summaryrefslogtreecommitdiff
path: root/arch/x86/mm
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/mm')
-rw-r--r--arch/x86/mm/amdtopology.c2
-rw-r--r--arch/x86/mm/init.c59
-rw-r--r--arch/x86/mm/init_32.c2
-rw-r--r--arch/x86/mm/init_64.c26
-rw-r--r--arch/x86/mm/ioremap.c3
-rw-r--r--arch/x86/mm/kasan_init_64.c5
-rw-r--r--arch/x86/mm/mmio-mod.c2
-rw-r--r--arch/x86/mm/numa.c2
-rw-r--r--arch/x86/mm/pageattr.c2
-rw-r--r--arch/x86/mm/pat.c3
-rw-r--r--arch/x86/mm/pgtable_32.c2
-rw-r--r--arch/x86/mm/srat.c2
12 files changed, 80 insertions, 30 deletions
diff --git a/arch/x86/mm/amdtopology.c b/arch/x86/mm/amdtopology.c
index d1c7de095808..91f501b2da3b 100644
--- a/arch/x86/mm/amdtopology.c
+++ b/arch/x86/mm/amdtopology.c
@@ -19,7 +19,7 @@
#include <asm/types.h>
#include <asm/mmzone.h>
#include <asm/proto.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/pci-direct.h>
#include <asm/numa.h>
#include <asm/mpspec.h>
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 22af912d66d2..2193799ca800 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -6,7 +6,7 @@
#include <linux/bootmem.h> /* for max_low_pfn */
#include <asm/cacheflush.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/init.h>
#include <asm/page.h>
#include <asm/page_types.h>
@@ -373,14 +373,14 @@ static int __meminit split_mem_range(struct map_range *mr, int nr_range,
return nr_range;
}
-struct range pfn_mapped[E820_X_MAX];
+struct range pfn_mapped[E820_MAX_ENTRIES];
int nr_pfn_mapped;
static void add_pfn_range_mapped(unsigned long start_pfn, unsigned long end_pfn)
{
- nr_pfn_mapped = add_range_with_merge(pfn_mapped, E820_X_MAX,
+ nr_pfn_mapped = add_range_with_merge(pfn_mapped, E820_MAX_ENTRIES,
nr_pfn_mapped, start_pfn, end_pfn);
- nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_X_MAX);
+ nr_pfn_mapped = clean_sort_range(pfn_mapped, E820_MAX_ENTRIES);
max_pfn_mapped = max(max_pfn_mapped, end_pfn);
@@ -430,7 +430,7 @@ unsigned long __ref init_memory_mapping(unsigned long start,
/*
* We need to iterate through the E820 memory map and create direct mappings
- * for only E820_RAM and E820_KERN_RESERVED regions. We cannot simply
+ * for only E820_TYPE_RAM and E820_KERN_RESERVED regions. We cannot simply
* create direct mappings for all pfns from [0 to max_low_pfn) and
* [4GB to max_pfn) because of possible memory holes in high addresses
* that cannot be marked as UC by fixed/variable range MTRRs.
@@ -701,7 +701,7 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
void __ref free_initmem(void)
{
- e820_reallocate_tables();
+ e820__reallocate_tables();
free_init_pages("unused kernel",
(unsigned long)(&__init_begin),
@@ -724,6 +724,53 @@ void __init free_initrd_mem(unsigned long start, unsigned long end)
}
#endif
+/*
+ * Calculate the precise size of the DMA zone (first 16 MB of RAM),
+ * and pass it to the MM layer - to help it set zone watermarks more
+ * accurately.
+ *
+ * Done on 64-bit systems only for the time being, although 32-bit systems
+ * might benefit from this as well.
+ */
+void __init memblock_find_dma_reserve(void)
+{
+#ifdef CONFIG_X86_64
+ u64 nr_pages = 0, nr_free_pages = 0;
+ unsigned long start_pfn, end_pfn;
+ phys_addr_t start_addr, end_addr;
+ int i;
+ u64 u;
+
+ /*
+ * Iterate over all memory ranges (free and reserved ones alike),
+ * to calculate the total number of pages in the first 16 MB of RAM:
+ */
+ nr_pages = 0;
+ for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL) {
+ start_pfn = min(start_pfn, MAX_DMA_PFN);
+ end_pfn = min(end_pfn, MAX_DMA_PFN);
+
+ nr_pages += end_pfn - start_pfn;
+ }
+
+ /*
+ * Iterate over free memory ranges to calculate the number of free
+ * pages in the DMA zone, while not counting potential partial
+ * pages at the beginning or the end of the range:
+ */
+ nr_free_pages = 0;
+ for_each_free_mem_range(u, NUMA_NO_NODE, MEMBLOCK_NONE, &start_addr, &end_addr, NULL) {
+ start_pfn = min_t(unsigned long, PFN_UP(start_addr), MAX_DMA_PFN);
+ end_pfn = min_t(unsigned long, PFN_DOWN(end_addr), MAX_DMA_PFN);
+
+ if (start_pfn < end_pfn)
+ nr_free_pages += end_pfn - start_pfn;
+ }
+
+ set_dma_reserve(nr_pages - nr_free_pages);
+#endif
+}
+
void __init zone_sizes_init(void)
{
unsigned long max_zone_pfns[MAX_NR_ZONES];
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 2b4b53e6793f..1fa97c941abe 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -38,7 +38,7 @@
#include <asm/pgtable.h>
#include <asm/dma.h>
#include <asm/fixmap.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/apic.h>
#include <asm/bugs.h>
#include <asm/tlb.h>
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 15173d37f399..f6da869810a8 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -41,7 +41,7 @@
#include <asm/pgalloc.h>
#include <asm/dma.h>
#include <asm/fixmap.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/apic.h>
#include <asm/tlb.h>
