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-rw-r--r--arch/x86/mm/extable.c142
-rw-r--r--arch/x86/mm/fault.c2
-rw-r--r--arch/x86/mm/init.c37
-rw-r--r--arch/x86/mm/init_64.c23
-rw-r--r--arch/x86/mm/numa.c32
-rw-r--r--arch/x86/mm/numa_emulation.c12
-rw-r--r--arch/x86/mm/pat.c98
-rw-r--r--arch/x86/mm/srat.c5
-rw-r--r--arch/x86/mm/tlb.c16
9 files changed, 263 insertions, 104 deletions
diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
index 1fb85dbe390a..903ec1e9c326 100644
--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c
@@ -1,11 +1,23 @@
#include <linux/module.h>
#include <linux/spinlock.h>
+#include <linux/sort.h>
#include <asm/uaccess.h>
+static inline unsigned long
+ex_insn_addr(const struct exception_table_entry *x)
+{
+ return (unsigned long)&x->insn + x->insn;
+}
+static inline unsigned long
+ex_fixup_addr(const struct exception_table_entry *x)
+{
+ return (unsigned long)&x->fixup + x->fixup;
+}
int fixup_exception(struct pt_regs *regs)
{
const struct exception_table_entry *fixup;
+ unsigned long new_ip;
#ifdef CONFIG_PNPBIOS
if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) {
@@ -23,15 +35,135 @@ int fixup_exception(struct pt_regs *regs)
fixup = search_exception_tables(regs->ip);
if (fixup) {
- /* If fixup is less than 16, it means uaccess error */
- if (fixup->fixup < 16) {
+ new_ip = ex_fixup_addr(fixup);
+
+ if (fixup->fixup - fixup->insn >= 0x7ffffff0 - 4) {
+ /* Special hack for uaccess_err */
current_thread_info()->uaccess_err = 1;
- regs->ip += fixup->fixup;
- return 1;
+ new_ip -= 0x7ffffff0;
}
- regs->ip = fixup->fixup;
+ regs->ip = new_ip;
return 1;
}
return 0;
}
+
+/* Restricted version used during very early boot */
+int __init early_fixup_exception(unsigned long *ip)
+{
+ const struct exception_table_entry *fixup;
+ unsigned long new_ip;
+
+ fixup = search_exception_tables(*ip);
+ if (fixup) {
+ new_ip = ex_fixup_addr(fixup);
+
+ if (fixup->fixup - fixup->insn >= 0x7ffffff0 - 4) {
+ /* uaccess handling not supported during early boot */
+ return 0;
+ }
+
+ *ip = new_ip;
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Search one exception table for an entry corresponding to the
+ * given instruction address, and return the address of the entry,
+ * or NULL if none is found.
+ * We use a binary search, and thus we assume that the table is
+ * already sorted.
+ */
+const struct exception_table_entry *
+search_extable(const struct exception_table_entry *first,
+ const struct exception_table_entry *last,
+ unsigned long value)
+{
+ while (first <= last) {
+ const struct exception_table_entry *mid;
+ unsigned long addr;
+
+ mid = ((last - first) >> 1) + first;
+ addr = ex_insn_addr(mid);
+ if (addr < value)
+ first = mid + 1;
+ else if (addr > value)
+ last = mid - 1;
+ else
+ return mid;
+ }
+ return NULL;
+}
+
+/*
+ * The exception table needs to be sorted so that the binary
+ * search that we use to find entries in it works properly.
+ * This is used both for the kernel exception table and for
+ * the exception tables of modules that get loaded.
+ *
+ */
+static int cmp_ex(const void *a, const void *b)
+{
+ const struct exception_table_entry *x = a, *y = b;
+
+ /*
+ * This value will always end up fittin in an int, because on
+ * both i386 and x86-64 the kernel symbol-reachable address
+ * space is < 2 GiB.
+ *
+ * This compare is only valid after normalization.
