# HG changeset patch
# User cl349@xxxxxxxxxxxxxxxxxxxx
# Node ID 1fc6473ecc01534798a94ada161878dfa3330e2a
# Parent 9225c3f597db755f448429a270200c0d2c7a5a78
# Parent 551870a55f240791695d30fd7fa92a1bf4e48387
merge?
diff -r 9225c3f597db -r 1fc6473ecc01
linux-2.6-xen-sparse/arch/xen/kernel/evtchn.c
--- a/linux-2.6-xen-sparse/arch/xen/kernel/evtchn.c Tue Aug 30 20:02:59 2005
+++ b/linux-2.6-xen-sparse/arch/xen/kernel/evtchn.c Tue Aug 30 20:03:51 2005
@@ -44,13 +44,6 @@
#include <asm-xen/hypervisor.h>
#include <asm-xen/evtchn.h>
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
-EXPORT_SYMBOL(force_evtchn_callback);
-EXPORT_SYMBOL(evtchn_do_upcall);
-EXPORT_SYMBOL(bind_evtchn_to_irq);
-EXPORT_SYMBOL(unbind_evtchn_from_irq);
-#endif
-
/*
* This lock protects updates to the following mapping and reference-count
* arrays. The lock does not need to be acquired to read the mapping tables.
@@ -133,6 +126,7 @@
{
(void)HYPERVISOR_xen_version(0);
}
+EXPORT_SYMBOL(force_evtchn_callback);
/* NB. Interrupts are disabled on entry. */
asmlinkage void evtchn_do_upcall(struct pt_regs *regs)
@@ -165,6 +159,7 @@
}
}
}
+EXPORT_SYMBOL(evtchn_do_upcall);
static int find_unbound_irq(void)
{
@@ -211,6 +206,7 @@
return irq;
}
+EXPORT_SYMBOL(bind_virq_to_irq);
void unbind_virq_from_irq(int virq)
{
@@ -244,6 +240,7 @@
spin_unlock(&irq_mapping_update_lock);
}
+EXPORT_SYMBOL(unbind_virq_from_irq);
int bind_ipi_to_irq(int ipi)
{
@@ -279,6 +276,7 @@
return irq;
}
+EXPORT_SYMBOL(bind_ipi_to_irq);
void unbind_ipi_from_irq(int ipi)
{
@@ -306,6 +304,7 @@
spin_unlock(&irq_mapping_update_lock);
}
+EXPORT_SYMBOL(unbind_ipi_from_irq);
int bind_evtchn_to_irq(unsigned int evtchn)
{
@@ -326,6 +325,7 @@
return irq;
}
+EXPORT_SYMBOL(bind_evtchn_to_irq);
void unbind_evtchn_from_irq(unsigned int evtchn)
{
@@ -341,6 +341,7 @@
spin_unlock(&irq_mapping_update_lock);
}
+EXPORT_SYMBOL(unbind_evtchn_from_irq);
int bind_evtchn_to_irqhandler(
unsigned int evtchn,
@@ -359,6 +360,7 @@
return retval;
}
+EXPORT_SYMBOL(bind_evtchn_to_irqhandler);
void unbind_evtchn_from_irqhandler(unsigned int evtchn, void *dev_id)
{
@@ -366,6 +368,7 @@
free_irq(irq, dev_id);
unbind_evtchn_from_irq(evtchn);
}
+EXPORT_SYMBOL(unbind_evtchn_from_irqhandler);
#ifdef CONFIG_SMP
static void do_nothing_function(void *ign)
diff -r 9225c3f597db -r 1fc6473ecc01
linux-2.6-xen-sparse/arch/xen/x86_64/mm/fault.c
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/mm/fault.c Tue Aug 30 20:02:59 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/mm/fault.c Tue Aug 30 20:03:51 2005
@@ -149,7 +149,7 @@
pmd_t *pmd;
pte_t *pte;
- pgd = (pgd_t *)per_cpu(cur_pgd, smp_processor_id());
+ pgd = (pgd_t *)per_cpu(cur_pgd, smp_processor_id());
pgd += pgd_index(address);
printk("PGD %lx ", pgd_val(*pgd));
@@ -296,9 +296,9 @@
#define MEM_VERBOSE 1
#ifdef MEM_VERBOSE
-#define MEM_LOG(_f, _a...) \
- printk("fault.c:[%d]-> " _f "\n", \
- __LINE__ , ## _a )
+#define MEM_LOG(_f, _a...) \
+ printk("fault.c:[%d]-> " _f "\n", \
+ __LINE__ , ## _a )
#else
#define MEM_LOG(_f, _a...) ((void)0)
#endif
@@ -325,7 +325,7 @@
siginfo_t info;
if (!user_mode(regs))
- error_code &= ~4; /* means kernel */
+ error_code &= ~4; /* means kernel */
#ifdef CONFIG_CHECKING
{
diff -r 9225c3f597db -r 1fc6473ecc01
linux-2.6-xen-sparse/arch/xen/x86_64/mm/init.c
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/mm/init.c Tue Aug 30 20:02:59 2005
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/mm/init.c Tue Aug 30 20:03:51 2005
@@ -62,14 +62,16 @@
* avaialble in init_memory_mapping().
