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Diffstat (limited to 'arch/m32r/mm')
-rw-r--r--arch/m32r/mm/discontig.c22
-rw-r--r--arch/m32r/mm/fault-nommu.c3
-rw-r--r--arch/m32r/mm/fault.c35
-rw-r--r--arch/m32r/mm/init.c93
-rw-r--r--arch/m32r/mm/mmu.S12
5 files changed, 47 insertions, 118 deletions
diff --git a/arch/m32r/mm/discontig.c b/arch/m32r/mm/discontig.c
index cbc3c4c5456..27196303ce3 100644
--- a/arch/m32r/mm/discontig.c
+++ b/arch/m32r/mm/discontig.c
@@ -32,6 +32,9 @@ typedef struct {
} mem_prof_t;
static mem_prof_t mem_prof[MAX_NUMNODES];
+extern unsigned long memory_start;
+extern unsigned long memory_end;
+
static void __init mem_prof_init(void)
{
unsigned long start_pfn, holes, free_pfn;
@@ -42,7 +45,7 @@ static void __init mem_prof_init(void)
/* Node#0 SDRAM */
mp = &mem_prof[0];
mp->start_pfn = PFN_UP(CONFIG_MEMORY_START);
- mp->pages = PFN_DOWN(CONFIG_MEMORY_SIZE);
+ mp->pages = PFN_DOWN(memory_end - memory_start);
mp->holes = 0;
mp->free_pfn = PFN_UP(__pa(_end));
@@ -111,9 +114,9 @@ unsigned long __init setup_memory(void)
initrd_start, INITRD_SIZE);
} else {
printk("initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
+ "(0x%08lx > 0x%08llx)\ndisabling initrd\n",
INITRD_START + INITRD_SIZE,
- PFN_PHYS(max_low_pfn));
+ (unsigned long long)PFN_PHYS(max_low_pfn));
initrd_start = 0;
}
@@ -126,11 +129,10 @@ unsigned long __init setup_memory(void)
#define START_PFN(nid) (NODE_DATA(nid)->bdata->node_min_pfn)
#define MAX_LOW_PFN(nid) (NODE_DATA(nid)->bdata->node_low_pfn)
-unsigned long __init zone_sizes_init(void)
+void __init zone_sizes_init(void)
{
unsigned long zones_size[MAX_NR_ZONES], zholes_size[MAX_NR_ZONES];
unsigned long low, start_pfn;
- unsigned long holes = 0;
int nid, i;
mem_prof_t *mp;
@@ -144,8 +146,8 @@ unsigned long __init zone_sizes_init(void)
low = MAX_LOW_PFN(nid);
zones_size[ZONE_DMA] = low - start_pfn;
zholes_size[ZONE_DMA] = mp->holes;
- holes += zholes_size[ZONE_DMA];
+ node_set_state(nid, N_NORMAL_MEMORY);
free_area_init_node(nid, zones_size, start_pfn, zholes_size);
}
@@ -154,9 +156,7 @@ unsigned long __init zone_sizes_init(void)
* Use all area of internal RAM.