+ */
+ return x->insn - y->insn;
+}
+
+void sort_extable(struct exception_table_entry *start,
+ struct exception_table_entry *finish)
+{
+ struct exception_table_entry *p;
+ int i;
+
+ /* Convert all entries to being relative to the start of the section */
+ i = 0;
+ for (p = start; p < finish; p++) {
+ p->insn += i;
+ i += 4;
+ p->fixup += i;
+ i += 4;
+ }
+
+ sort(start, finish - start, sizeof(struct exception_table_entry),
+ cmp_ex, NULL);
+
+ /* Denormalize all entries */
+ i = 0;
+ for (p = start; p < finish; p++) {
+ p->insn -= i;
+ i += 4;
+ p->fixup -= i;
+ i += 4;
+ }
+}
+
+#ifdef CONFIG_MODULES
+/*
+ * If the exception table is sorted, any referring to the module init
+ * will be at the beginning or the end.
+ */
+void trim_init_extable(struct module *m)
+{
+ /*trim the beginning*/
+ while (m->num_exentries &&
+ within_module_init(ex_insn_addr(&m->extable[0]), m)) {
+ m->extable++;
+ m->num_exentries--;
+ }
+ /*trim the end*/
+ while (m->num_exentries &&
+ within_module_init(ex_insn_addr(&m->extable[m->num_exentries-1]), m))
+ m->num_exentries--;
+}
+#endif /* CONFIG_MODULES */
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 3ecfd1aaf214..76dcd9d8e0bc 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -582,7 +582,7 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code,
pte_t *pte = lookup_address(address, &level);
if (pte && pte_present(*pte) && !pte_exec(*pte))
- printk(nx_warning, current_uid());
+ printk(nx_warning, from_kuid(&init_user_ns, current_uid()));
}
printk(KERN_ALERT "BUG: unable to handle kernel ");
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 4f0cec7e4ffb..97141c26a13a 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -29,8 +29,14 @@ int direct_gbpages
#endif
;
-static void __init find_early_table_space(unsigned long end, int use_pse,
- int use_gbpages)
+struct map_range {
+ unsigned long start;
+ unsigned long end;
+ unsigned page_size_mask;
+};
+
+static void __init find_early_table_space(struct map_range *mr, unsigned long end,
+ int use_pse, int use_gbpages)
{
unsigned long puds, pmds, ptes, tables, start = 0, good_end = end;
phys_addr_t base;
@@ -55,6 +61,9 @@ static void __init find_early_table_space(unsigned long end, int use_pse,
#ifdef CONFIG_X86_32
extra += PMD_SIZE;
#endif
+ /* The first 2/4M doesn't use large pages. */
+ extra += mr->end - mr->start;
+
ptes = (extra + PAGE_SIZE - 1) >> PAGE_SHIFT;
} else
ptes = (end + PAGE_SIZE - 1) >> PAGE_SHIFT;
@@ -75,8 +84,9 @@ static void __init find_early_table_space(unsigned long end, int use_pse,
pgt_buf_end = pgt_buf_start;
pgt_buf_top = pgt_buf_start + (tables >> PAGE_SHIFT);
- printk(KERN_DEBUG "kernel direct mapping tables up to %lx @ %lx-%lx\n",
- end, pgt_buf_start << PAGE_SHIFT, pgt_buf_top << PAGE_SHIFT);
+ printk(KERN_DEBUG "kernel direct mapping tables up to %#lx @ [mem %#010lx-%#010lx]\n",
+ end - 1, pgt_buf_start << PAGE_SHIFT,
+ (pgt_buf_top << PAGE_SHIFT) - 1);
}
void __init native_pagetable_reserve(u64 start, u64 end)
@@ -84,12 +94,6 @@ void __init native_pagetable_reserve(u64 start, u64 end)
memblock_reserve(start, end - start);
}
-struct map_range {
- unsigned long start;
- unsigned long end;
- unsigned page_size_mask;
-};
-
#ifdef CONFIG_X86_32
#define NR_RANGE_MR 3
#else /* CONFIG_X86_64 */
@@ -129,7 +133,8 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
int nr_range, i;
int use_pse, use_gbpages;
- printk(KERN_INFO "init_memory_mapping: %016lx-%016lx\n", start, end);
+ printk(KERN_INFO "init_memory_mapping: [mem %#010lx-%#010lx]\n",
+ start, end - 1);
#if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_KMEMCHECK)
/*
@@ -248,8 +253,8 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
}
for (i = 0; i < nr_range; i++)
- printk(KERN_DEBUG " %010lx - %010lx page %s\n",
- mr[i].start, mr[i].end,
+ printk(KERN_DEBUG " [mem %#010lx-%#010lx] page %s\n",
+ mr[i].start, mr[i].end - 1,
(mr[i].page_size_mask & (1<<PG_LEVEL_1G))?"1G":(
(mr[i].page_size_mask & (1<<PG_LEVEL_2M))?"2M":"4k"));
@@ -261,7 +266,7 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
* nodes are discovered.
