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Simplify the mapping of the system message buffer. Use the direct map just

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like ia64 does.
This commit is contained in:
Alan Cox 2010-01-23 20:28:37 +00:00
parent c1f5e7308a
commit 040a1eeab2
2 changed files with 4 additions and 12 deletions
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8
sys/amd64/amd64/machdep.c
View File

@ -157,6 +157,8 @@ SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL);
extern vm_offset_t ksym_start, ksym_end;
#endif
struct msgbuf *msgbufp;
/* Intel ICH registers */
#define ICH_PMBASE 0x400
#define ICH_SMI_EN ICH_PMBASE + 0x30
@ -1275,7 +1277,7 @@ add_smap_entry(struct bios_smap *smap, vm_paddr_t *physmap, int *physmap_idxp)
static void
getmemsize(caddr_t kmdp, u_int64_t first)
{
int i, off, physmap_idx, pa_indx, da_indx;
int i, physmap_idx, pa_indx, da_indx;
vm_paddr_t pa, physmap[PHYSMAP_SIZE];
u_long physmem_tunable;
pt_entry_t *pte;
@ -1508,9 +1510,7 @@ getmemsize(caddr_t kmdp, u_int64_t first)
phys_avail[pa_indx] -= round_page(MSGBUF_SIZE);
/* Map the message buffer. */
for (off = 0; off < round_page(MSGBUF_SIZE); off += PAGE_SIZE)
pmap_kenter((vm_offset_t)msgbufp + off, phys_avail[pa_indx] +
off);
msgbufp = (struct msgbuf *)PHYS_TO_DMAP(phys_avail[pa_indx]);
}
u_int64_t

8
sys/amd64/amd64/pmap.c
View File

@ -105,7 +105,6 @@ __FBSDID("$FreeBSD$");
* and to when physical maps must be made correct.
*/
#include "opt_msgbuf.h"
#include "opt_pmap.h"
#include "opt_vm.h"
@ -116,7 +115,6 @@ __FBSDID("$FreeBSD$");
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/msgbuf.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sx.h>
@ -206,7 +204,6 @@ static int shpgperproc = PMAP_SHPGPERPROC;
*/
pt_entry_t *CMAP1 = 0;
caddr_t CADDR1 = 0;
struct msgbuf *msgbufp = 0;
/*
* Crashdump maps.
@ -570,11 +567,6 @@ pmap_bootstrap(vm_paddr_t *firstaddr)
*/
SYSMAP(caddr_t, unused, crashdumpmap, MAXDUMPPGS)
/*
* msgbufp is used to map the system message buffer.
*/
SYSMAP(struct msgbuf *, unused, msgbufp, atop(round_page(MSGBUF_SIZE)))
virtual_avail = va;
*CMAP1 = 0;