* see __alloc_pages()
*/
- NODE_DATA(1)->node_zones->pages_min = 0;
- NODE_DATA(1)->node_zones->pages_low = 0;
- NODE_DATA(1)->node_zones->pages_high = 0;
-
- return holes;
+ NODE_DATA(1)->node_zones->watermark[WMARK_MIN] = 0;
+ NODE_DATA(1)->node_zones->watermark[WMARK_LOW] = 0;
+ NODE_DATA(1)->node_zones->watermark[WMARK_HIGH] = 0;
}
diff --git a/arch/m32r/mm/fault-nommu.c b/arch/m32r/mm/fault-nommu.c
index 88469178ea6..80f18cc6f54 100644
--- a/arch/m32r/mm/fault-nommu.c
+++ b/arch/m32r/mm/fault-nommu.c
@@ -22,7 +22,6 @@
#include <linux/vt_kern.h> /* For unblank_screen() */
#include <asm/m32r.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/pgtable.h>
@@ -95,7 +94,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
* update_mmu_cache()
*======================================================================*/
void update_mmu_cache(struct vm_area_struct *vma, unsigned long addr,
- pte_t pte)
+ pte_t *ptep)
{
BUG();
}
diff --git a/arch/m32r/mm/fault.c b/arch/m32r/mm/fault.c
index 4a71df4c1b3..e9c6a8014bd 100644
--- a/arch/m32r/mm/fault.c
+++ b/arch/m32r/mm/fault.c
@@ -26,7 +26,6 @@
#include <linux/module.h>
#include <asm/m32r.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/hardirq.h>
#include <asm/mmu_context.h>
@@ -79,7 +78,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
struct mm_struct *mm;
struct vm_area_struct * vma;
unsigned long page, addr;
- int write;
+ unsigned long flags = 0;
int fault;
siginfo_t info;
@@ -118,9 +117,12 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
if (in_atomic() || !mm)
goto bad_area_nosemaphore;
+ if (error_code & ACE_USERMODE)
+ flags |= FAULT_FLAG_USER;
+
/* When running in the kernel we expect faults to occur only to
* addresses in user space. All other faults represent errors in the
- * kernel and should generate an OOPS. Unfortunatly, in the case of an
+ * kernel and should generate an OOPS. Unfortunately, in the case of an
* erroneous fault occurring in a code path which already holds mmap_sem
* we will deadlock attempting to validate the fault against the
* address space. Luckily the kernel only validly references user
@@ -128,7 +130,7 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
* exceptions table.
*
* As the vast majority of faults will be valid we will only perform
- * the source reference check when there is a possibilty of a deadlock.
+ * the source reference check when there is a possibility of a deadlock.
* Attempt to lock the address space, if we cannot we then validate the
* source. If this is invalid we can skip the address space check,
* thus avoiding the deadlock.
@@ -167,14 +169,13 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code,
*/
good_area:
info.si_code = SEGV_ACCERR;
- write = 0;
switch (error_code & (ACE_WRITE|ACE_PROTECTION)) {
default: /* 3: write, present */
/* fall through */
case ACE_WRITE: /* write, not present */
if (!(vma->vm_flags & VM_WRITE))
goto bad_area;
- write++;
+ flags |= FAULT_FLAG_WRITE;
break;
case ACE_PROTECTION: /* read, present */
case 0: /* read, not present */
@@ -188,7 +189,6 @@ good_area:
if ((error_code & ACE_INSTRUCTION) && !(vma->vm_flags & VM_EXEC))
goto bad_area;
-survive:
/*
* If for any reason at all we couldn't handle the fault,
* make sure we exit gracefully rather than endlessly redo
@@ -196,7 +196,7 @@ survive:
*/
addr = (address & PAGE_MASK);
set_thread_fault_code(error_code);
- fault = handle_mm_fault(mm, vma, addr, write);
+ fault = handle_mm_fault(mm, vma, addr, flags);
