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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Initialise 1:1 mapping of physical memory map early during x86/64 boot.
ChangeSet 1.1428, 2005/05/17 11:39:50+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx
Initialise 1:1 mapping of physical memory map early during x86/64 boot.
This mapping should include all ACPI tables, so simplify the mapping
check in the ACPI code.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
arch/x86/acpi/boot.c | 10 +++-------
arch/x86/e820.c | 7 ++++---
arch/x86/setup.c | 31 +++++++++++++++++++++++--------
arch/x86/x86_64/mm.c | 8 +-------
common/grant_table.c | 1 -
include/asm-x86/e820.h | 2 +-
6 files changed, 32 insertions(+), 27 deletions(-)
diff -Nru a/xen/arch/x86/acpi/boot.c b/xen/arch/x86/acpi/boot.c
--- a/xen/arch/x86/acpi/boot.c 2005-05-17 07:03:55 -04:00
+++ b/xen/arch/x86/acpi/boot.c 2005-05-17 07:03:55 -04:00
@@ -40,7 +40,6 @@
#include <mach_mpparse.h>
int sbf_port;
-#define end_pfn_map max_page
#define CONFIG_ACPI_PCI
#define BAD_MADT_ENTRY(entry, end) ( \
@@ -96,12 +95,9 @@
char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
{
if (!phys_addr || !size)
- return NULL;
-
- if (phys_addr < (end_pfn_map << PAGE_SHIFT))
- return __va(phys_addr);
-
- return NULL;
+ return NULL;
+ /* XEN: We map all e820 areas which should include every ACPI table. */
+ return __va(phys_addr);
}
#else
diff -Nru a/xen/arch/x86/e820.c b/xen/arch/x86/e820.c
--- a/xen/arch/x86/e820.c 2005-05-17 07:03:55 -04:00
+++ b/xen/arch/x86/e820.c 2005-05-17 07:03:55 -04:00
@@ -372,16 +372,17 @@
}
static void __init machine_specific_memory_setup(
- struct e820entry *raw, int raw_nr)
+ struct e820entry *raw, int *raw_nr)
{
- char nr = (char)raw_nr;
+ char nr = (char)*raw_nr;
sanitize_e820_map(raw, &nr);
+ *raw_nr = nr;
(void)copy_e820_map(raw, nr);
clip_4gb();
clip_mem();
}
-unsigned long __init init_e820(struct e820entry *raw, int raw_nr)
+unsigned long __init init_e820(struct e820entry *raw, int *raw_nr)
{
machine_specific_memory_setup(raw, raw_nr);
printk(KERN_INFO "Physical RAM map:\n");
diff -Nru a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
--- a/xen/arch/x86/setup.c 2005-05-17 07:03:55 -04:00
+++ b/xen/arch/x86/setup.c 2005-05-17 07:03:55 -04:00
@@ -25,7 +25,7 @@
* pfn_info table and allocation bitmap.
*/
static unsigned int opt_xenheap_megabytes = XENHEAP_DEFAULT_MB;
-#if defined(__x86_64__)
+#if defined(CONFIG_X86_64)
integer_param("xenheap_megabytes", opt_xenheap_megabytes);
#endif
@@ -70,7 +70,7 @@
struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1 };
-#if defined(__x86_64__)
+#if defined(CONFIG_X86_64)
unsigned long mmu_cr4_features = X86_CR4_PSE | X86_CR4_PGE | X86_CR4_PAE;
#else
unsigned long mmu_cr4_features = X86_CR4_PSE | X86_CR4_PGE;
@@ -312,10 +312,10 @@
/* Set up and load the per-CPU TSS and LDT. */
t->bitmap = IOBMP_INVALID_OFFSET;
-#if defined(__i386__)
+#if defined(CONFIG_X86_32)
t->ss0 = __HYPERVISOR_DS;
t->esp0 = get_stack_bottom();
-#elif defined(__x86_64__)
+#elif defined(CONFIG_X86_64)
