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-rw-r--r--arch/x86/mm/highmem_32.c66
-rw-r--r--arch/x86/mm/init.c6
-rw-r--r--arch/x86/mm/iomap_32.c21
-rw-r--r--arch/x86/mm/ioremap.c19
-rw-r--r--arch/x86/mm/pageattr.c147
-rw-r--r--arch/x86/mm/pat.c5
-rw-r--r--arch/x86/mm/pgtable_32.c2
-rw-r--r--arch/x86/mm/tlb.c5
8 files changed, 155 insertions, 116 deletions
diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index f256e73542d..5bc5d1688c1 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c
@@ -19,49 +19,6 @@ void kunmap(struct page *page)
kunmap_high(page);
}
-static void debug_kmap_atomic_prot(enum km_type type)
-{
-#ifdef CONFIG_DEBUG_HIGHMEM
- static unsigned warn_count = 10;
-
- if (unlikely(warn_count == 0))
- return;
-
- if (unlikely(in_interrupt())) {
- if (in_irq()) {
- if (type != KM_IRQ0 && type != KM_IRQ1 &&
- type != KM_BIO_SRC_IRQ && type != KM_BIO_DST_IRQ &&
- type != KM_BOUNCE_READ) {
- WARN_ON(1);
- warn_count--;
- }
- } else if (!irqs_disabled()) { /* softirq */
- if (type != KM_IRQ0 && type != KM_IRQ1 &&
- type != KM_SOFTIRQ0 && type != KM_SOFTIRQ1 &&
- type != KM_SKB_SUNRPC_DATA &&
- type != KM_SKB_DATA_SOFTIRQ &&
- type != KM_BOUNCE_READ) {
- WARN_ON(1);
- warn_count--;
- }
- }
- }
-
- if (type == KM_IRQ0 || type == KM_IRQ1 || type == KM_BOUNCE_READ ||
- type == KM_BIO_SRC_IRQ || type == KM_BIO_DST_IRQ) {
- if (!irqs_disabled()) {
- WARN_ON(1);
- warn_count--;
- }
- } else if (type == KM_SOFTIRQ0 || type == KM_SOFTIRQ1) {
- if (irq_count() == 0 && !irqs_disabled()) {
- WARN_ON(1);
- warn_count--;
- }
- }
-#endif
-}
-
/*
* kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
* no global lock is needed and because the kmap code must perform a global TLB
@@ -81,8 +38,9 @@ void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot)
if (!PageHighMem(page))
return page_address(page);
- debug_kmap_atomic_prot(type);
+ debug_kmap_atomic(type);
+ debug_kmap_atomic(type);
idx = type + KM_TYPE_NR*smp_processor_id();
vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
BUG_ON(!pte_none(*(kmap_pte-idx)));
@@ -121,24 +79,8 @@ void kunmap_atomic(void *kvaddr, enum km_type type)
pagefault_enable();
}
-void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot)
-{
- enum fixed_addresses idx;
- unsigned long vaddr;
-
- pagefault_disable();
-
- debug_kmap_atomic_prot(type);
-
- idx = type + KM_TYPE_NR * smp_processor_id();
- vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
- set_pte(kmap_pte - idx, pfn_pte(pfn, prot));
- arch_flush_lazy_mmu_mode();
-
- return (void*) vaddr;
-}
-
-/* This is the same as kmap_atomic() but can map memory that doesn't
+/*
+ * This is the same as kmap_atomic() but can map memory that doesn't
* have a struct page associated with it.
