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SubjectRe: [PATCH 13/17] 4level support for sh
On Mon, Oct 25, 2004 at 11:22:33AM +0300, Paul Mundt wrote:
> On Mon, Oct 25, 2004 at 09:23:50AM +0200, Andreas Kleen wrote:
> > 4level support for sh
> >
> > Converted, but doesn't compile for other reasons
> >
> > Signed-off-by: Andi Kleen <ak@suse.de>
> >
> I'll see about fixing up the build. On another note, it looks like these
> got grouped in accidentally:

Yes, scripting error. Here's an update patch without the bogus hunks:

BTW separate objdir build seems to be totally broken on sh and
it adds random bogus symlinks to the source tree when you do
that. Perhaps you can fix that too.

------------------------------------------------------------------------------------------

4level support for sh

Converted, but doesn't compile for other reasons

Signed-off-by: Andi Kleen <ak@suse.de>

diff -urpN -X ../KDIFX linux-2.6.10rc1/arch/sh/mm/cache-sh4.c linux-2.6.10rc1-4level/arch/sh/mm/cache-sh4.c
--- linux-2.6.10rc1/arch/sh/mm/cache-sh4.c 2004-10-25 04:47:14.000000000 +0200
+++ linux-2.6.10rc1-4level/arch/sh/mm/cache-sh4.c 2004-10-25 04:48:09.000000000 +0200
@@ -301,7 +301,7 @@ void flush_cache_range(struct vm_area_st
unsigned long phys;
unsigned long d = 0;

- dir = pgd_offset(vma->vm_mm, p);
+ dir = pml4_pgd_offset(pml4_offset(vma->vm_mm, p), p);
pmd = pmd_offset(dir, p);

do {
@@ -354,7 +354,7 @@ void flush_cache_page(struct vm_area_str
pte_t entry;
unsigned long phys;

- dir = pgd_offset(vma->vm_mm, address);
+ dir = pml4_pgd_offset(pml4_offset(vma->vm_mm, address), address);
pmd = pmd_offset(dir, address);
if (pmd_none(*pmd) || pmd_bad(*pmd))
return;
diff -urpN -X ../KDIFX linux-2.6.10rc1/arch/sh/mm/fault.c linux-2.6.10rc1-4level/arch/sh/mm/fault.c
--- linux-2.6.10rc1/arch/sh/mm/fault.c 2004-10-19 01:55:06.000000000 +0200
+++ linux-2.6.10rc1-4level/arch/sh/mm/fault.c 2004-10-25 04:48:09.000000000 +0200
@@ -209,13 +209,13 @@ asmlinkage int __do_page_fault(struct pt
#endif

if (address >= P3SEG && address < addrmax)
- dir = pgd_offset_k(address);
+ dir = pml4_pgd_offset(pml4_offset_k(address), address);
else if (address >= TASK_SIZE)
return 1;
else if (!current->mm)
return 1;
else
- dir = pgd_offset(current->mm, address);
+ dir = pml4_pgd_offset(pml4_offset(current->mm,address),address);

pmd = pmd_offset(dir, address);
if (pmd_none(*pmd))
diff -urpN -X ../KDIFX linux-2.6.10rc1/arch/sh/mm/hugetlbpage.c linux-2.6.10rc1-4level/arch/sh/mm/hugetlbpage.c
--- linux-2.6.10rc1/arch/sh/mm/hugetlbpage.c 2004-06-16 12:22:52.000000000 +0200
+++ linux-2.6.10rc1-4level/arch/sh/mm/hugetlbpage.c 2004-10-25 04:48:09.000000000 +0200
@@ -30,7 +30,7 @@ static pte_t *huge_pte_alloc(struct mm_s
pmd_t *pmd;
pte_t *pte = NULL;

- pgd = pgd_offset(mm, addr);
+ pgd = pml4_pgd_offset(pml4_offset(mm, addr), addr);
if (pgd) {
pmd = pmd_alloc(mm, pgd, addr);
if (pmd)
@@ -45,7 +45,7 @@ static pte_t *huge_pte_offset(struct mm_
pmd_t *pmd;
pte_t *pte = NULL;