*/
if (!after_bootmem)
- find_early_table_space(end, use_pse, use_gbpages);
+ find_early_table_space(&mr[0], end, use_pse, use_gbpages);
for (i = 0; i < nr_range; i++)
ret = kernel_physical_mapping_init(mr[i].start, mr[i].end,
@@ -347,8 +352,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
* create a kernel page fault:
*/
#ifdef CONFIG_DEBUG_PAGEALLOC
- printk(KERN_INFO "debug: unmapping init memory %08lx..%08lx\n",
- begin, end);
+ printk(KERN_INFO "debug: unmapping init [mem %#010lx-%#010lx]\n",
+ begin, end - 1);
set_memory_np(begin, (end - begin) >> PAGE_SHIFT);
#else
/*
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index fc18be0f6f29..2b6b4a3c8beb 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -407,12 +407,12 @@ static unsigned long __meminit
phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end,
unsigned long page_size_mask, pgprot_t prot)
{
- unsigned long pages = 0;
+ unsigned long pages = 0, next;
unsigned long last_map_addr = end;
int i = pmd_index(address);
- for (; i < PTRS_PER_PMD; i++, address += PMD_SIZE) {
+ for (; i < PTRS_PER_PMD; i++, address = next) {
unsigned long pte_phys;
pmd_t *pmd = pmd_page + pmd_index(address);
pte_t *pte;
@@ -426,6 +426,8 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end,
break;
}
+ next = (address & PMD_MASK) + PMD_SIZE;
+
if (pmd_val(*pmd)) {
if (!pmd_large(*pmd)) {
spin_lock(&init_mm.page_table_lock);
@@ -449,7 +451,7 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end,
* attributes.
*/
if (page_size_mask & (1 << PG_LEVEL_2M)) {
- pages++;
+ last_map_addr = next;
continue;
}
new_prot = pte_pgprot(pte_clrhuge(*(pte_t *)pmd));
@@ -462,7 +464,7 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end,
pfn_pte(address >> PAGE_SHIFT,
__pgprot(pgprot_val(prot) | _PAGE_PSE)));
spin_unlock(&init_mm.page_table_lock);
- last_map_addr = (address & PMD_MASK) + PMD_SIZE;
+ last_map_addr = next;
continue;
}
@@ -482,11 +484,11 @@ static unsigned long __meminit
phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end,
unsigned long page_size_mask)
{
- unsigned long pages = 0;
+ unsigned long pages = 0, next;
unsigned long last_map_addr = end;
int i = pud_index(addr);
- for (; i < PTRS_PER_PUD; i++, addr = (addr & PUD_MASK) + PUD_SIZE) {
+ for (; i < PTRS_PER_PUD; i++, addr = next) {
unsigned long pmd_phys;
pud_t *pud = pud_page + pud_index(addr);
pmd_t *pmd;
@@ -495,8 +497,9 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end,
if (addr >= end)
break;
- if (!after_bootmem &&
- !e820_any_mapped(addr, addr+PUD_SIZE, 0)) {
+ next = (addr & PUD_MASK) + PUD_SIZE;
+
+ if (!after_bootmem && !e820_any_mapped(addr, next, 0)) {
set_pud(pud, __pud(0));
continue;
}
@@ -523,7 +526,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end,
* attributes.
