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>

2 files changed, 0 insertions, 75 deletions

diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h
index 637fe031aa84..60d5d174dfe4 100644
--- 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 ac87a40502e6..a6ffc775a9f8 100644
--- 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 */