*/
-#define addr_to_page(addr, page) \
- (addr) &= PHYSICAL_PAGE_MASK; \
- (page) = ((unsigned long *) ((unsigned long)(((mfn_to_pfn((addr) >>
PAGE_SHIFT)) << PAGE_SHIFT) + __START_KERNEL_map)))
+#define addr_to_page(addr, page) \
+ (addr) &= PHYSICAL_PAGE_MASK; \
+ (page) = ((unsigned long *) ((unsigned long) \
+ (((mfn_to_pfn((addr) >> PAGE_SHIFT)) << PAGE_SHIFT) + \
+ __START_KERNEL_map)))
static void __make_page_readonly(unsigned long va)
{
- unsigned long addr;
- pte_t pte, *ptep;
+ unsigned long addr;
+ pte_t pte, *ptep;
unsigned long *page = (unsigned long *) init_level4_pgt;
addr = (unsigned long) page[pgd_index(va)];
@@ -89,22 +91,22 @@
static void __make_page_writable(unsigned long va)
{
- unsigned long addr;
- pte_t pte, *ptep;
- unsigned long *page = (unsigned long *) init_level4_pgt;
-
- addr = (unsigned long) page[pgd_index(va)];
- addr_to_page(addr, page);
-
- addr = page[pud_index(va)];
- addr_to_page(addr, page);
-
- addr = page[pmd_index(va)];
- addr_to_page(addr, page);
-
- ptep = (pte_t *) &page[pte_index(va)];
+ unsigned long addr;
+ pte_t pte, *ptep;
+ unsigned long *page = (unsigned long *) init_level4_pgt;
+
+ addr = (unsigned long) page[pgd_index(va)];
+ addr_to_page(addr, page);
+
+ addr = page[pud_index(va)];
+ addr_to_page(addr, page);
+
+ addr = page[pmd_index(va)];
+ addr_to_page(addr, page);
+
+ ptep = (pte_t *) &page[pte_index(va)];
pte.pte = (ptep->pte | _PAGE_RW);
- xen_l1_entry_update(ptep, pte);
+ xen_l1_entry_update(ptep, pte);
__flush_tlb_one(addr);
}
@@ -115,55 +117,55 @@
void make_page_readonly(void *va)
{
pgd_t* pgd; pud_t *pud; pmd_t* pmd; pte_t pte, *ptep;
- unsigned long addr = (unsigned long) va;
-
- if (!init_mapping_done) {
- __make_page_readonly(addr);
- return;
- }
-
- pgd = pgd_offset_k(addr);
- pud = pud_offset(pgd, addr);
- pmd = pmd_offset(pud, addr);
- ptep = pte_offset_kernel(pmd, addr);
+ unsigned long addr = (unsigned long) va;
+
+ if (!init_mapping_done) {
+ __make_page_readonly(addr);
+ return;
+ }
+
+ pgd = pgd_offset_k(addr);
+ pud = pud_offset(pgd, addr);
+ pmd = pmd_offset(pud, addr);
+ ptep = pte_offset_kernel(pmd, addr);
pte.pte = (ptep->pte & ~_PAGE_RW);
- xen_l1_entry_update(ptep, pte);
+ xen_l1_entry_update(ptep, pte);
__flush_tlb_one(addr);
}
void make_page_writable(void *va)
{
- pgd_t* pgd; pud_t *pud; pmd_t* pmd; pte_t pte, *ptep;
- unsigned long addr = (unsigned long) va;
-