if (unlikely(fault & VM_FAULT_ERROR)) {
if (fault & VM_FAULT_OOM)
goto out_of_memory;
@@ -271,15 +271,10 @@ no_context:
*/
out_of_memory:
up_read(&mm->mmap_sem);
- if (is_global_init(tsk)) {
- yield();
- down_read(&mm->mmap_sem);
- goto survive;
- }
- printk("VM: killing process %s\n", tsk->comm);
- if (error_code & ACE_USERMODE)
- do_group_exit(SIGKILL);
- goto no_context;
+ if (!(error_code & ACE_USERMODE))
+ goto no_context;
+ pagefault_out_of_memory();
+ return;
do_sigbus:
up_read(&mm->mmap_sem);
@@ -336,7 +331,7 @@ vmalloc_fault:
addr = (address & PAGE_MASK);
set_thread_fault_code(error_code);
- update_mmu_cache(NULL, addr, *pte_k);
+ update_mmu_cache(NULL, addr, pte_k);
set_thread_fault_code(0);
return;
}
@@ -349,7 +344,7 @@ vmalloc_fault:
#define ITLB_END (unsigned long *)(ITLB_BASE + (NR_TLB_ENTRIES * 8))
#define DTLB_END (unsigned long *)(DTLB_BASE + (NR_TLB_ENTRIES * 8))
void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr,
- pte_t pte)
+ pte_t *ptep)
{
volatile unsigned long *entry1, *entry2;
unsigned long pte_data, flags;
@@ -365,7 +360,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long vaddr,
vaddr = (vaddr & PAGE_MASK) | get_asid();
- pte_data = pte_val(pte);
+ pte_data = pte_val(*ptep);
#ifdef CONFIG_CHIP_OPSP
entry1 = (unsigned long *)ITLB_BASE;
diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
index 24d429f9358..0d4146f644d 100644
--- a/arch/m32r/mm/init.c
+++ b/arch/m32r/mm/init.c
@@ -19,6 +19,7 @@
#include <linux/bitops.h>
#include <linux/nodemask.h>
#include <linux/pfn.h>
+#include <linux/gfp.h>
#include <asm/types.h>
#include <asm/processor.h>
#include <asm/page.h>
@@ -27,15 +28,10 @@
#include <asm/mmu_context.h>
#include <asm/setup.h>
#include <asm/tlb.h>
-
-/* References to section boundaries */
-extern char _text, _etext, _edata;
-extern char __init_begin, __init_end;
+#include <asm/sections.h>
pgd_t swapper_pg_dir[1024];
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
-
/*
* Cache of MMU context last used.
*/
@@ -44,7 +40,6 @@ unsigned long mmu_context_cache_dat;
#else
unsigned long mmu_context_cache_dat[NR_CPUS];
#endif
-static unsigned long hole_pages;
/*
* function prototype
@@ -61,7 +56,7 @@ void free_initrd_mem(unsigned long, unsigned long);
#define MAX_LOW_PFN(nid) (NODE_DATA(nid)->bdata->node_low_pfn)
#ifndef CONFIG_DISCONTIGMEM
-unsigned long __init zone_sizes_init(void)
+void __init zone_sizes_init(void)
{
unsigned long zones_size[MAX_NR_ZONES] = {0, };
unsigned long max_dma;
@@ -87,11 +82,9 @@ unsigned long __init zone_sizes_init(void)
#endif /* CONFIG_MMU */
free_area_init_node(0, zones_size, start_pfn, 0);
-
- return 0;
}
#else /* CONFIG_DISCONTIGMEM */
-extern unsigned long zone_sizes_init(void);
+extern void zone_sizes_init(void);
#endif /* CONFIG_DISCONTIGMEM */
/*======================================================================*
@@ -109,24 +102,7 @@ void __init paging_init(void)
for (i = 0 ; i < USER_PTRS_PER_PGD * 2 ; i++)
pgd_val(pg_dir[i]) = 0;
#endif /* CONFIG_MMU */
- hole_pages = zone_sizes_init();
-}
-
-int __init reservedpages_count(void)
-{
- int reservedpages, nid, i;
-
- reservedpages = 0;
- for_each_online_node(nid) {
- unsigned long flags;
- pgdat_resize_lock(NODE_DATA(nid), &flags);
- for (i = 0 ; i < MAX_LOW_PFN(nid) - START_PFN(nid) ; i++)
- if (PageReserved(nid_page_nr(nid, i)))
- reservedpages++;
- pgdat_resize_unlock(NODE_DATA(nid), &flags);
- }
-
- return reservedpages;
+ zone_sizes_init();
}