t->rsp0 = get_stack_bottom();
#endif
set_tss_desc(nr,t);
@@ -452,7 +452,7 @@
watchdog_enable();
-#ifdef __x86_64__ /* x86_32 uses low mappings when building DOM0. */
+#ifdef CONFIG_X86_64 /* x86_32 uses low mappings when building DOM0. */
zap_low_mappings();
#endif
}
@@ -519,7 +519,7 @@
for ( ; ; ) ;
}
- max_page = init_e820(e820_raw, e820_raw_nr);
+ max_page = init_e820(e820_raw, &e820_raw_nr);
/* Find the first high-memory RAM hole. */
for ( i = 0; i < e820.nr_map; i++ )
@@ -537,11 +537,11 @@
printk("Not enough memory to stash the DOM0 kernel image.\n");
for ( ; ; ) ;
}
-#if defined(__i386__)
+#if defined(CONFIG_X86_32)
memmove((void *)initial_images_start, /* use low mapping */
(void *)mod[0].mod_start, /* use low mapping */
mod[mbi->mods_count-1].mod_end - mod[0].mod_start);
-#elif defined(__x86_64__)
+#elif defined(CONFIG_X86_64)
memmove(__va(initial_images_start),
__va(mod[0].mod_start),
mod[mbi->mods_count-1].mod_end - mod[0].mod_start);
@@ -561,6 +561,21 @@
initial_images_end : e820.map[i].addr,
e820.map[i].addr + e820.map[i].size);
}
+
+#if defined (CONFIG_X86_64)
+ /* On x86/64 we can 1:1 map every registered memory area. */
+ /* We use the raw_e820 map because we sometimes truncate the cooked map. */
+ for ( i = 0; i < e820_raw_nr; i++ )
+ {
+ unsigned long min, sz;
+ min = (unsigned long)e820_raw[i].addr &
+ ~(((unsigned long)L1_PAGETABLE_ENTRIES << PAGE_SHIFT) - 1);
+ sz = ((unsigned long)e820_raw[i].size +
+ ((unsigned long)L1_PAGETABLE_ENTRIES << PAGE_SHIFT) - 1) &
+ ~(((unsigned long)L1_PAGETABLE_ENTRIES << PAGE_SHIFT) - 1);
+ map_pages(idle_pg_table, PAGE_OFFSET + min, min, sz, PAGE_HYPERVISOR);
+ }
+#endif
printk("System RAM: %luMB (%lukB)\n",
nr_pages >> (20 - PAGE_SHIFT),
diff -Nru a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c
--- a/xen/arch/x86/x86_64/mm.c 2005-05-17 07:03:55 -04:00
+++ b/xen/arch/x86/x86_64/mm.c 2005-05-17 07:03:55 -04:00
@@ -128,17 +128,11 @@
map_pages(idle_pg_table, fix_to_virt(idx), p, PAGE_SIZE, flags);
}
-
void __init paging_init(void)
{
- unsigned long i, p, max;
+ unsigned long i, p;
l3_pgentry_t *l3rw, *l3ro;
struct pfn_info *pg;
-
- /* Map all of physical memory. */
- max = ((max_page + L1_PAGETABLE_ENTRIES - 1) &
- ~(L1_PAGETABLE_ENTRIES - 1)) << PAGE_SHIFT;
- map_pages(idle_pg_table, PAGE_OFFSET, 0, max, PAGE_HYPERVISOR);
/*
* Allocate and map the machine-to-phys table.
diff -Nru a/xen/common/grant_table.c b/xen/common/grant_table.c
--- a/xen/common/grant_table.c 2005-05-17 07:03:55 -04:00
+++ b/xen/common/grant_table.c 2005-05-17 07:03:55 -04:00
@@ -1227,7 +1227,6 @@
void)
{
/* Nothing. */
- DPRINTK("Grant table init\n");
}
/*
diff -Nru a/xen/include/asm-x86/e820.h b/xen/include/asm-x86/e820.h
--- a/xen/include/asm-x86/e820.h 2005-05-17 07:03:55 -04:00
+++ b/xen/include/asm-x86/e820.h 2005-05-17 07:03:55 -04:00
@@ -24,7 +24,7 @@
struct e820entry map[E820MAX];
};
-extern unsigned long init_e820(struct e820entry *, int);
+extern unsigned long init_e820(struct e820entry *, int *);
extern struct e820map e820;
#ifndef NDEBUG
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