*/
if (page_size_mask & (1 << PG_LEVEL_1G)) {
- pages++;
+ last_map_addr = next;
continue;
}
prot = pte_pgprot(pte_clrhuge(*(pte_t *)pud));
@@ -535,7 +538,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end,
set_pte((pte_t *)pud,
pfn_pte(addr >> PAGE_SHIFT, PAGE_KERNEL_LARGE));
spin_unlock(&init_mm.page_table_lock);
- last_map_addr = (addr & PUD_MASK) + PUD_SIZE;
+ last_map_addr = next;
continue;
}
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 19d3fa08b119..2d125be1bae9 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -141,8 +141,8 @@ static int __init numa_add_memblk_to(int nid, u64 start, u64 end,
/* whine about and ignore invalid blks */
if (start > end || nid < 0 || nid >= MAX_NUMNODES) {
- pr_warning("NUMA: Warning: invalid memblk node %d (%Lx-%Lx)\n",
- nid, start, end);
+ pr_warning("NUMA: Warning: invalid memblk node %d [mem %#010Lx-%#010Lx]\n",
+ nid, start, end - 1);
return 0;
}
@@ -210,8 +210,8 @@ static void __init setup_node_data(int nid, u64 start, u64 end)
start = roundup(start, ZONE_ALIGN);
- printk(KERN_INFO "Initmem setup node %d %016Lx-%016Lx\n",
- nid, start, end);
+ printk(KERN_INFO "Initmem setup node %d [mem %#010Lx-%#010Lx]\n",
+ nid, start, end - 1);
/*
* Allocate node data. Try remap allocator first, node-local
@@ -232,7 +232,7 @@ static void __init setup_node_data(int nid, u64 start, u64 end)
}
/* report and initialize */
- printk(KERN_INFO " NODE_DATA [%016Lx - %016Lx]%s\n",
+ printk(KERN_INFO " NODE_DATA [mem %#010Lx-%#010Lx]%s\n",
nd_pa, nd_pa + nd_size - 1, remapped ? " (remapped)" : "");
tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT);
if (!remapped && tnid != nid)
@@ -291,14 +291,14 @@ int __init numa_cleanup_meminfo(struct numa_meminfo *mi)
*/
if (bi->end > bj->start && bi->start < bj->end) {
if (bi->nid != bj->nid) {
- pr_err("NUMA: node %d (%Lx-%Lx) overlaps with node %d (%Lx-%Lx)\n",
- bi->nid, bi->start, bi->end,
- bj->nid, bj->start, bj->end);
+ pr_err("NUMA: node %d [mem %#010Lx-%#010Lx] overlaps with node %d [mem %#010Lx-%#010Lx]\n",
+ bi->nid, bi->start, bi->end - 1,
+ bj->nid, bj->start, bj->end - 1);
return -EINVAL;
}
- pr_warning("NUMA: Warning: node %d (%Lx-%Lx) overlaps with itself (%Lx-%Lx)\n",
- bi->nid, bi->start, bi->end,
- bj->start, bj->end);
+ pr_warning("NUMA: Warning: node %d [mem %#010Lx-%#010Lx] overlaps with itself [mem %#010Lx-%#010Lx]\n",
+ bi->nid, bi->start, bi->end - 1,
+ bj->start, bj->end - 1);
}
/*
@@ -320,9 +320,9 @@ int __init numa_cleanup_meminfo(struct numa_meminfo *mi)
}
if (k < mi->nr_blks)
continue;
- printk(KERN_INFO "NUMA: Node %d [%Lx,%Lx) + [%Lx,%Lx) -> [%Lx,%Lx)\n",
- bi->nid, bi->start, bi->end, bj->start, bj->end,
- start, end);
+ printk(KERN_INFO "NUMA: Node %d [mem %#010Lx-%#010Lx] + [mem %#010Lx-%#010Lx] -> [mem %#010Lx-%#010Lx]\n",
+ bi->nid, bi->start, bi->end - 1, bj->start,
+ bj->end - 1, start, end - 1);
bi->start = start;
bi->end = end;
numa_remove_memblk_from(j--, mi);
