Module Name: src
Committed By: cherry
Date: Tue Sep 20 18:57:54 UTC 2011
Modified Files:
src/sys/arch/amd64/include [cherry-xenmp]: pmap.h
src/sys/arch/i386/i386 [cherry-xenmp]: gdt.c machdep.c
src/sys/arch/i386/include [cherry-xenmp]: pmap.h
src/sys/arch/x86/include [cherry-xenmp]: pmap.h
src/sys/arch/x86/x86 [cherry-xenmp]: pmap.c pmap_tlb.c
src/sys/arch/xen/include [cherry-xenmp]: xenpmap.h
src/sys/arch/xen/x86 [cherry-xenmp]: cpu.c x86_xpmap.c xen_bus_dma.c
xen_pmap.c xenfunc.c
src/sys/arch/xen/xen [cherry-xenmp]: if_xennet_xenbus.c
xennetback_xenbus.c
Log Message:
Remove the "xpq lock", since we have per-cpu mmu queues now. This may need
further testing. Also add some preliminary locking around queue-ops in the
network backend driver
To generate a diff of this commit:
cvs rdiff -u -r1.24.2.2 -r1.24.2.3 src/sys/arch/amd64/include/pmap.h
cvs rdiff -u -r1.50.10.2 -r1.50.10.3 src/sys/arch/i386/i386/gdt.c
cvs rdiff -u -r1.702.2.6 -r1.702.2.7 src/sys/arch/i386/i386/machdep.c
cvs rdiff -u -r1.109.2.2 -r1.109.2.3 src/sys/arch/i386/include/pmap.h
cvs rdiff -u -r1.38.2.2 -r1.38.2.3 src/sys/arch/x86/include/pmap.h
cvs rdiff -u -r1.121.2.7 -r1.121.2.8 src/sys/arch/x86/x86/pmap.c
cvs rdiff -u -r1.3.2.4 -r1.3.2.5 src/sys/arch/x86/x86/pmap_tlb.c
cvs rdiff -u -r1.27.2.4 -r1.27.2.5 src/sys/arch/xen/include/xenpmap.h
cvs rdiff -u -r1.56.2.11 -r1.56.2.12 src/sys/arch/xen/x86/cpu.c
cvs rdiff -u -r1.26.2.10 -r1.26.2.11 src/sys/arch/xen/x86/x86_xpmap.c
cvs rdiff -u -r1.22.6.1 -r1.22.6.2 src/sys/arch/xen/x86/xen_bus_dma.c
cvs rdiff -u -r1.2.2.4 -r1.2.2.5 src/sys/arch/xen/x86/xen_pmap.c
cvs rdiff -u -r1.11.6.2 -r1.11.6.3 src/sys/arch/xen/x86/xenfunc.c
cvs rdiff -u -r1.51.2.1 -r1.51.2.2 src/sys/arch/xen/xen/if_xennet_xenbus.c
cvs rdiff -u -r1.46.2.1 -r1.46.2.2 src/sys/arch/xen/xen/xennetback_xenbus.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/amd64/include/pmap.h
diff -u src/sys/arch/amd64/include/pmap.h:1.24.2.2 src/sys/arch/amd64/include/pmap.h:1.24.2.3
--- src/sys/arch/amd64/include/pmap.h:1.24.2.2 Sat Aug 20 19:22:46 2011
+++ src/sys/arch/amd64/include/pmap.h Tue Sep 20 18:57:50 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.h,v 1.24.2.2 2011/08/20 19:22:46 cherry Exp $ */
+/* $NetBSD: pmap.h,v 1.24.2.3 2011/09/20 18:57:50 cherry Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -277,9 +277,7 @@
pmap_pte_set(pt_entry_t *pte, pt_entry_t npte)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(pte), npte);
- xpq_queue_unlock();
splx(s);
}
@@ -288,14 +286,12 @@
{
int s = splvm();
- xpq_queue_lock();
pt_entry_t opte = *ptep;
if (opte == o) {
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(ptep)), n);
xpq_flush_queue();
}
- xpq_queue_unlock();
splx(s);
return opte;
}
@@ -304,11 +300,9 @@
pmap_pte_testset(volatile pt_entry_t *pte, pt_entry_t npte)
{
int s = splvm();
- xpq_queue_lock();
pt_entry_t opte = *pte;
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(pte)), npte);
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
return opte;
}
@@ -317,10 +311,8 @@
pmap_pte_setbits(volatile pt_entry_t *pte, pt_entry_t bits)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(pte)), (*pte) | bits);
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
}
@@ -328,11 +320,9 @@
pmap_pte_clearbits(volatile pt_entry_t *pte, pt_entry_t bits)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(pte)),
(*pte) & ~bits);
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
}
@@ -340,9 +330,7 @@
pmap_pte_flush(void)
{
int s = splvm();
- xpq_queue_lock();
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
}
#endif
Index: src/sys/arch/i386/i386/gdt.c
diff -u src/sys/arch/i386/i386/gdt.c:1.50.10.2 src/sys/arch/i386/i386/gdt.c:1.50.10.3
--- src/sys/arch/i386/i386/gdt.c:1.50.10.2 Sat Aug 6 14:05:35 2011
+++ src/sys/arch/i386/i386/gdt.c Tue Sep 20 18:57:51 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: gdt.c,v 1.50.10.2 2011/08/06 14:05:35 cherry Exp $ */
+/* $NetBSD: gdt.c,v 1.50.10.3 2011/09/20 18:57:51 cherry Exp $ */
/*-
* Copyright (c) 1996, 1997, 2009 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gdt.c,v 1.50.10.2 2011/08/06 14:05:35 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gdt.c,v 1.50.10.3 2011/09/20 18:57:51 cherry Exp $");
#include "opt_multiprocessor.h"
#include "opt_xen.h"
@@ -214,11 +214,9 @@
* properly yet, ie; curcpu() won't work at this
* point and spl() will break.