- pgd = pgd_offset(mm, addr);
+ pgd = pml4_pgd_offset(pml4_offset(mm, addr), addr);
if (pgd) {
pmd = pmd_offset(pgd, addr);
if (pmd)
diff -urpN -X ../KDIFX linux-2.6.10rc1/arch/sh/mm/init.c linux-2.6.10rc1-4level/arch/sh/mm/init.c
--- linux-2.6.10rc1/arch/sh/mm/init.c 2004-10-19 01:55:06.000000000 +0200
+++ linux-2.6.10rc1-4level/arch/sh/mm/init.c 2004-10-25 04:48:09.000000000 +0200
@@ -313,3 +313,14 @@ void free_initrd_mem(unsigned long start
}
#endif

+
+pgd_t *__pgd_alloc(struct mm_struct *mm, pml4_t *dummy, unsigned long addr)
+{
+ unsigned int pgd_size = (USER_PTRS_PER_PGD * sizeof(pgd_t));
+ pgd_t *pgd = (pgd_t *)kmalloc(pgd_size, GFP_KERNEL);
+
+ if (pgd)
+ memset(pgd, 0, pgd_size);
+
+ return pgd;
+}
diff -urpN -X ../KDIFX linux-2.6.10rc1/arch/sh/mm/ioremap.c linux-2.6.10rc1-4level/arch/sh/mm/ioremap.c
--- linux-2.6.10rc1/arch/sh/mm/ioremap.c 2004-10-25 04:47:14.000000000 +0200
+++ linux-2.6.10rc1-4level/arch/sh/mm/ioremap.c 2004-10-25 04:48:09.000000000 +0200
@@ -75,7 +75,7 @@ int remap_area_pages(unsigned long addre
unsigned long end = address + size;

phys_addr -= address;
- dir = pgd_offset_k(address);
+ dir = pml4_pgd_offset(pml4_offset_k(address), address);
flush_cache_all();
if (address >= end)
BUG();
diff -urpN -X ../KDIFX linux-2.6.10rc1/arch/sh/mm/pg-sh4.c linux-2.6.10rc1-4level/arch/sh/mm/pg-sh4.c
--- linux-2.6.10rc1/arch/sh/mm/pg-sh4.c 2004-08-15 19:45:12.000000000 +0200
+++ linux-2.6.10rc1-4level/arch/sh/mm/pg-sh4.c 2004-10-25 04:48:09.000000000 +0200
@@ -42,7 +42,7 @@ void clear_user_page(void *to, unsigned
_PAGE_HW_SHARED | _PAGE_FLAGS_HARD);
unsigned long phys_addr = PHYSADDR(to);
unsigned long p3_addr = P3SEG + (address & CACHE_ALIAS);
- pgd_t *dir = pgd_offset_k(p3_addr);
+ pgd_t *dir = pml4_pgd_offset(pml4_offset_k(p3_addr), p3_addr);
pmd_t *pmd = pmd_offset(dir, p3_addr);
pte_t *pte = pte_offset_kernel(pmd, p3_addr);
pte_t entry;
@@ -81,7 +81,7 @@ void copy_user_page(void *to, void *from
_PAGE_HW_SHARED | _PAGE_FLAGS_HARD);
unsigned long phys_addr = PHYSADDR(to);
unsigned long p3_addr = P3SEG + (address & CACHE_ALIAS);
- pgd_t *dir = pgd_offset_k(p3_addr);
+ pgd_t *dir = pml4_pgd_offset(pml4_offset_k(p3_addr), p3_addr);
pmd_t *pmd = pmd_offset(dir, p3_addr);
pte_t *pte = pte_offset_kernel(pmd, p3_addr);
pte_t entry;
diff -urpN -X ../KDIFX linux-2.6.10rc1/drivers/macintosh/via-pmu.c linux-2.6.10rc1-4level/drivers/macintosh/via-pmu.c
--- linux-2.6.10rc1/drivers/macintosh/via-pmu.c 2004-10-19 01:55:14.000000000 +0200
+++ linux-2.6.10rc1-4level/drivers/macintosh/via-pmu.c 2004-10-25 04:48:10.000000000 +0200
@@ -2504,7 +2504,7 @@ powerbook_sleep_grackle(void)
_set_L2CR(save_l2cr);

/* Restore userland MMU context */
- set_context(current->active_mm->context, current->active_mm->pgd);
+ set_context(current->active_mm->context, (pml4_t *)current->active_mm->pml4);

