* Re: pgcl-2.5.68-1
2003-04-22 12:27 pgcl-2.5.68-1 William Lee Irwin III
2003-04-22 13:19 ` pgcl-2.5.68-1 William Lee Irwin III
@ 2003-04-28 1:25 ` William Lee Irwin III
1 sibling, 0 replies; 3+ messages in thread
From: William Lee Irwin III @ 2003-04-28 1:25 UTC (permalink / raw)
To: linux-kernel
On Tue, Apr 22, 2003 at 05:27:47AM -0700, William Lee Irwin III wrote:
> (1) merge the asm-i386/pci.h fixes
> (2) fix up the bootmem stuff so current works
> (3) fix up the memmap_init() stuff so current works
> (4) PAGE_SIZE -align pkmap and kmap portions of fixmapspace to remove
> core dependencies on FIX_KMAP_END for aligning addresses.
(1) PAGE_SIZE-align kmap() and kmap_atomic() slots, albeit at the cost
of ca. PAGE_SIZE virtualspace
(2) fix up pci_dac_dma_to_page()
(3) remove mm/memory.c's dependency on FIX_KMAP_END
(4) fix mm/page_alloc.c mismerge
(5) do nothing for bootmem, it was actually innocent wrt. the merging bug
diff -prauN pgcl-2.5.68-1/include/asm-i386/fixmap.h pgcl-2.5.68-1D/include/asm-i386/fixmap.h
--- pgcl-2.5.68-1/include/asm-i386/fixmap.h 2003-04-21 02:12:17.000000000 -0700
+++ pgcl-2.5.68-1D/include/asm-i386/fixmap.h 2003-04-27 14:13:23.000000000 -0700
@@ -53,7 +53,17 @@
#define LAST_PKMAP_MASK (LAST_PKMAP-1)
enum fixed_addresses {
- FIX_HOLE,
+ /*
+ * leave a hole of exactly PAGE_SIZE at the top for CONFIG_HIGHMEM
+ * this makes things easier on core code; the math works out funny
+ */
+ FIX_HOLE = PAGE_MMUCOUNT > 1 ? PAGE_MMUCOUNT - 1 : 0,
+#ifdef CONFIG_HIGHMEM
+ FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
+ FIX_KMAP_END = FIX_KMAP_BEGIN+((KM_TYPE_NR*NR_CPUS+1)*PAGE_MMUCOUNT)-1,
+ FIX_PKMAP_BEGIN,
+ FIX_PKMAP_END = FIX_PKMAP_BEGIN + (LAST_PKMAP+1)*PAGE_MMUCOUNT - 1,
+#endif
FIX_VSYSCALL,
#ifdef CONFIG_X86_LOCAL_APIC
FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
@@ -74,12 +84,6 @@ enum fixed_addresses {
#ifdef CONFIG_X86_SUMMIT
FIX_CYCLONE_TIMER, /*cyclone timer register*/
#endif
-#ifdef CONFIG_HIGHMEM
- FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
- FIX_KMAP_END = FIX_KMAP_BEGIN+((KM_TYPE_NR*NR_CPUS+1)*PAGE_MMUCOUNT)-1,
- FIX_PKMAP_BEGIN,
- FIX_PKMAP_END = FIX_PKMAP_BEGIN + (LAST_PKMAP+1)*PAGE_MMUCOUNT - 1,
-#endif
#ifdef CONFIG_ACPI_BOOT
FIX_ACPI_BEGIN,
FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
diff -prauN pgcl-2.5.68-1/include/asm-i386/pci.h pgcl-2.5.68-1D/include/asm-i386/pci.h
--- pgcl-2.5.68-1/include/asm-i386/pci.h 2003-04-19 19:49:19.000000000 -0700
+++ pgcl-2.5.68-1D/include/asm-i386/pci.h 2003-04-27 14:16:31.000000000 -0700
@@ -67,13 +67,13 @@ pci_dac_page_to_dma(struct pci_dev *pdev
static __inline__ struct page *
pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
{
- return pfn_to_page(dma_addr >> PAGE_SHIFT);
+ return pfn_to_page(dma_addr >> MMUPAGE_SHIFT);
}
static __inline__ unsigned long
pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
{
- return (dma_addr & ~PAGE_MASK);
+ return dma_addr & ~PAGE_MASK;
}
static __inline__ void
diff -prauN pgcl-2.5.68-1/mm/memory.c pgcl-2.5.68-1D/mm/memory.c
--- pgcl-2.5.68-1/mm/memory.c 2003-04-21 02:12:17.000000000 -0700
+++ pgcl-2.5.68-1D/mm/memory.c 2003-04-27 13:21:29.000000000 -0700
@@ -1473,19 +1473,9 @@ do_anonymous_page(struct mm_struct *mm,
pr_debug("pte vaddr = 0x%lx\n", vaddr);
/*
- * this will not port to non-x86
- * it computes the offset from the possibly
- * non-PAGE_SIZE-aligned kmap_atomic() aperture
- * KMAP_END is the highest kmap_atomic() fixmap,
- * but __fix_to_virt(KMAP_END) is the lowest vaddr
- * A more portable solution needs to be found,
- * and it appears that aligning PTE kmap slots
- * would suffice.
+ * this computes the offset from the
+ * PAGE_SIZE-aligned kmap_atomic() aperture
*/
-#ifdef CONFIG_HIGHPTE
- if (vaddr >= __fix_to_virt(FIX_KMAP_END))
- vaddr -= __fix_to_virt(FIX_KMAP_END);
-#endif
vaddr &= PAGE_MASK;
pr_debug("vaddr offset = 0x%lx\n", vaddr);
diff -prauN pgcl-2.5.68-1/mm/page_alloc.c pgcl-2.5.68-1D/mm/page_alloc.c
--- pgcl-2.5.68-1/mm/page_alloc.c 2003-04-21 02:12:17.000000000 -0700
+++ pgcl-2.5.68-1D/mm/page_alloc.c 2003-04-27 11:55:59.000000000 -0700
@@ -1283,7 +1283,7 @@ static void __init free_area_init_core(s
memmap_init(lmem_map, size, nid, j, zone_start_pfn);
- zone_start_pfn += size;
+ zone_start_pfn += PAGE_MMUCOUNT*size;
lmem_map += size;
for (i = 0; ; i++) {
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