*/
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(ptp),
*ptp & ~PG_RW);
xpq_flush_queue();
- xpq_queue_unlock();
}
}
Index: src/sys/arch/i386/i386/machdep.c
diff -u src/sys/arch/i386/i386/machdep.c:1.702.2.6 src/sys/arch/i386/i386/machdep.c:1.702.2.7
--- src/sys/arch/i386/i386/machdep.c:1.702.2.6 Tue Aug 30 12:53:45 2011
+++ src/sys/arch/i386/i386/machdep.c Tue Sep 20 18:57:51 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: machdep.c,v 1.702.2.6 2011/08/30 12:53:45 cherry Exp $ */
+/* $NetBSD: machdep.c,v 1.702.2.7 2011/09/20 18:57:51 cherry Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 2000, 2004, 2006, 2008, 2009
@@ -67,7 +67,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.702.2.6 2011/08/30 12:53:45 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.702.2.7 2011/09/20 18:57:51 cherry Exp $");
#include "opt_beep.h"
#include "opt_compat_ibcs2.h"
@@ -1207,10 +1207,8 @@
npte = pmap_pa2pte((vaddr_t)gdt - KERNBASE);
npte |= PG_RO | pg_nx | PG_V;
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(pte), npte);
xpq_flush_queue();
- xpq_queue_unlock();
}
XENPRINTK(("loading gdt %lx, %d entries\n", frames[0] << PAGE_SHIFT,
Index: src/sys/arch/i386/include/pmap.h
diff -u src/sys/arch/i386/include/pmap.h:1.109.2.2 src/sys/arch/i386/include/pmap.h:1.109.2.3
--- src/sys/arch/i386/include/pmap.h:1.109.2.2 Sat Aug 20 19:22:46 2011
+++ src/sys/arch/i386/include/pmap.h Tue Sep 20 18:57:51 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.h,v 1.109.2.2 2011/08/20 19:22:46 cherry Exp $ */
+/* $NetBSD: pmap.h,v 1.109.2.3 2011/09/20 18:57:51 cherry Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -369,9 +369,7 @@
pmap_pte_set(pt_entry_t *pte, pt_entry_t npte)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(pte), npte);
- xpq_queue_unlock();
splx(s);
}
@@ -379,14 +377,12 @@
pmap_pte_cas(volatile pt_entry_t *ptep, pt_entry_t o, pt_entry_t n)
{
int s = splvm();
- xpq_queue_lock();
pt_entry_t opte = *ptep;
if (opte == o) {
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(ptep)), n);
xpq_flush_queue();
}
- xpq_queue_unlock();
splx(s);
return opte;
}
@@ -395,12 +391,10 @@
pmap_pte_testset(volatile pt_entry_t *pte, pt_entry_t npte)
{
int s = splvm();
- xpq_queue_lock();
pt_entry_t opte = *pte;
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(pte)),
npte);
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
return opte;
}
@@ -409,10 +403,8 @@
pmap_pte_setbits(volatile pt_entry_t *pte, pt_entry_t bits)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(pte)), (*pte) | bits);
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
}
@@ -420,11 +412,9 @@
pmap_pte_clearbits(volatile pt_entry_t *pte, pt_entry_t bits)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(__UNVOLATILE(pte)),
(*pte) & ~bits);
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
}
@@ -432,9 +422,7 @@
pmap_pte_flush(void)
{
int s = splvm();
- xpq_queue_lock();
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
}
Index: src/sys/arch/x86/include/pmap.h
diff -u src/sys/arch/x86/include/pmap.h:1.38.2.2 src/sys/arch/x86/include/pmap.h:1.38.2.3
--- src/sys/arch/x86/include/pmap.h:1.38.2.2 Thu Jun 23 14:19:48 2011
+++ src/sys/arch/x86/include/pmap.h Tue Sep 20 18:57:52 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.h,v 1.38.2.2 2011/06/23 14:19:48 cherry Exp $ */
+/* $NetBSD: pmap.h,v 1.38.2.3 2011/09/20 18:57:52 cherry Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -431,11 +431,8 @@
xpmap_update (pt_entry_t *pte, pt_entry_t npte)
{
int s = splvm();
-
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(pte), npte);
xpq_flush_queue();
- xpq_queue_unlock();
splx(s);
}
Index: src/sys/arch/x86/x86/pmap.c
diff -u src/sys/arch/x86/x86/pmap.c:1.121.2.7 src/sys/arch/x86/x86/pmap.c:1.121.2.8
--- src/sys/arch/x86/x86/pmap.c:1.121.2.7 Fri Sep 9 11:38:20 2011
+++ src/sys/arch/x86/x86/pmap.c Tue Sep 20 18:57:52 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.121.2.7 2011/09/09 11:38:20 cherry Exp $ */
+/* $NetBSD: pmap.c,v 1.121.2.8 2011/09/20 18:57:52 cherry Exp $ */
/*-
* Copyright (c) 2008, 2010 The NetBSD Foundation, Inc.