/* Power things up */
pmu_unlock();
@@ -2604,7 +2604,7 @@ powerbook_sleep_Core99(void)
_set_L3CR(save_l3cr);

/* Restore userland MMU context */
- set_context(current->active_mm->context, current->active_mm->pgd);
+ set_context(current->active_mm->context, (pgd_t *)current->active_mm->pml4);

/* Tell PMU we are ready */
pmu_unlock();
diff -urpN -X ../KDIFX linux-2.6.10rc1/include/asm-sh/mmu_context.h linux-2.6.10rc1-4level/include/asm-sh/mmu_context.h
--- linux-2.6.10rc1/include/asm-sh/mmu_context.h 2004-10-25 04:47:37.000000000 +0200
+++ linux-2.6.10rc1-4level/include/asm-sh/mmu_context.h 2004-10-25 04:48:10.000000000 +0200
@@ -133,7 +133,7 @@ static __inline__ void switch_mm(struct
struct task_struct *tsk)
{
if (likely(prev != next)) {
- unsigned long __pgdir = (unsigned long)next->pgd;
+ unsigned long __pgdir = (unsigned long)next->pml4;

__asm__ __volatile__("mov.l %0, %1"
: /* no output */
diff -urpN -X ../KDIFX linux-2.6.10rc1/include/asm-sh/page.h linux-2.6.10rc1-4level/include/asm-sh/page.h
--- linux-2.6.10rc1/include/asm-sh/page.h 2004-10-25 04:47:37.000000000 +0200
+++ linux-2.6.10rc1-4level/include/asm-sh/page.h 2004-10-25 04:48:10.000000000 +0200
@@ -139,6 +139,8 @@ static __inline__ int get_order(unsigned

#endif

+#include <asm-generic/nopml4-page.h>
+
#endif /* __KERNEL__ */

#endif /* __ASM_SH_PAGE_H */
diff -urpN -X ../KDIFX linux-2.6.10rc1/include/asm-sh/pgalloc.h linux-2.6.10rc1-4level/include/asm-sh/pgalloc.h
--- linux-2.6.10rc1/include/asm-sh/pgalloc.h 2004-08-15 19:45:49.000000000 +0200
+++ linux-2.6.10rc1-4level/include/asm-sh/pgalloc.h 2004-10-25 04:48:10.000000000 +0200
@@ -23,16 +23,6 @@ static inline void pmd_populate(struct m
/*
* Allocate and free page tables.
*/
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- unsigned int pgd_size = (USER_PTRS_PER_PGD * sizeof(pgd_t));
- pgd_t *pgd = (pgd_t *)kmalloc(pgd_size, GFP_KERNEL);
-
- if (pgd)
- memset(pgd, 0, pgd_size);
-
- return pgd;
-}

static inline void pgd_free(pgd_t *pgd)
{
@@ -90,4 +80,6 @@ static inline void pte_free(struct page
#define PG_mapped PG_arch_1
#endif

+#include <asm-generic/nopml4-pgalloc.h>
+
#endif /* __ASM_SH_PGALLOC_H */
diff -urpN -X ../KDIFX linux-2.6.10rc1/include/asm-sh/pgtable.h linux-2.6.10rc1-4level/include/asm-sh/pgtable.h
--- linux-2.6.10rc1/include/asm-sh/pgtable.h 2004-10-25 04:47:37.000000000 +0200
+++ linux-2.6.10rc1-4level/include/asm-sh/pgtable.h 2004-10-25 04:48:10.000000000 +0200
@@ -41,7 +41,7 @@ extern unsigned long empty_zero_page[102
#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1))

-#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
+#define USER_PGDS_IN_LAST_PML4 (TASK_SIZE/PGDIR_SIZE)
#define FIRST_USER_PGD_NR 0

#define PTE_PHYS_MASK 0x1ffff000
@@ -231,10 +231,7 @@ static inline pte_t pte_modify(pte_t pte

/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
-
-/* to find an entry in a kernel page-table-directory */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+#define pgd_index_k(address) pgd_index(address)

/* Find an entry in the third-level page table.. */
#define pte_index(address) \
@@ -293,5 +290,7 @@ extern inline pte_t ptep_get_and_clear(p

#include <asm-generic/pgtable.h>

+#include <asm-generic/nopml4-pgtable.h>
+
#endif /* __ASM_SH_PAGE_H */

-
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