mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-12 09:58:36 +00:00
Code Issues Releases Activity

Implement is_physical_memory. Accessing memory which doesn't exist causes

Browse Source 
traps that are difficult to recover from, so we check against the memory
map returned by the prom.
This commit is contained in:
Jake Burkholder 2003-03-15 23:59:00 +00:00
parent 8b247b5adc
commit d647b74e54
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112306
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
sys/sparc64/sparc64/vm_machdep.c
View File

@ -75,9 +75,13 @@
#include <machine/frame.h>
#include <machine/md_var.h>
#include <machine/ofw_machdep.h>
#include <machine/ofw_mem.h>
#include <machine/tlb.h>
#include <machine/tstate.h>
extern struct ofw_mem_region sparc64_memreg[];
extern int sparc64_nmemreg;
PMAP_STATS_VAR(uma_nsmall_alloc);
PMAP_STATS_VAR(uma_nsmall_alloc_oc);
PMAP_STATS_VAR(uma_nsmall_free);
@ -295,9 +299,12 @@ cpu_wait(struct proc *p)
int
is_physical_memory(vm_offset_t addr)
{
struct ofw_mem_region *mr;
/* There is no device memory in the midst of the normal RAM. */
return (1);
for (mr = sparc64_memreg; mr < sparc64_memreg + sparc64_nmemreg; mr++)
if (addr >= mr->mr_start && addr < mr->mr_start + mr->mr_size)
return (1);
return (0);
}
void
@ -367,4 +374,3 @@ uma_small_free(void *mem, int size, u_int8_t flags)
vm_page_free(m);
vm_page_unlock_queues();
}