@@ -171,7 +171,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.121.2.7 2011/09/09 11:38:20 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.121.2.8 2011/09/20 18:57:52 cherry Exp $");
#include "opt_user_ldt.h"
#include "opt_lockdebug.h"
@@ -1378,9 +1378,7 @@
HYPERVISOR_update_va_mapping(xen_dummy_user_pgd + KERNBASE,
pmap_pa2pte(xen_dummy_user_pgd) | PG_u | PG_V, UVMF_INVLPG);
/* Pin as L4 */
- xpq_queue_lock();
xpq_queue_pin_l4_table(xpmap_ptom_masked(xen_dummy_user_pgd));
- xpq_queue_unlock();
#endif /* __x86_64__ */
idt_vaddr = virtual_avail; /* don't need pte */
idt_paddr = avail_start; /* steal a page */
@@ -1495,7 +1493,6 @@
if (newp < (NKL2_KIMG_ENTRIES * NBPD_L2))
HYPERVISOR_update_va_mapping (newp + KERNBASE,
xpmap_ptom_masked(newp) | PG_u | PG_V, UVMF_INVLPG);
- xpq_queue_lock();
/* Update the pmap_kernel() L4 shadow */
xpq_queue_pte_update (
xpmap_ptom_masked(pdes_pa)
@@ -1508,7 +1505,6 @@
pl_i(0, PTP_LEVELS) *
sizeof(pd_entry_t)),
pmap_kernel()->pm_pdir[pl_i(0, PTP_LEVELS)]);
- xpq_queue_unlock();
pmap_pte_flush();
level--;
@@ -2094,21 +2090,16 @@
continue;
#endif
- xpq_queue_lock();
#ifdef __x86_64__
xpq_queue_pin_l4_table(xpmap_ptom_masked(pdirpa));
#else
xpq_queue_pin_l2_table(xpmap_ptom_masked(pdirpa));
#endif
- xpq_queue_unlock();
-
}
#ifdef PAE
object = ((vaddr_t)pdir) + PAGE_SIZE * l2tol3(PDIR_SLOT_PTE);
(void)pmap_extract(pmap_kernel(), object, &pdirpa);
- xpq_queue_lock();
xpq_queue_pin_l2_table(xpmap_ptom_masked(pdirpa));
- xpq_queue_unlock();
#endif
splx(s);
#endif /* XEN */
@@ -2134,18 +2125,14 @@
/* fetch the physical address of the page directory. */
(void) pmap_extract(pmap_kernel(), object, &pdirpa);
/* unpin page table */
- xpq_queue_lock();
xpq_queue_unpin_table(xpmap_ptom_masked(pdirpa));
- xpq_queue_unlock();
}
object = (vaddr_t)v;
for (i = 0; i < PDP_SIZE; i++, object += PAGE_SIZE) {
/* Set page RW again */
pte = kvtopte(object);
- xpq_queue_lock();
xpq_queue_pte_update(xpmap_ptetomach(pte), *pte | PG_RW);
xpq_queue_invlpg((vaddr_t)object);
- xpq_queue_unlock();
}
splx(s);
#endif /* XEN */
@@ -4152,7 +4139,6 @@
pmap_get_physpage(va, &pa);
pte = pmap_pa2pte(pa) | PG_k | PG_V | PG_RW;
#ifdef XEN
- xpq_queue_lock();
switch (level) {
case PTP_LEVELS:
#if defined(PAE) || defined(__x86_64__)
@@ -4181,7 +4167,6 @@
xpmap_ptetomach(&pdep[i]),
pte);
}
- xpq_queue_unlock();
#else /* XEN */
pdep[i] = pte;
#endif /* XEN */
@@ -4254,7 +4239,6 @@
/* nothing, kernel entries are never entered in user pmap */
#else /* __x86_64__ */
mutex_enter(&pmaps_lock);
- xpq_queue_lock();
LIST_FOREACH(pm, &pmaps, pm_list) {
int pdkidx;
for (pdkidx = PDIR_SLOT_KERN + old;
@@ -4267,7 +4251,6 @@
}
xpq_flush_queue();
}
- xpq_queue_unlock();
mutex_exit(&pmaps_lock);
#endif /* __x86_64__ */
#else /* XEN */
Index: src/sys/arch/x86/x86/pmap_tlb.c
diff -u src/sys/arch/x86/x86/pmap_tlb.c:1.3.2.4 src/sys/arch/x86/x86/pmap_tlb.c:1.3.2.5
--- src/sys/arch/x86/x86/pmap_tlb.c:1.3.2.4 Sun Jul 31 20:55:22 2011
+++ src/sys/arch/x86/x86/pmap_tlb.c Tue Sep 20 18:57:52 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap_tlb.c,v 1.3.2.4 2011/07/31 20:55:22 cherry Exp $ */
+/* $NetBSD: pmap_tlb.c,v 1.3.2.5 2011/09/20 18:57:52 cherry Exp $ */
/*-
* Copyright (c) 2008-2011 The NetBSD Foundation, Inc.
