From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Linus Torvalds <torvalds@transmeta.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Linux Kernel Development <linux-kernel@vger.kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>
Subject: [PATCH] Sun-3 pte_file
Date: Sat, 26 Jul 2003 16:51:59 +0200 [thread overview]
Message-ID: <200307261451.h6QEpxOT002472@callisto.of.borg> (raw)
Sun-3: pte_file fixes for sun-3 MMUs (from Sam Creasey)
--- linux-2.6.x/include/asm-m68k/sun3_pgtable.h Tue May 27 19:03:41 2003
+++ linux-m68k-2.6.x/include/asm-m68k/sun3_pgtable.h Fri Jul 18 16:24:45 2003
@@ -38,6 +38,8 @@
#define _PAGE_PRESENT (SUN3_PAGE_VALID)
#define _PAGE_ACCESSED (SUN3_PAGE_ACCESSED)
+#define PTE_FILE_MAX_BITS 28
+
/* Compound page protection values. */
//todo: work out which ones *should* have SUN3_PAGE_NOCACHE and fix...
// is it just PAGE_KERNEL and PAGE_SHARED?
@@ -160,6 +162,7 @@
extern inline int pte_exec(pte_t pte) { return 1; }
extern inline int pte_dirty(pte_t pte) { return pte_val(pte) & SUN3_PAGE_MODIFIED; }
extern inline int pte_young(pte_t pte) { return pte_val(pte) & SUN3_PAGE_ACCESSED; }
+extern inline int pte_file(pte_t pte) { return pte_val(pte) & SUN3_PAGE_ACCESSED; }
extern inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) &= ~SUN3_PAGE_WRITEABLE; return pte; }
extern inline pte_t pte_rdprotect(pte_t pte) { return pte; }
@@ -194,6 +197,18 @@
{
return (pmd_t *) pgd;
}
+
+static inline unsigned long pte_to_pgoff(pte_t pte)
+{
+ return pte.pte & SUN3_PAGE_PGNUM_MASK;
+}
+
+static inline pte_t pgoff_to_pte(inline unsigned off)
+{
+ pte_t pte = { off + SUN3_PAGE_ACCESSED };
+ return pte;
+}
+
/* Find an entry in the third-level pagetable. */
#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE-1))
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
reply other threads:[~2003-07-26 14:41 UTC|newest]
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