@@ -616,8 +616,8 @@ static int __init dummy_numa_init(void)
{
printk(KERN_INFO "%s\n",
numa_off ? "NUMA turned off" : "No NUMA configuration found");
- printk(KERN_INFO "Faking a node at %016Lx-%016Lx\n",
- 0LLU, PFN_PHYS(max_pfn));
+ printk(KERN_INFO "Faking a node at [mem %#018Lx-%#018Lx]\n",
+ 0LLU, PFN_PHYS(max_pfn) - 1);
node_set(0, numa_nodes_parsed);
numa_add_memblk(0, 0, PFN_PHYS(max_pfn));
diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c
index 53489ff6bf82..dbbbb47260cc 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -68,8 +68,8 @@ static int __init emu_setup_memblk(struct numa_meminfo *ei,
numa_remove_memblk_from(phys_blk, pi);
}
- printk(KERN_INFO "Faking node %d at %016Lx-%016Lx (%LuMB)\n", nid,
- eb->start, eb->end, (eb->end - eb->start) >> 20);
+ printk(KERN_INFO "Faking node %d at [mem %#018Lx-%#018Lx] (%LuMB)\n",
+ nid, eb->start, eb->end - 1, (eb->end - eb->start) >> 20);
return 0;
}
@@ -339,9 +339,11 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
} else {
unsigned long n;
- n = simple_strtoul(emu_cmdline, NULL, 0);
+ n = simple_strtoul(emu_cmdline, &emu_cmdline, 0);
ret = split_nodes_interleave(&ei, &pi, 0, max_addr, n);
}
+ if (*emu_cmdline == ':')
+ emu_cmdline++;
if (ret < 0)
goto no_emu;
@@ -418,7 +420,9 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
int physj = emu_nid_to_phys[j];
int dist;
- if (physi >= numa_dist_cnt || physj >= numa_dist_cnt)
+ if (get_option(&emu_cmdline, &dist) == 2)
+ ;
+ else if (physi >= numa_dist_cnt || physj >= numa_dist_cnt)
dist = physi == physj ?
LOCAL_DISTANCE : REMOTE_DISTANCE;
else
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index f6ff57b7efa5..3d68ef6d2266 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -158,31 +158,47 @@ static unsigned long pat_x_mtrr_type(u64 start, u64 end, unsigned long req_type)
return req_type;
}
+struct pagerange_state {
+ unsigned long cur_pfn;
+ int ram;
+ int not_ram;
+};
+
+static int
+pagerange_is_ram_callback(unsigned long initial_pfn, unsigned long total_nr_pages, void *arg)
+{
+ struct pagerange_state *state = arg;
+
+ state->not_ram |= initial_pfn > state->cur_pfn;
+ state->ram |= total_nr_pages > 0;
+ state->cur_pfn = initial_pfn + total_nr_pages;
+
+ return state->ram && state->not_ram;
+}
+
static int pat_pagerange_is_ram(resource_size_t start, resource_size_t end)
{
- int ram_page = 0, not_rampage = 0;
- unsigned long page_nr;
+ int ret = 0;
+ unsigned long start_pfn = start >> PAGE_SHIFT;
+ unsigned long end_pfn = (end + PAGE_SIZE - 1) >> PAGE_SHIFT;
+ struct pagerange_state state = {start_pfn, 0, 0};
- for (page_nr = (start >> PAGE_SHIFT); page_nr < (end >> PAGE_SHIFT);
- ++page_nr) {
- /*
- * For legacy reasons, physical address range in the legacy ISA
- * region is tracked as non-RAM. This will allow users of
- * /dev/mem to map portions of legacy ISA region, even when
- * some of those portions are listed(or not even listed) with
- * different e820 types(RAM/reserved/..)