@@ -40,7 +40,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap_tlb.c,v 1.3.2.4 2011/07/31 20:55:22 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap_tlb.c,v 1.3.2.5 2011/09/20 18:57:52 cherry Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@@ -268,7 +268,6 @@
static inline void pmap_xen_tlbflush(pmap_tlb_packet_t *tp)
{
struct cpu_info *self = curcpu();
- xpq_queue_lock();
if (tp->tp_count == (uint16_t)-1) {
xen_mcast_tlbflush(tp->tp_cpumask &
cpus_running &
@@ -286,7 +285,6 @@
/* Ack the request */
atomic_and_32(&pmap_tlb_mailbox.tm_pending, ~tp->tp_cpumask);
- xpq_queue_unlock();
}
#else
static inline void pmap_send_ipi(pmap_tlb_packet_t *tp)
Index: src/sys/arch/xen/include/xenpmap.h
diff -u src/sys/arch/xen/include/xenpmap.h:1.27.2.4 src/sys/arch/xen/include/xenpmap.h:1.27.2.5
--- src/sys/arch/xen/include/xenpmap.h:1.27.2.4 Fri Sep 9 11:38:20 2011
+++ src/sys/arch/xen/include/xenpmap.h Tue Sep 20 18:57:52 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: xenpmap.h,v 1.27.2.4 2011/09/09 11:38:20 cherry Exp $ */
+/* $NetBSD: xenpmap.h,v 1.27.2.5 2011/09/20 18:57:52 cherry Exp $ */
/*
*
@@ -43,16 +43,6 @@
#define INVALID_P2M_ENTRY (~0UL)
-#ifdef MULTIPROCESSOR
-void xpq_queue_lock(void);
-void xpq_queue_unlock(void);
-bool xpq_queue_locked(void);
-#else /* MULTIPROCESSOR */
-#define xpq_queue_lock() do {} while(0) /* nothing */
-#define xpq_queue_unlock() do {} while(0) /* nothing */
-#define xpq_queue_locked() (true) /* Always true for UP */
-#endif /* MULTIPROCESSOR */
-
void xpq_queue_machphys_update(paddr_t, paddr_t);
void xpq_queue_invlpg(vaddr_t);
void xpq_queue_pte_update(paddr_t, pt_entry_t);
Index: src/sys/arch/xen/x86/cpu.c
diff -u src/sys/arch/xen/x86/cpu.c:1.56.2.11 src/sys/arch/xen/x86/cpu.c:1.56.2.12
--- src/sys/arch/xen/x86/cpu.c:1.56.2.11 Fri Sep 9 11:53:43 2011
+++ src/sys/arch/xen/x86/cpu.c Tue Sep 20 18:57:52 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu.c,v 1.56.2.11 2011/09/09 11:53:43 cherry Exp $ */
+/* $NetBSD: cpu.c,v 1.56.2.12 2011/09/20 18:57:52 cherry Exp $ */
/* NetBSD: cpu.c,v 1.18 2004/02/20 17:35:01 yamt Exp */
/*-
@@ -66,7 +66,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.56.2.11 2011/09/09 11:53:43 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.56.2.12 2011/09/20 18:57:52 cherry Exp $");
#include "opt_ddb.h"
#include "opt_multiprocessor.h"
@@ -1243,7 +1243,6 @@
struct cpu_info *ci;
s = splvm(); /* just to be safe */
- xpq_queue_lock();
ci = curcpu();
paddr_t l3_pd = xpmap_ptom_masked(ci->ci_pae_l3_pdirpa);
/* don't update the kernel L3 slot */
@@ -1251,7 +1250,6 @@
xpq_queue_pte_update(l3_pd + i * sizeof(pd_entry_t),
xpmap_ptom(pmap->pm_pdirpa[i]) | PG_V);
}
- xpq_queue_unlock();
splx(s);
tlbflush();
#else /* PAE */
@@ -1275,8 +1273,6 @@
s = splvm();
new_pgd = pmap->pm_pdir;
- xpq_queue_lock();
-
/* Copy user pmap L4 PDEs (in user addr. range) to per-cpu L4 */
for (i = 0; i < PDIR_SLOT_PTE; i++) {
xpq_queue_pte_update(l4_pd_ma + i * sizeof(pd_entry_t), new_pgd[i]);
@@ -1290,7 +1286,6 @@
xpq_queue_pt_switch(l4_pd_ma);
ci->ci_xen_current_user_pgd = 0;
}
- xpq_queue_unlock();
tlbflush();
@@ -1398,14 +1393,10 @@
pmap_kenter_pa((vaddr_t)ci->ci_pae_l3_pdir, ci->ci_pae_l3_pdirpa,
VM_PROT_READ, 0);
- xpq_queue_lock();
xpq_queue_pin_l3_table(xpmap_ptom_masked(ci->ci_pae_l3_pdirpa));
- xpq_queue_unlock();
#elif defined(__x86_64__)
- xpq_queue_lock();
xpq_queue_pin_l4_table(xpmap_ptom_masked(ci->ci_kpm_pdirpa));
- xpq_queue_unlock();
#endif /* PAE */
#endif /* defined(PAE) || defined(__x86_64__) */
}
Index: src/sys/arch/xen/x86/x86_xpmap.c
diff -u src/sys/arch/xen/x86/x86_xpmap.c:1.26.2.10 src/sys/arch/xen/x86/x86_xpmap.c:1.26.2.11
--- src/sys/arch/xen/x86/x86_xpmap.c:1.26.2.10 Sun Sep 18 16:48:23 2011
+++ src/sys/arch/xen/x86/x86_xpmap.c Tue Sep 20 18:57:53 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: x86_xpmap.c,v 1.26.2.10 2011/09/18 16:48:23 cherry Exp $ */