*/
void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 15219e0d124..fd3da1dda1c 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -94,9 +94,9 @@ struct map_range {
#define NR_RANGE_MR 5
#endif
-static int save_mr(struct map_range *mr, int nr_range,
- unsigned long start_pfn, unsigned long end_pfn,
- unsigned long page_size_mask)
+static int __meminit save_mr(struct map_range *mr, int nr_range,
+ unsigned long start_pfn, unsigned long end_pfn,
+ unsigned long page_size_mask)
{
if (start_pfn < end_pfn) {
if (nr_range >= NR_RANGE_MR)
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 592984e5496..bff0c9032f8 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -18,8 +18,8 @@
#include <asm/iomap.h>
#include <asm/pat.h>
-#include <asm/highmem.h>
#include <linux/module.h>
+#include <linux/highmem.h>
int is_io_mapping_possible(resource_size_t base, unsigned long size)
{
@@ -32,7 +32,23 @@ int is_io_mapping_possible(resource_size_t base, unsigned long size)
}
EXPORT_SYMBOL_GPL(is_io_mapping_possible);
-/* Map 'pfn' using fixed map 'type' and protections 'prot'
+void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot)
+{
+ enum fixed_addresses idx;
+ unsigned long vaddr;
+
+ pagefault_disable();
+
+ idx = type + KM_TYPE_NR * smp_processor_id();
+ vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
+ set_pte(kmap_pte - idx, pfn_pte(pfn, prot));
+ arch_flush_lazy_mmu_mode();
+
+ return (void *)vaddr;
+}
+
+/*
+ * Map 'pfn' using fixed map 'type' and protections 'prot'
*/
void *
iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot)
@@ -56,6 +72,7 @@ iounmap_atomic(void *kvaddr, enum km_type type)
unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
+ debug_kmap_atomic(type);
/*
* Force other mappings to Oops if they'll try to access this pte
* without first remap it. Keeping stale mappings around is a bad idea
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index aca924a30ee..0dfa09d69e8 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -22,13 +22,17 @@
#include <asm/pgalloc.h>
#include <asm/pat.h>
-#ifdef CONFIG_X86_64
-
-static inline int phys_addr_valid(unsigned long addr)
+static inline int phys_addr_valid(resource_size_t addr)
{
- return addr < (1UL << boot_cpu_data.x86_phys_bits);
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+ return !(addr >> boot_cpu_data.x86_phys_bits);
+#else
+ return 1;
+#endif
}
+#ifdef CONFIG_X86_64
+
unsigned long __phys_addr(unsigned long x)
{
if (x >= __START_KERNEL_map) {
@@ -65,11 +69,6 @@ EXPORT_SYMBOL(__virt_addr_valid);
#else
-static inline int phys_addr_valid(unsigned long addr)
-{
- return 1;
-}
-
#ifdef CONFIG_DEBUG_VIRTUAL
unsigned long __phys_addr(unsigned long x)
{
@@ -517,7 +516,7 @@ void __init early_ioremap_init(void)
printk(KERN_INFO "early_ioremap_init()\n");
for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
- slot_virt[i] = fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
+ slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
memset(bm_pte, 0, sizeof(bm_pte));
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 9c4294986af..d71e1b636ce 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -16,6 +16,7 @@
#include <asm/processor.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
+#include <asm/setup.h>
#include <asm/uaccess.h>
#include <asm/pgalloc.h>
