#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/msr.h>
+#include <asm/kvm_para.h>
#include "mtrr.h"
u32 num_var_ranges = 0;
atomic_set(&data.gate,0);
/* Start the ball rolling on other CPUs */
- if (smp_call_function(ipi_handler, &data, 1, 0) != 0)
+ if (smp_call_function(ipi_handler, &data, 0) != 0)
panic("mtrr: timed out waiting for other CPUs\n");
local_irq_save(flags);
#define Tom2Enabled (1U << 21)
#define Tom2ForceMemTypeWB (1U << 22)
-static __init int amd_special_default_mtrr(void)
+int __init amd_special_default_mtrr(void)
{
u32 l, h;
/**
* mtrr_trim_uncached_memory - trim RAM not covered by MTRRs
+ * @end_pfn: ending page frame number
*
* Some buggy BIOSes don't setup the MTRRs properly for systems with certain
* memory configurations. This routine checks that the highest MTRR matches
*/
int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
{
- unsigned long i, base, size, highest_addr = 0, def, dummy;
+ unsigned long i, base, size, highest_pfn = 0, def, dummy;
mtrr_type type;
u64 trim_start, trim_size;
mtrr_if->get(i, &base, &size, &type);
if (type != MTRR_TYPE_WRBACK)
continue;
- base <<= PAGE_SHIFT;
- size <<= PAGE_SHIFT;
- if (highest_addr < base + size)
- highest_addr = base + size;
+ if (highest_pfn < base + size)
+ highest_pfn = base + size;
}
/* kvm/qemu doesn't have mtrr set right, don't trim them all */
- if (!highest_addr) {
- printk(KERN_WARNING "WARNING: strange, CPU MTRRs all blank?\n");
- WARN_ON(1);
+ if (!highest_pfn) {
+ if (!kvm_para_available()) {
+ printk(KERN_WARNING
+ "WARNING: strange, CPU MTRRs all blank?\n");
+ WARN_ON(1);
+ }
return 0;
}
- if ((highest_addr >> PAGE_SHIFT) < end_pfn) {
+ if (highest_pfn < end_pfn) {
printk(KERN_WARNING "WARNING: BIOS bug: CPU MTRRs don't cover"
- " all of memory, losing %LdMB of RAM.\n",
- (((u64)end_pfn << PAGE_SHIFT) - highest_addr) >> 20);
+ " all of memory, losing %luMB of RAM.\n",
+ (end_pfn - highest_pfn) >> (20 - PAGE_SHIFT));
WARN_ON(1);
printk(KERN_INFO "update e820 for mtrr\n");
- trim_start = highest_addr;
+ trim_start = highest_pfn;
+ trim_start <<= PAGE_SHIFT;
trim_size = end_pfn;
trim_size <<= PAGE_SHIFT;
trim_size -= trim_start;
- add_memory_region(trim_start, trim_size, E820_RESERVED);
+ update_memory_range(trim_start, trim_size, E820_RAM,
+ E820_RESERVED);
update_e820();
return 1;
}
*/
void mtrr_save_state(void)
{
- smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
+ smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1);
}
static int __init mtrr_init_finialize(void)