+/* $NetBSD: x86_xpmap.c,v 1.26.2.11 2011/09/20 18:57:53 cherry Exp $ */
/*
* Copyright (c) 2006 Mathieu Ropert <[email protected]>
@@ -69,7 +69,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: x86_xpmap.c,v 1.26.2.10 2011/09/18 16:48:23 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: x86_xpmap.c,v 1.26.2.11 2011/09/20 18:57:53 cherry Exp $");
#include "opt_xen.h"
#include "opt_ddb.h"
@@ -153,9 +153,7 @@
pmap_pte_clearbits(ptp, PG_RW);
}
s = splvm();
- xpq_queue_lock();
xpq_queue_set_ldt(base, entries);
- xpq_queue_unlock();
splx(s);
}
@@ -168,50 +166,34 @@
static int xpq_idx_array[MAXCPUS];
#ifdef MULTIPROCESSOR
-static struct simplelock xpq_lock[MAXCPUS];
-
extern struct cpu_info * (*xpq_cpu)(void);
-
-void
-xpq_queue_lock(void)
-{
- simple_lock(&xpq_lock[xpq_cpu()->ci_cpuid]);
-}
-
-void
-xpq_queue_unlock(void)
-{
- simple_unlock(&xpq_lock[xpq_cpu()->ci_cpuid]);
-}
-
-bool
-xpq_queue_locked(void)
-{
- return simple_lock_held(&xpq_lock[xpq_cpu()->ci_cpuid]);
-}
#endif /* MULTIPROCESSOR */
-/* Must be called with xpq_lock held */
void
xpq_flush_queue(void)
{
- int i, ok, ret;
+ int i, ok = 0, ret;
mmu_update_t *xpq_queue = xpq_queue_array[xpq_cpu()->ci_cpuid];
int xpq_idx = xpq_idx_array[xpq_cpu()->ci_cpuid];
- KASSERT(xpq_queue_locked());
-
XENPRINTK2(("flush queue %p entries %d\n", xpq_queue, xpq_idx));
for (i = 0; i < xpq_idx; i++)
XENPRINTK2(("%d: 0x%08" PRIx64 " 0x%08" PRIx64 "\n", i,
xpq_queue[i].ptr, xpq_queue[i].val));
-
+retry:
ret = HYPERVISOR_mmu_update_self(xpq_queue, xpq_idx, &ok);
if (xpq_idx != 0 && ret < 0) {
printf("xpq_flush_queue: %d entries (%d successful)\n",
xpq_idx, ok);
+ if (ok != 0) {
+ xpq_queue += ok;
+ xpq_idx -= ok;
+ ok = 0;
+ goto retry;
+ }
+
for (i = 0; i < xpq_idx; i++)
printf("0x%016" PRIx64 ": 0x%016" PRIx64 "\n",
xpq_queue[i].ptr, xpq_queue[i].val);
@@ -220,13 +202,10 @@
xpq_idx_array[xpq_cpu()->ci_cpuid] = 0;
}
-/* Must be called with xpq_lock held */
static inline void
xpq_increment_idx(void)
{
- KASSERT(xpq_queue_locked());
-
if (__predict_false(++xpq_idx_array[xpq_cpu()->ci_cpuid] == XPQUEUE_SIZE))
xpq_flush_queue();
}
@@ -239,7 +218,7 @@
XENPRINTK2(("xpq_queue_machphys_update ma=0x%" PRIx64 " pa=0x%" PRIx64
"\n", (int64_t)ma, (int64_t)pa));
- KASSERT(xpq_queue_locked());
+
xpq_queue[xpq_idx].ptr = ma | MMU_MACHPHYS_UPDATE;
xpq_queue[xpq_idx].val = (pa - XPMAP_OFFSET) >> PAGE_SHIFT;
xpq_increment_idx();
@@ -256,7 +235,6 @@
int xpq_idx = xpq_idx_array[xpq_cpu()->ci_cpuid];
KASSERT((ptr & 3) == 0);
- KASSERT(xpq_queue_locked());
xpq_queue[xpq_idx].ptr = (paddr_t)ptr | MMU_NORMAL_PT_UPDATE;
xpq_queue[xpq_idx].val = val;
xpq_increment_idx();
@@ -269,7 +247,6 @@
xpq_queue_pt_switch(paddr_t pa)
{
struct mmuext_op op;
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
XENPRINTK2(("xpq_queue_pt_switch: 0x%" PRIx64 " 0x%" PRIx64 "\n",
@@ -285,7 +262,6 @@
{
struct mmuext_op op;
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
XENPRINTK2(("xpq_queue_pin_l%d_table: %#" PRIxPADDR "\n",
@@ -303,7 +279,6 @@
{
struct mmuext_op op;
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
XENPRINTK2(("xpq_queue_unpin_table: %#" PRIxPADDR "\n", pa));
@@ -318,7 +293,6 @@
{
struct mmuext_op op;
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
XENPRINTK2(("xpq_queue_set_ldt\n"));
@@ -335,7 +309,6 @@
{
struct mmuext_op op;
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
XENPRINTK2(("xpq_queue_tlb_flush\n"));
@@ -350,15 +323,12 @@
struct mmuext_op op;
int s = splvm(), err;
- xpq_queue_lock();
xpq_flush_queue();
-
XENPRINTK2(("xpq_queue_flush_cache\n"));
op.cmd = MMUEXT_FLUSH_CACHE;
if ((err = HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF)) < 0)
printf("errno == %d\n", err);
panic("xpq_flush_cache");
- xpq_queue_unlock();
splx(s); /* XXX: removeme */
