmap_atomic(from);
-       vto = kmap_atomic(to);
-
-       purge_kernel_dcache_page_asm((unsigned long)vto);
-       purge_tlb_start(flags);
-       pdtlb_kernel(vto);
-       pdtlb_kernel(vfrom);
-       purge_tlb_end(flags);
-       preempt_disable();
-       copy_user_page_asm(vto, vfrom, vaddr);
-       flush_dcache_page_asm(__pa(vto), vaddr);
-       preempt_enable();
-
-       pagefault_enable();             /* kunmap_atomic(addr, KM_USER1); */
-       pagefault_enable();             /* kunmap_atomic(addr, KM_USER0); */
-}
-
-#endif /* CONFIG_PARISC_TMPALIAS */