#include <asm/mmu_context.h>
@@ -337,10 +337,10 @@ phys_pte_init(pte_t *pte_page, unsigned long paddr, unsigned long paddr_end,
paddr_next = (paddr & PAGE_MASK) + PAGE_SIZE;
if (paddr >= paddr_end) {
if (!after_bootmem &&
- !e820_any_mapped(paddr & PAGE_MASK, paddr_next,
- E820_RAM) &&
- !e820_any_mapped(paddr & PAGE_MASK, paddr_next,
- E820_RESERVED_KERN))
+ !e820__mapped_any(paddr & PAGE_MASK, paddr_next,
+ E820_TYPE_RAM) &&
+ !e820__mapped_any(paddr & PAGE_MASK, paddr_next,
+ E820_TYPE_RESERVED_KERN))
set_pte(pte, __pte(0));
continue;
}
@@ -392,10 +392,10 @@ phys_pmd_init(pmd_t *pmd_page, unsigned long paddr, unsigned long paddr_end,
paddr_next = (paddr & PMD_MASK) + PMD_SIZE;
if (paddr >= paddr_end) {
if (!after_bootmem &&
- !e820_any_mapped(paddr & PMD_MASK, paddr_next,
- E820_RAM) &&
- !e820_any_mapped(paddr & PMD_MASK, paddr_next,
- E820_RESERVED_KERN))
+ !e820__mapped_any(paddr & PMD_MASK, paddr_next,
+ E820_TYPE_RAM) &&
+ !e820__mapped_any(paddr & PMD_MASK, paddr_next,
+ E820_TYPE_RESERVED_KERN))
set_pmd(pmd, __pmd(0));
continue;
}
@@ -478,10 +478,10 @@ phys_pud_init(pud_t *pud_page, unsigned long paddr, unsigned long paddr_end,
if (paddr >= paddr_end) {
if (!after_bootmem &&
- !e820_any_mapped(paddr & PUD_MASK, paddr_next,
- E820_RAM) &&
- !e820_any_mapped(paddr & PUD_MASK, paddr_next,
- E820_RESERVED_KERN))
+ !e820__mapped_any(paddr & PUD_MASK, paddr_next,
+ E820_TYPE_RAM) &&
+ !e820__mapped_any(paddr & PUD_MASK, paddr_next,
+ E820_TYPE_RESERVED_KERN))
set_pud(pud, __pud(0));
continue;
}
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 7aaa2635862d..c43b6b33463a 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -9,12 +9,13 @@
#include <linux/bootmem.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/mmiotrace.h>
#include <asm/cacheflush.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/fixmap.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c
index 8d63d7a104c3..66d20174e35f 100644
--- a/arch/x86/mm/kasan_init_64.c
+++ b/arch/x86/mm/kasan_init_64.c
@@ -7,11 +7,12 @@
#include <linux/sched/task.h>
#include <linux/vmalloc.h>
+#include <asm/e820/types.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
extern pgd_t early_level4_pgt[PTRS_PER_PGD];
-extern struct range pfn_mapped[E820_X_MAX];
+extern struct range pfn_mapped[E820_MAX_ENTRIES];
static int __init map_range(struct range *range)
{
@@ -103,7 +104,7 @@ void __init kasan_init(void)
kasan_populate_zero_shadow((void *)KASAN_SHADOW_START,
kasan_mem_to_shadow((void *)PAGE_OFFSET));
- for (i = 0; i < E820_X_MAX; i++) {
+ for (i = 0; i < E820_MAX_ENTRIES; i++) {
if (pfn_mapped[i].end == 0)
break;
diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
index bef36622e408..4d434ddb75db 100644
--- a/arch/x86/mm/mmio-mod.c
+++ b/arch/x86/mm/mmio-mod.c
@@ -32,7 +32,7 @@
#include <linux/kallsyms.h>
#include <asm/pgtable.h>
#include <linux/mmiotrace.h>
-#include <asm/e820.h> /* for ISA_START_ADDRESS */
+#include <asm/e820/api.h> /* for ISA_START_ADDRESS */
#include <linux/atomic.h>
#include <linux/percpu.h>
#include <linux/cpu.h>
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 12dcad7297a5..f9d99535f233 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -12,7 +12,7 @@
#include <linux/sched.h>
#include <linux/topology.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/proto.h>
#include <asm/dma.h>
#include <asm/amd_nb.h>
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 28d42130243c..a57e8e02f457 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -15,7 +15,7 @@
#include <linux/pci.h>
#include <linux/vmalloc.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/processor.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index efc32bc6862b..9b78685b66e6 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -10,6 +10,7 @@
#include <linux/seq_file.h>
#include <linux/bootmem.h>
#include <linux/debugfs.h>
+#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/pfn_t.h>
#include <linux/slab.h>
@@ -23,7 +24,7 @@
#include <asm/x86_init.h>
#include <asm/pgtable.h>
#include <asm/fcntl.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/mtrr.h>
#include <asm/page.h>
#include <asm/msr.h>
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 9adce776852b..de53c52551a5 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -12,7 +12,7 @@
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/fixmap.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/tlb.h>
#include <asm/tlbflush.h>
#include <asm/io.h>
diff --git a/arch/x86/mm/srat.c b/arch/x86/mm/srat.c
index 35fe69529bc1..3ea20d61b523 100644
--- a/arch/x86/mm/srat.c
+++ b/arch/x86/mm/srat.c
@@ -18,7 +18,7 @@
#include <linux/mm.h>
#include <asm/proto.h>
#include <asm/numa.h>
-#include <asm/e820.h>
+#include <asm/e820/api.h>
#include <asm/apic.h>
#include <asm/uv/uv.h>
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-02 11:00:38 +0300