/*======================================================================*
@@ -135,48 +111,20 @@ int __init reservedpages_count(void)
*======================================================================*/
void __init mem_init(void)
{
- int codesize, reservedpages, datasize, initsize;
- int nid;
#ifndef CONFIG_MMU
extern unsigned long memory_end;
-#endif
-
- num_physpages = 0;
- for_each_online_node(nid)
- num_physpages += MAX_LOW_PFN(nid) - START_PFN(nid) + 1;
-
- num_physpages -= hole_pages;
-#ifndef CONFIG_DISCONTIGMEM
- max_mapnr = num_physpages;
-#endif /* CONFIG_DISCONTIGMEM */
-
-#ifdef CONFIG_MMU
- high_memory = (void *)__va(PFN_PHYS(MAX_LOW_PFN(0)));
-#else
high_memory = (void *)(memory_end & PAGE_MASK);
+#else
+ high_memory = (void *)__va(PFN_PHYS(MAX_LOW_PFN(0)));
#endif /* CONFIG_MMU */
/* clear the zero-page */
memset(empty_zero_page, 0, PAGE_SIZE);
- /* this will put all low memory onto the freelists */
- for_each_online_node(nid)
- totalram_pages += free_all_bootmem_node(NODE_DATA(nid));
-
- reservedpages = reservedpages_count() - hole_pages;
- codesize = (unsigned long) &_etext - (unsigned long)&_text;
- datasize = (unsigned long) &_edata - (unsigned long)&_etext;
- initsize = (unsigned long) &__init_end - (unsigned long)&__init_begin;
-
- printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
- "%dk reserved, %dk data, %dk init)\n",
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- num_physpages << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- initsize >> 10);
+ set_max_mapnr(get_num_physpages());
+ free_all_bootmem();
+ mem_init_print_info(NULL);
}
/*======================================================================*
@@ -185,17 +133,7 @@ void __init mem_init(void)
*======================================================================*/
void free_initmem(void)
{
- unsigned long addr;
-
- addr = (unsigned long)(&__init_begin);
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- init_page_count(virt_to_page(addr));
- free_page(addr);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n", \
- (int)(&__init_end - &__init_begin) >> 10);
+ free_initmem_default(-1);
}
#ifdef CONFIG_BLK_DEV_INITRD
@@ -205,13 +143,6 @@ void free_initmem(void)
*======================================================================*/
void free_initrd_mem(unsigned long start, unsigned long end)
{
- unsigned long p;
- for (p = start; p < end; p += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(p));
- init_page_count(virt_to_page(p));
- free_page(p);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+ free_reserved_area((void *)start, (void *)end, -1, "initrd");
}
#endif
diff --git a/arch/m32r/mm/mmu.S b/arch/m32r/mm/mmu.S
index 49a6d16a3d5..e9491a5ae82 100644
--- a/arch/m32r/mm/mmu.S
+++ b/arch/m32r/mm/mmu.S
@@ -150,9 +150,13 @@ ENTRY(tme_handler)
; pmd = pmd_offset(pgd, address);
ld r3, @r3 ; r3: pmd data
- ldi r2, #-4096
beqz r3, 3f ; pmd_none(*pmd) ?
+ and3 r2, r3, #0xfff
+ add3 r2, r2, #-355 ; _KERNPG_TABLE(=0x163)
+ bnez r2, 3f ; pmd_bad(*pmd) ?
+ ldi r2, #-4096
+
; pte = pte_offset(pmd, address);
and r2, r3 ; r2: pte base addr
srl3 r3, r0, #10
@@ -263,9 +267,9 @@ ENTRY(tme_handler)
ld r1, @r3 ; r1: pmd
beqz r1, 3f ; pmd_none(*pmd) ?
;
- and3 r1, r1, #0xeff
- ldi r4, #611 ; _KERNPG_TABLE(=611)
- bne r1, r4, 3f ; !pmd_bad(*pmd) ?
+ and3 r1, r1, #0x3ff
+ ldi r4, #0x163 ; _KERNPG_TABLE(=0x163)
+ bne r1, r4, 3f ; pmd_bad(*pmd) ?
.fillinsn
4:
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:58:00 +0000