#include <asm/proto.h>
@@ -33,6 +34,7 @@ struct cpa_data {
unsigned long pfn;
unsigned force_split : 1;
int curpage;
+ struct page **pages;
};
/*
@@ -45,6 +47,7 @@ static DEFINE_SPINLOCK(cpa_lock);
#define CPA_FLUSHTLB 1
#define CPA_ARRAY 2
+#define CPA_PAGES_ARRAY 4
#ifdef CONFIG_PROC_FS
static unsigned long direct_pages_count[PG_LEVEL_NUM];
@@ -95,7 +98,7 @@ static inline unsigned long highmap_start_pfn(void)
static inline unsigned long highmap_end_pfn(void)
{
- return __pa(roundup((unsigned long)_end, PMD_SIZE)) >> PAGE_SHIFT;
+ return __pa(roundup(_brk_end, PMD_SIZE)) >> PAGE_SHIFT;
}
#endif
@@ -201,10 +204,10 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
}
}
-static void cpa_flush_array(unsigned long *start, int numpages, int cache)
+static void cpa_flush_array(unsigned long *start, int numpages, int cache,
+ int in_flags, struct page **pages)
{
unsigned int i, level;
- unsigned long *addr;
BUG_ON(irqs_disabled());
@@ -225,14 +228,22 @@ static void cpa_flush_array(unsigned long *start, int numpages, int cache)
* will cause all other CPUs to flush the same
* cachelines:
*/
- for (i = 0, addr = start; i < numpages; i++, addr++) {
- pte_t *pte = lookup_address(*addr, &level);
+ for (i = 0; i < numpages; i++) {
+ unsigned long addr;
+ pte_t *pte;
+
+ if (in_flags & CPA_PAGES_ARRAY)
+ addr = (unsigned long)page_address(pages[i]);
+ else
+ addr = start[i];
+
+ pte = lookup_address(addr, &level);
/*
* Only flush present addresses:
*/
if (pte && (pte_val(*pte) & _PAGE_PRESENT))
- clflush_cache_range((void *) *addr, PAGE_SIZE);
+ clflush_cache_range((void *)addr, PAGE_SIZE);
}
}
@@ -584,7 +595,9 @@ static int __change_page_attr(struct cpa_data *cpa, int primary)
unsigned int level;
pte_t *kpte, old_pte;
- if (cpa->flags & CPA_ARRAY)
+ if (cpa->flags & CPA_PAGES_ARRAY)
+ address = (unsigned long)page_address(cpa->pages[cpa->curpage]);
+ else if (cpa->flags & CPA_ARRAY)
address = cpa->vaddr[cpa->curpage];
else
address = *cpa->vaddr;
@@ -687,7 +700,9 @@ static int cpa_process_alias(struct cpa_data *cpa)
* No need to redo, when the primary call touched the direct
* mapping already:
*/
- if (cpa->flags & CPA_ARRAY)
+ if (cpa->flags & CPA_PAGES_ARRAY)
+ vaddr = (unsigned long)page_address(cpa->pages[cpa->curpage]);
+ else if (cpa->flags & CPA_ARRAY)
vaddr = cpa->vaddr[cpa->curpage];
else
vaddr = *cpa->vaddr;
@@ -698,7 +713,7 @@ static int cpa_process_alias(struct cpa_data *cpa)
alias_cpa = *cpa;
temp_cpa_vaddr = (unsigned long) __va(cpa->pfn << PAGE_SHIFT);
alias_cpa.vaddr = &temp_cpa_vaddr;
- alias_cpa.flags &= ~CPA_ARRAY;
+ alias_cpa.flags &= ~(CPA_PAGES_ARRAY | CPA_ARRAY);
ret = __change_page_attr_set_clr(&alias_cpa, 0);
@@ -711,7 +726,7 @@ static int cpa_process_alias(struct cpa_data *cpa)
* No need to redo, when the primary call touched the high
* mapping already:
*/
- if (within(vaddr, (unsigned long) _text, (unsigned long) _end))
+ if (within(vaddr, (unsigned long) _text, _brk_end))
return 0;
/*
@@ -724,7 +739,7 @@ static int cpa_process_alias(struct cpa_data *cpa)
alias_cpa = *cpa;
temp_cpa_vaddr = (cpa->pfn << PAGE_SHIFT) + __START_KERNEL_map - phys_base;
alias_cpa.vaddr = &temp_cpa_vaddr;
- alias_cpa.flags &= ~CPA_ARRAY;
+ alias_cpa.flags &= ~(CPA_PAGES_ARRAY | CPA_ARRAY);
/*
* The high mapping range is imprecise, so ignore the return value.