}
@@ -366,7 +336,7 @@
xpq_queue_invlpg(vaddr_t va)
{
struct mmuext_op op;
- KASSERT(xpq_queue_locked());
+
xpq_flush_queue();
XENPRINTK2(("xpq_queue_invlpg %#" PRIxVADDR "\n", va));
@@ -381,8 +351,6 @@
{
mmuext_op_t op;
- KASSERT(xpq_queue_locked());
-
/* Flush pending page updates */
xpq_flush_queue();
@@ -403,7 +371,6 @@
mmuext_op_t op;
/* Flush pending page updates */
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
op.cmd = MMUEXT_INVLPG_ALL;
@@ -423,7 +390,6 @@
mmuext_op_t op;
/* Flush pending page updates */
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
op.cmd = MMUEXT_TLB_FLUSH_MULTI;
@@ -443,7 +409,6 @@
mmuext_op_t op;
/* Flush pending page updates */
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
op.cmd = MMUEXT_TLB_FLUSH_ALL;
@@ -462,7 +427,6 @@
KASSERT(eva > sva);
/* Flush pending page updates */
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
/* Align to nearest page boundary */
@@ -483,7 +447,6 @@
KASSERT(eva > sva);
/* Flush pending page updates */
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
/* Align to nearest page boundary */
@@ -503,7 +466,6 @@
mmu_update_t op;
int ok;
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
op.ptr = ptr;
@@ -589,14 +551,11 @@
vaddr_t
xen_pmap_bootstrap(void)
{
- int count, oldcount, i;
+ int count, oldcount;
long mapsize;
vaddr_t bootstrap_tables, init_tables;
memset(xpq_idx_array, 0, sizeof xpq_idx_array);
- for (i = 0; i < MAXCPUS;i++) {
- simple_lock_init(&xpq_lock[i]);
- }
xpmap_phys_to_machine_mapping =
(unsigned long *)xen_start_info.mfn_list;
@@ -690,9 +649,7 @@
(UPAGES + 1) * NBPG);
/* Finally, flush TLB. */
- xpq_queue_lock();
xpq_queue_tlb_flush();
- xpq_queue_unlock();
return (init_tables + ((count + l2_4_count) * PAGE_SIZE));
}
@@ -714,8 +671,6 @@
int i;
extern char __data_start;
- xpq_queue_lock();
-
__PRINTK(("xen_bootstrap_tables(%#" PRIxVADDR ", %#" PRIxVADDR ","
" %d, %d)\n",
old_pgd, new_pgd, old_count, new_count));
@@ -1067,7 +1022,7 @@
pte++;
}
xpq_flush_queue();
- xpq_queue_unlock();
+
}
@@ -1098,7 +1053,6 @@
struct mmuext_op op;
int s = splvm();
- KASSERT(xpq_queue_locked());
xpq_flush_queue();
op.cmd = MMUEXT_NEW_USER_BASEPTR;
op.arg1.mfn = xpmap_phys_to_machine_mapping[page >> PAGE_SHIFT];
Index: src/sys/arch/xen/x86/xen_bus_dma.c
diff -u src/sys/arch/xen/x86/xen_bus_dma.c:1.22.6.1 src/sys/arch/xen/x86/xen_bus_dma.c:1.22.6.2
--- src/sys/arch/xen/x86/xen_bus_dma.c:1.22.6.1 Fri Jun 3 13:27:41 2011
+++ src/sys/arch/xen/x86/xen_bus_dma.c Tue Sep 20 18:57:53 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: xen_bus_dma.c,v 1.22.6.1 2011/06/03 13:27:41 cherry Exp $ */
+/* $NetBSD: xen_bus_dma.c,v 1.22.6.2 2011/09/20 18:57:53 cherry Exp $ */
/* NetBSD bus_dma.c,v 1.21 2005/04/16 07:53:35 yamt Exp */
/*-
@@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xen_bus_dma.c,v 1.22.6.1 2011/06/03 13:27:41 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xen_bus_dma.c,v 1.22.6.2 2011/09/20 18:57:53 cherry Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -129,7 +129,6 @@
goto failed;
}
s = splvm();
- xpq_queue_lock();
/* Map the new extent in place of the old pages */
for (pg = mlistp->tqh_first, i = 0; pg != NULL; pg = pgnext, i++) {
pgnext = pg->pageq.queue.tqe_next;
@@ -145,7 +144,6 @@
}
/* Flush updates through and flush the TLB */
xpq_queue_tlb_flush();
- xpq_queue_unlock();
splx(s);
return 0;
Index: src/sys/arch/xen/x86/xen_pmap.c
diff -u src/sys/arch/xen/x86/xen_pmap.c:1.2.2.4 src/sys/arch/xen/x86/xen_pmap.c:1.2.2.5
--- src/sys/arch/xen/x86/xen_pmap.c:1.2.2.4 Mon Aug 22 17:39:19 2011
+++ src/sys/arch/xen/x86/xen_pmap.c Tue Sep 20 18:57:53 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: xen_pmap.c,v 1.2.2.4 2011/08/22 17:39:19 cherry Exp $ */
+/* $NetBSD: xen_pmap.c,v 1.2.2.5 2011/09/20 18:57:53 cherry Exp $ */
/*
* Copyright (c) 2007 Manuel Bouyer.
