mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-21 11:13:30 +00:00
Code Issues Releases Activity

Use supersection instead of standard sections to map the whole memory

Browse Source 
when available.

Approved by:	re (blanket)
This commit is contained in:
Olivier Houchard 2007-07-27 14:46:15 +00:00
parent e905513c06
commit fcd373ffb8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=171622
1 changed files with 29 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
sys/arm/arm/vm_machdep.c
View File

@ -118,10 +118,12 @@ cpu_fork(register struct thread *td1, register struct proc *p2,
pcb1 = td1->td_pcb;
pcb2 = (struct pcb *)(td2->td_kstack + td2->td_kstack_pages * PAGE_SIZE) - 1;
#ifdef __XSCALE__
#ifndef CPU_XSCALE_CORE3
pmap_use_minicache(td2->td_kstack, td2->td_kstack_pages * PAGE_SIZE);
if (td2->td_altkstack)
pmap_use_minicache(td2->td_altkstack, td2->td_altkstack_pages *
PAGE_SIZE);
#endif
#endif
td2->td_pcb = pcb2;
bcopy(td1->td_pcb, pcb2, sizeof(*pcb2));
@ -338,7 +340,9 @@ cpu_thread_setup(struct thread *td)
td->td_frame = (struct trapframe *)
((u_int)td->td_kstack + USPACE_SVC_STACK_TOP - sizeof(struct pcb)) - 1;
#ifdef __XSCALE__
#ifndef CPU_XSCALE_CORE3
pmap_use_minicache(td->td_kstack, td->td_kstack_pages * PAGE_SIZE);
#endif
#endif
}
@ -462,6 +466,14 @@ MALLOC_DEFINE(M_VMSMALLALLOC, "vm_small_alloc", "VM Small alloc data");
vm_offset_t alloc_firstaddr;
#ifdef ARM_HAVE_SUPERSECTIONS
#define S_FRAME L1_SUP_FRAME
#define S_SIZE L1_SUP_SIZE
#else
#define S_FRAME L1_S_FRAME
#define S_SIZE L1_S_SIZE
#endif
vm_offset_t
arm_ptovirt(vm_paddr_t pa)
{
@ -472,11 +484,11 @@ arm_ptovirt(vm_paddr_t pa)
for (i = 0; dump_avail[i + 1]; i += 2) {
if (pa >= dump_avail[i] && pa < dump_avail[i + 1])
break;
addr += (dump_avail[i + 1] & L1_S_FRAME) + L1_S_SIZE -
(dump_avail[i] & L1_S_FRAME);
addr += (dump_avail[i + 1] & S_FRAME) + S_SIZE -
(dump_avail[i] & S_FRAME);
}
KASSERT(dump_avail[i + 1] != 0, ("Trying to access invalid physical address"));
return (addr + (pa - (dump_avail[i] & L1_S_FRAME)));
return (addr + (pa - (dump_avail[i] & S_FRAME)));
}
void
@ -492,20 +504,26 @@ arm_init_smallalloc(void)
*/
for (i = 0; dump_avail[i + 1]; i+= 2) {
to_map += (dump_avail[i + 1] & L1_S_FRAME) + L1_S_SIZE -
(dump_avail[i] & L1_S_FRAME);
to_map += (dump_avail[i + 1] & S_FRAME) + S_SIZE -
(dump_avail[i] & S_FRAME);
}
alloc_firstaddr = mapaddr = KERNBASE - to_map;
for (i = 0; dump_avail[i + 1]; i+= 2) {
vm_offset_t size = (dump_avail[i + 1] & L1_S_FRAME) +
L1_S_SIZE - (dump_avail[i] & L1_S_FRAME);
vm_offset_t size = (dump_avail[i + 1] & S_FRAME) +
S_SIZE - (dump_avail[i] & S_FRAME);
vm_offset_t did = 0;
while (size > 0 ) {
while (size > 0) {
#ifdef ARM_HAVE_SUPERSECTIONS
pmap_kenter_supersection(mapaddr,
(dump_avail[i] & L1_SUP_FRAME) + did,
SECTION_CACHE);
#else
pmap_kenter_section(mapaddr,
(dump_avail[i] & L1_S_FRAME) + did, SECTION_CACHE);
mapaddr += L1_S_SIZE;
did += L1_S_SIZE;
size -= L1_S_SIZE;
#endif
mapaddr += S_SIZE;
did += S_SIZE;
size -= S_SIZE;
}
}
}