@@ -745,7 +760,7 @@ static int __change_page_attr_set_clr(struct cpa_data *cpa, int checkalias)
*/
cpa->numpages = numpages;
/* for array changes, we can't use large page */
- if (cpa->flags & CPA_ARRAY)
+ if (cpa->flags & (CPA_ARRAY | CPA_PAGES_ARRAY))
cpa->numpages = 1;
if (!debug_pagealloc)
@@ -769,7 +784,7 @@ static int __change_page_attr_set_clr(struct cpa_data *cpa, int checkalias)
*/
BUG_ON(cpa->numpages > numpages);
numpages -= cpa->numpages;
- if (cpa->flags & CPA_ARRAY)
+ if (cpa->flags & (CPA_PAGES_ARRAY | CPA_ARRAY))
cpa->curpage++;
else
*cpa->vaddr += cpa->numpages * PAGE_SIZE;
@@ -786,7 +801,8 @@ static inline int cache_attr(pgprot_t attr)
static int change_page_attr_set_clr(unsigned long *addr, int numpages,
pgprot_t mask_set, pgprot_t mask_clr,
- int force_split, int array)
+ int force_split, int in_flag,
+ struct page **pages)
{
struct cpa_data cpa;
int ret, cache, checkalias;
@@ -801,15 +817,7 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
return 0;
/* Ensure we are PAGE_SIZE aligned */
- if (!array) {
- if (*addr & ~PAGE_MASK) {
- *addr &= PAGE_MASK;
- /*
- * People should not be passing in unaligned addresses:
- */
- WARN_ON_ONCE(1);
- }
- } else {
+ if (in_flag & CPA_ARRAY) {
int i;
for (i = 0; i < numpages; i++) {
if (addr[i] & ~PAGE_MASK) {
@@ -817,6 +825,18 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
WARN_ON_ONCE(1);
}
}
+ } else if (!(in_flag & CPA_PAGES_ARRAY)) {
+ /*
+ * in_flag of CPA_PAGES_ARRAY implies it is aligned.
+ * No need to cehck in that case
+ */
+ if (*addr & ~PAGE_MASK) {
+ *addr &= PAGE_MASK;
+ /*
+ * People should not be passing in unaligned addresses:
+ */
+ WARN_ON_ONCE(1);
+ }
}
/* Must avoid aliasing mappings in the highmem code */
@@ -832,6 +852,7 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
arch_flush_lazy_mmu_mode();
cpa.vaddr = addr;
+ cpa.pages = pages;
cpa.numpages = numpages;
cpa.mask_set = mask_set;
cpa.mask_clr = mask_clr;
@@ -839,8 +860,8 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
cpa.curpage = 0;
cpa.force_split = force_split;
- if (array)
- cpa.flags |= CPA_ARRAY;
+ if (in_flag & (CPA_ARRAY | CPA_PAGES_ARRAY))
+ cpa.flags |= in_flag;
/* No alias checking for _NX bit modifications */
checkalias = (pgprot_val(mask_set) | pgprot_val(mask_clr)) != _PAGE_NX;
@@ -866,9 +887,10 @@ static int change_page_attr_set_clr(unsigned long *addr, int numpages,
* wbindv):
*/
if (!ret && cpu_has_clflush) {
- if (cpa.flags & CPA_ARRAY)
- cpa_flush_array(addr, numpages, cache);
- else
+ if (cpa.flags & (CPA_PAGES_ARRAY | CPA_ARRAY)) {
+ cpa_flush_array(addr, numpages, cache,
+ cpa.flags, pages);
+ } else
cpa_flush_range(*addr, numpages, cache);
} else
cpa_flush_all(cache);
@@ -888,14 +910,28 @@ static inline int change_page_attr_set(unsigned long *addr, int numpages,
pgprot_t mask, int array)
{
return change_page_attr_set_clr(addr, numpages, mask, __pgprot(0), 0,
- array);
+ (array ? CPA_ARRAY : 0), NULL);
}
static inline int change_page_attr_clear(unsigned long *addr, int numpages,
pgprot_t mask, int array)
{
return change_page_attr_set_clr(addr, numpages, __pgprot(0), mask, 0,
- array);
+ (array ? CPA_ARRAY : 0), NULL);
+}
+
+static inline int cpa_set_pages_array(struct page **pages, int numpages,
+ pgprot_t mask)
+{
+ return change_page_attr_set_clr(NULL, numpages, mask, __pgprot(0), 0,
+ CPA_PAGES_ARRAY, pages);
+}
+
+static inline int cpa_clear_pages_array(struct page **pages, int numpages,