- */
- if (page_nr >= (ISA_END_ADDRESS >> PAGE_SHIFT) &&
- page_is_ram(page_nr))
- ram_page = 1;
- else
- not_rampage = 1;
-
- if (ram_page == not_rampage)
- return -1;
+ /*
+ * For legacy reasons, physical address range in the legacy ISA
+ * region is tracked as non-RAM. This will allow users of
+ * /dev/mem to map portions of legacy ISA region, even when
+ * some of those portions are listed(or not even listed) with
+ * different e820 types(RAM/reserved/..)
+ */
+ if (start_pfn < ISA_END_ADDRESS >> PAGE_SHIFT)
+ start_pfn = ISA_END_ADDRESS >> PAGE_SHIFT;
+
+ if (start_pfn < end_pfn) {
+ ret = walk_system_ram_range(start_pfn, end_pfn - start_pfn,
+ &state, pagerange_is_ram_callback);
}
- return ram_page;
+ return (ret > 0) ? -1 : (state.ram ? 1 : 0);
}
/*
@@ -209,9 +225,8 @@ static int reserve_ram_pages_type(u64 start, u64 end, unsigned long req_type,
page = pfn_to_page(pfn);
type = get_page_memtype(page);
if (type != -1) {
- printk(KERN_INFO "reserve_ram_pages_type failed "
- "0x%Lx-0x%Lx, track 0x%lx, req 0x%lx\n",
- start, end, type, req_type);
+ printk(KERN_INFO "reserve_ram_pages_type failed [mem %#010Lx-%#010Lx], track 0x%lx, req 0x%lx\n",
+ start, end - 1, type, req_type);
if (new_type)
*new_type = type;
@@ -314,9 +329,9 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type,
err = rbt_memtype_check_insert(new, new_type);
if (err) {
- printk(KERN_INFO "reserve_memtype failed 0x%Lx-0x%Lx, "
- "track %s, req %s\n",
- start, end, cattr_name(new->type), cattr_name(req_type));
+ printk(KERN_INFO "reserve_memtype failed [mem %#010Lx-%#010Lx], track %s, req %s\n",
+ start, end - 1,
+ cattr_name(new->type), cattr_name(req_type));
kfree(new);
spin_unlock(&memtype_lock);
@@ -325,8 +340,8 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type,
spin_unlock(&memtype_lock);
- dprintk("reserve_memtype added 0x%Lx-0x%Lx, track %s, req %s, ret %s\n",
- start, end, cattr_name(new->type), cattr_name(req_type),
+ dprintk("reserve_memtype added [mem %#010Lx-%#010Lx], track %s, req %s, ret %s\n",
+ start, end - 1, cattr_name(new->type), cattr_name(req_type),
new_type ? cattr_name(*new_type) : "-");
return err;
@@ -360,14 +375,14 @@ int free_memtype(u64 start, u64 end)
spin_unlock(&memtype_lock);
if (!entry) {
- printk(KERN_INFO "%s:%d freeing invalid memtype %Lx-%Lx\n",
- current->comm, current->pid, start, end);
+ printk(KERN_INFO "%s:%d freeing invalid memtype [mem %#010Lx-%#010Lx]\n",
+ current->comm, current->pid, start, end - 1);
return -EINVAL;
}
kfree(entry);
- dprintk("free_memtype request 0x%Lx-0x%Lx\n", start, end);
+ dprintk("free_memtype request [mem %#010Lx-%#010Lx]\n", start, end - 1);
return 0;
}
@@ -491,9 +506,8 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
while (cursor < to) {
if (!devmem_is_allowed(pfn)) {
- printk(KERN_INFO
- "Program %s tried to access /dev/mem between %Lx->%Lx.\n",
- current->comm, from, to);
+ printk(KERN_INFO "Program %s tried to access /dev/mem between [mem %#010Lx-%#010Lx]\n",
+ current->comm, from, to - 1);
return 0;
}
cursor += PAGE_SIZE;
@@ -554,12 +568,11 @@ int kernel_map_sync_memtype(u64 base, unsigned long size, unsigned long flags)
size;
if (ioremap_change_attr((unsigned long)__va(base), id_sz, flags) < 0) {
- printk(KERN_INFO
- "%s:%d ioremap_change_attr failed %s "