@@ -102,7 +102,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xen_pmap.c,v 1.2.2.4 2011/08/22 17:39:19 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xen_pmap.c,v 1.2.2.5 2011/09/20 18:57:53 cherry Exp $");
#include "opt_user_ldt.h"
#include "opt_lockdebug.h"
@@ -270,7 +270,6 @@
pmap_pte2pa(opde) != pmap_pdirpa(pmap, 0)) {
int i;
s = splvm();
- xpq_queue_lock();
/* Make recursive entry usable in user PGD */
for (i = 0; i < PDP_SIZE; i++) {
npde = pmap_pa2pte(
@@ -293,7 +292,6 @@
}
if (pmap_valid_entry(opde))
pmap_apte_flush(ourpmap);
- xpq_queue_unlock();
splx(s);
}
*pmap2 = ourpmap;
Index: src/sys/arch/xen/x86/xenfunc.c
diff -u src/sys/arch/xen/x86/xenfunc.c:1.11.6.2 src/sys/arch/xen/x86/xenfunc.c:1.11.6.3
--- src/sys/arch/xen/x86/xenfunc.c:1.11.6.2 Sun Jul 31 20:49:12 2011
+++ src/sys/arch/xen/x86/xenfunc.c Tue Sep 20 18:57:53 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: xenfunc.c,v 1.11.6.2 2011/07/31 20:49:12 cherry Exp $ */
+/* $NetBSD: xenfunc.c,v 1.11.6.3 2011/09/20 18:57:53 cherry Exp $ */
/*
*
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xenfunc.c,v 1.11.6.2 2011/07/31 20:49:12 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xenfunc.c,v 1.11.6.3 2011/09/20 18:57:53 cherry Exp $");
#include <sys/param.h>
@@ -54,9 +54,7 @@
invlpg(vaddr_t addr)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_invlpg(addr);
- xpq_queue_unlock();
splx(s);
}
@@ -104,9 +102,7 @@
lcr3(vaddr_t val)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_pt_switch(xpmap_ptom_masked(val));
- xpq_queue_unlock();
splx(s);
}
#endif
@@ -115,9 +111,7 @@
tlbflush(void)
{
int s = splvm();
- xpq_queue_lock();
xpq_queue_tlb_flush();
- xpq_queue_unlock();
splx(s);
}
Index: src/sys/arch/xen/xen/if_xennet_xenbus.c
diff -u src/sys/arch/xen/xen/if_xennet_xenbus.c:1.51.2.1 src/sys/arch/xen/xen/if_xennet_xenbus.c:1.51.2.2
--- src/sys/arch/xen/xen/if_xennet_xenbus.c:1.51.2.1 Sun Aug 21 11:24:10 2011
+++ src/sys/arch/xen/xen/if_xennet_xenbus.c Tue Sep 20 18:57:53 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: if_xennet_xenbus.c,v 1.51.2.1 2011/08/21 11:24:10 cherry Exp $ */
+/* $NetBSD: if_xennet_xenbus.c,v 1.51.2.2 2011/09/20 18:57:53 cherry Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@@ -85,7 +85,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_xennet_xenbus.c,v 1.51.2.1 2011/08/21 11:24:10 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_xennet_xenbus.c,v 1.51.2.2 2011/09/20 18:57:53 cherry Exp $");
#include "opt_xen.h"
#include "opt_nfs_boot.h"
@@ -188,6 +188,8 @@
grant_ref_t sc_tx_ring_gntref;
grant_ref_t sc_rx_ring_gntref;
+ kmutex_t sc_tx_lock; /* protects free TX list, below */
+ kmutex_t sc_rx_lock; /* protects free RX list, below */
struct xennet_txreq sc_txreqs[NET_TX_RING_SIZE];
struct xennet_rxreq sc_rxreqs[NET_RX_RING_SIZE];
SLIST_HEAD(,xennet_txreq) sc_txreq_head; /* list of free TX requests */
@@ -301,12 +303,14 @@
sc->sc_xbusd->xbusd_otherend_changed = xennet_backend_changed;
/* initialize free RX and RX request lists */
+ mutex_init(&sc->sc_tx_lock, MUTEX_DEFAULT, IPL_NET);
SLIST_INIT(&sc->sc_txreq_head);
for (i = 0; i < NET_TX_RING_SIZE; i++) {
sc->sc_txreqs[i].txreq_id = i;
SLIST_INSERT_HEAD(&sc->sc_txreq_head, &sc->sc_txreqs[i],
txreq_next);
}
+ mutex_init(&sc->sc_rx_lock, MUTEX_DEFAULT, IPL_NET);
SLIST_INIT(&sc->sc_rxreq_head);
s = splvm();
for (i = 0; i < NET_RX_RING_SIZE; i++) {
@@ -595,12 +599,12 @@
RING_IDX i;
struct xennet_rxreq *req;
struct xen_memory_reservation reservation;
- int s1, s2, otherend_id;
+ int s, otherend_id;
paddr_t pfn;
otherend_id = sc->sc_xbusd->xbusd_otherend_id;
- s1 = splnet();
+ mutex_enter(&sc->sc_rx_lock);
for (i = 0; sc->sc_free_rxreql != 0; i++) {
req = SLIST_FIRST(&sc->sc_rxreq_head);
KASSERT(req != NULL);
@@ -649,7 +653,7 @@
out_loop:
if (i == 0) {
- splx(s1);
+ mutex_exit(&sc->sc_rx_lock);
return;
}
@@ -662,11 +666,9 @@
* outstanding in the page update queue -- make sure we flush
* those first!