+ pgprot_t mask)
+{
+ return change_page_attr_set_clr(NULL, numpages, __pgprot(0), mask, 0,
+ CPA_PAGES_ARRAY, pages);
}
int _set_memory_uc(unsigned long addr, int numpages)
@@ -1043,7 +1079,7 @@ int set_memory_np(unsigned long addr, int numpages)
int set_memory_4k(unsigned long addr, int numpages)
{
return change_page_attr_set_clr(&addr, numpages, __pgprot(0),
- __pgprot(0), 1, 0);
+ __pgprot(0), 1, 0, NULL);
}
int set_pages_uc(struct page *page, int numpages)
@@ -1054,6 +1090,35 @@ int set_pages_uc(struct page *page, int numpages)
}
EXPORT_SYMBOL(set_pages_uc);
+int set_pages_array_uc(struct page **pages, int addrinarray)
+{
+ unsigned long start;
+ unsigned long end;
+ int i;
+ int free_idx;
+
+ for (i = 0; i < addrinarray; i++) {
+ start = (unsigned long)page_address(pages[i]);
+ end = start + PAGE_SIZE;
+ if (reserve_memtype(start, end, _PAGE_CACHE_UC_MINUS, NULL))
+ goto err_out;
+ }
+
+ if (cpa_set_pages_array(pages, addrinarray,
+ __pgprot(_PAGE_CACHE_UC_MINUS)) == 0) {
+ return 0; /* Success */
+ }
+err_out:
+ free_idx = i;
+ for (i = 0; i < free_idx; i++) {
+ start = (unsigned long)page_address(pages[i]);
+ end = start + PAGE_SIZE;
+ free_memtype(start, end);
+ }
+ return -EINVAL;
+}
+EXPORT_SYMBOL(set_pages_array_uc);
+
int set_pages_wb(struct page *page, int numpages)
{
unsigned long addr = (unsigned long)page_address(page);
@@ -1062,6 +1127,26 @@ int set_pages_wb(struct page *page, int numpages)
}
EXPORT_SYMBOL(set_pages_wb);
+int set_pages_array_wb(struct page **pages, int addrinarray)
+{
+ int retval;
+ unsigned long start;
+ unsigned long end;
+ int i;
+
+ retval = cpa_clear_pages_array(pages, addrinarray,
+ __pgprot(_PAGE_CACHE_MASK));
+
+ for (i = 0; i < addrinarray; i++) {
+ start = (unsigned long)page_address(pages[i]);
+ end = start + PAGE_SIZE;
+ free_memtype(start, end);
+ }
+
+ return retval;
+}
+EXPORT_SYMBOL(set_pages_array_wb);
+
int set_pages_x(struct page *page, int numpages)
{
unsigned long addr = (unsigned long)page_address(page);
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 2ed37158012..640339ee4fb 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -677,10 +677,11 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
is_ram = pat_pagerange_is_ram(paddr, paddr + size);
/*
- * reserve_pfn_range() doesn't support RAM pages.
+ * reserve_pfn_range() doesn't support RAM pages. Maintain the current
+ * behavior with RAM pages by returning success.
*/
if (is_ram != 0)
- return -EINVAL;
+ return 0;
ret = reserve_memtype(paddr, paddr + size, want_flags, &flags);
if (ret)
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index f2e477c91c1..46c8834aedc 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -50,7 +50,7 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pteval)
}
pte = pte_offset_kernel(pmd, vaddr);
if (pte_val(pteval))
- set_pte_present(&init_mm, vaddr, pte, pteval);
+ set_pte_at(&init_mm, vaddr, pte, pteval);
else
pte_clear(&init_mm, vaddr, pte);
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index a654d59e448..821e97017e9 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -187,11 +187,6 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask,
cpumask, cpumask_of(smp_processor_id()));
/*
- * Make the above memory operations globally visible before
- * sending the IPI.
- */
- smp_mb();
- /*
* We have to send the IPI only to
* CPUs affected.
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-20 09:05:11 +0000