- "for %Lx-%Lx\n",
+ printk(KERN_INFO "%s:%d ioremap_change_attr failed %s "
+ "for [mem %#010Lx-%#010Lx]\n",
current->comm, current->pid,
cattr_name(flags),
- base, (unsigned long long)(base + size));
+ base, (unsigned long long)(base + size-1));
return -EINVAL;
}
return 0;
@@ -591,12 +604,11 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
flags = lookup_memtype(paddr);
if (want_flags != flags) {
- printk(KERN_WARNING
- "%s:%d map pfn RAM range req %s for %Lx-%Lx, got %s\n",
+ printk(KERN_WARNING "%s:%d map pfn RAM range req %s for [mem %#010Lx-%#010Lx], got %s\n",
current->comm, current->pid,
cattr_name(want_flags),
(unsigned long long)paddr,
- (unsigned long long)(paddr + size),
+ (unsigned long long)(paddr + size - 1),
cattr_name(flags));
*vma_prot = __pgprot((pgprot_val(*vma_prot) &
(~_PAGE_CACHE_MASK)) |
@@ -614,11 +626,11 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
!is_new_memtype_allowed(paddr, size, want_flags, flags)) {
free_memtype(paddr, paddr + size);
printk(KERN_ERR "%s:%d map pfn expected mapping type %s"
- " for %Lx-%Lx, got %s\n",
+ " for [mem %#010Lx-%#010Lx], got %s\n",
current->comm, current->pid,
cattr_name(want_flags),
(unsigned long long)paddr,
- (unsigned long long)(paddr + size),
+ (unsigned long long)(paddr + size - 1),
cattr_name(flags));
return -EINVAL;
}
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index efb5b4b93711..732af3a96183 100644
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -176,8 +176,9 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
return;
}
- printk(KERN_INFO "SRAT: Node %u PXM %u %Lx-%Lx\n", node, pxm,
- start, end);
+ printk(KERN_INFO "SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]\n",
+ node, pxm,
+ (unsigned long long) start, (unsigned long long) end - 1);
}
void __init acpi_numa_arch_fixup(void) {}
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index d6c0418c3e47..5e57e113b72c 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -61,11 +61,13 @@ static DEFINE_PER_CPU_READ_MOSTLY(int, tlb_vector_offset);
*/
void leave_mm(int cpu)
{
- if (percpu_read(cpu_tlbstate.state) == TLBSTATE_OK)
+ struct mm_struct *active_mm = this_cpu_read(cpu_tlbstate.active_mm);
+ if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK)
BUG();
- cpumask_clear_cpu(cpu,
- mm_cpumask(percpu_read(cpu_tlbstate.active_mm)));
- load_cr3(swapper_pg_dir);
+ if (cpumask_test_cpu(cpu, mm_cpumask(active_mm))) {
+ cpumask_clear_cpu(cpu, mm_cpumask(active_mm));
+ load_cr3(swapper_pg_dir);
+ }
}
EXPORT_SYMBOL_GPL(leave_mm);
@@ -152,8 +154,8 @@ void smp_invalidate_interrupt(struct pt_regs *regs)
* BUG();
*/
- if (f->flush_mm == percpu_read(cpu_tlbstate.active_mm)) {
- if (percpu_read(cpu_tlbstate.state) == TLBSTATE_OK) {
+ if (f->flush_mm == this_cpu_read(cpu_tlbstate.active_mm)) {
+ if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK) {
if (f->flush_va == TLB_FLUSH_ALL)
local_flush_tlb();
else
@@ -322,7 +324,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long va)
static void do_flush_tlb_all(void *info)
{
__flush_tlb_all();
- if (percpu_read(cpu_tlbstate.state) == TLBSTATE_LAZY)
+ if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_LAZY)
leave_mm(smp_processor_id());
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.