*/
- s2 = splvm();
- xpq_queue_lock();
+ s = splvm();
xpq_flush_queue();
- xpq_queue_unlock();
- splx(s2);
+ splx(s);
/* now decrease reservation */
xenguest_handle(reservation.extent_start) = xennet_pages;
reservation.nr_extents = i;
@@ -686,7 +688,7 @@
sc->sc_rx_ring.req_prod_pvt = req_prod + i;
RING_PUSH_REQUESTS(&sc->sc_rx_ring);
- splx(s1);
+ mutex_exit(&sc->sc_rx_lock);
return;
}
@@ -722,10 +724,11 @@
* this req is still granted. Get back the page or
* allocate a new one, and remap it.
*/
+ mutex_enter(&sc->sc_rx_lock);
SLIST_INSERT_HEAD(&sc->sc_rxreq_head, rxreq,
rxreq_next);
sc->sc_free_rxreql++;
-
+ mutex_exit(&sc->sc_rx_lock);
switch (sc->sc_rx_feature) {
case FEATURE_RX_COPY:
xengnt_revoke_access(rxreq->rxreq_gntref);
@@ -792,12 +795,14 @@
struct xennet_rxreq *req = arg;
struct xennet_xenbus_softc *sc = req->rxreq_sc;
- int s = splnet();
+ mutex_enter(&sc->sc_rx_lock);
/* puts back the RX request in the list of free RX requests */
SLIST_INSERT_HEAD(&sc->sc_rxreq_head, req, rxreq_next);
sc->sc_free_rxreql++;
+ mutex_exit(&sc->sc_rx_lock);
+
/*
* ring needs more requests to be pushed in, allocate some
* RX buffers to catch-up with backend's consumption
@@ -810,7 +815,6 @@
if (m)
pool_cache_put(mb_cache, m);
- splx(s);
}
/*
@@ -849,7 +853,9 @@
ifp->if_opackets++;
xengnt_revoke_access(req->txreq_gntref);
m_freem(req->txreq_m);
+ mutex_enter(&sc->sc_tx_lock);
SLIST_INSERT_HEAD(&sc->sc_txreq_head, req, txreq_next);
+ mutex_exit(&sc->sc_tx_lock);
}
sc->sc_tx_ring.rsp_cons = resp_prod;
/* set new event and check for race with rsp_cons update */
@@ -1082,12 +1088,11 @@
struct xennet_txreq *req;
int notify;
int do_notify = 0;
- int s;
- s = splnet();
+ mutex_enter(&sc->sc_tx_lock);
if (__predict_false(
(ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)) {
- splx(s);
+ mutex_exit(&sc->sc_tx_lock);
return;
}
@@ -1241,7 +1246,7 @@
hypervisor_notify_via_evtchn(sc->sc_evtchn);
ifp->if_timer = 5;
}
- splx(s);
+ mutex_exit(&sc->sc_tx_lock);
DPRINTFN(XEDB_FOLLOW, ("%s: xennet_start() done\n",
device_xname(sc->sc_dev)));
@@ -1280,7 +1285,7 @@
xennet_init(struct ifnet *ifp)
{
struct xennet_xenbus_softc *sc = ifp->if_softc;
- int s = splnet();
+ mutex_enter(&sc->sc_rx_lock);
DPRINTFN(XEDB_FOLLOW, ("%s: xennet_init()\n",
device_xname(sc->sc_dev)));
@@ -1295,7 +1300,7 @@
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_timer = 0;
- splx(s);
+ mutex_exit(&sc->sc_rx_lock);
return 0;
}
@@ -1303,12 +1308,14 @@
xennet_stop(struct ifnet *ifp, int disable)
{
struct xennet_xenbus_softc *sc = ifp->if_softc;
- int s = splnet();
+ mutex_enter(&sc->sc_tx_lock);
+ mutex_enter(&sc->sc_rx_lock);
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
hypervisor_mask_event(sc->sc_evtchn);
xennet_reset(sc);
- splx(s);
+ mutex_exit(&sc->sc_rx_lock);
+ mutex_exit(&sc->sc_tx_lock);
}
void
Index: src/sys/arch/xen/xen/xennetback_xenbus.c
diff -u src/sys/arch/xen/xen/xennetback_xenbus.c:1.46.2.1 src/sys/arch/xen/xen/xennetback_xenbus.c:1.46.2.2
--- src/sys/arch/xen/xen/xennetback_xenbus.c:1.46.2.1 Sun Aug 21 11:24:10 2011
+++ src/sys/arch/xen/xen/xennetback_xenbus.c Tue Sep 20 18:57:54 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: xennetback_xenbus.c,v 1.46.2.1 2011/08/21 11:24:10 cherry Exp $ */
+/* $NetBSD: xennetback_xenbus.c,v 1.46.2.2 2011/09/20 18:57:54 cherry Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@@ -26,7 +26,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xennetback_xenbus.c,v 1.46.2.1 2011/08/21 11:24:10 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xennetback_xenbus.c,v 1.46.2.2 2011/09/20 18:57:54 cherry Exp $");
#include "opt_xen.h"
@@ -1077,9 +1077,7 @@
* we flush those first!
*/
int svm = splvm();
- xpq_queue_lock();
xpq_flush_queue();
- xpq_queue_unlock();
splx(svm);
mclp[-1].args[MULTI_UVMFLAGS_INDEX] =
UVMF_TLB_FLUSH|UVMF_ALL;