- if (!init_mapping_done) {
- __make_page_writable(addr);
- return;
- }
-
- pgd = pgd_offset_k(addr);
- pud = pud_offset(pgd, addr);
- pmd = pmd_offset(pud, addr);
- ptep = pte_offset_kernel(pmd, addr);
+ pgd_t* pgd; pud_t *pud; pmd_t* pmd; pte_t pte, *ptep;
+ unsigned long addr = (unsigned long) va;
+
+ if (!init_mapping_done) {
+ __make_page_writable(addr);
+ return;
+ }
+
+ pgd = pgd_offset_k(addr);
+ pud = pud_offset(pgd, addr);
+ pmd = pmd_offset(pud, addr);
+ ptep = pte_offset_kernel(pmd, addr);
pte.pte = (ptep->pte | _PAGE_RW);
- xen_l1_entry_update(ptep, pte);
+ xen_l1_entry_update(ptep, pte);
__flush_tlb_one(addr);
}
void make_pages_readonly(void* va, unsigned nr)
{
- while ( nr-- != 0 ) {
- make_page_readonly(va);
- va = (void*)((unsigned long)va + PAGE_SIZE);
- }
+ while (nr-- != 0) {
+ make_page_readonly(va);
+ va = (void*)((unsigned long)va + PAGE_SIZE);
+ }
}
void make_pages_writable(void* va, unsigned nr)
{
- while ( nr-- != 0 ) {
- make_page_writable(va);
- va = (void*)((unsigned long)va + PAGE_SIZE);
- }
+ while (nr-- != 0) {
+ make_page_writable(va);
+ va = (void*)((unsigned long)va + PAGE_SIZE);
+ }
}
/*
@@ -389,7 +391,7 @@
set_pte_phys(address, phys, prot, SET_FIXMAP_USER);
}
-unsigned long __initdata table_start, table_end, tables_space;
+unsigned long __initdata table_start, tables_space;
unsigned long get_machine_pfn(unsigned long addr)
{
@@ -400,40 +402,15 @@
return pte_mfn(*pte);
}
-#define ALIGN_TO_4K __attribute__((section(".data.page_aligned")))
-#define MAX_LOW_PAGES 0x20
-static unsigned long __init_pgt[MAX_LOW_PAGES][512] ALIGN_TO_4K;
-static int __init_pgt_index;
-
-/*
- * We start using from start_pfn
- */
static __init void *alloc_static_page(unsigned long *phys)
{
- int i = __init_pgt_index++;
-
- if (__init_pgt_index >= MAX_LOW_PAGES) {
- printk("Need to increase MAX_LOW_PAGES");
- BUG();
- }
-
- *phys = __pa(__init_pgt[i]);
-
- return (void *) __init_pgt[i];
+ unsigned long va = (start_pfn << PAGE_SHIFT) + __START_KERNEL_map;
+ *phys = start_pfn << PAGE_SHIFT;
+ start_pfn++;
+ memset((void *)va, 0, PAGE_SIZE);
+ return (void *)va;
}
-/*
- * Get RO page
- */
-static void __init *alloc_low_page(unsigned long *phys)
-{
- unsigned long pfn = table_end++;
-
- *phys = (pfn << PAGE_SHIFT);
- memset((void *) ((pfn << PAGE_SHIFT) + __START_KERNEL_map), 0,
PAGE_SIZE);
- return (void *)((pfn << PAGE_SHIFT) + __START_KERNEL_map);
-}
-
#define PTE_SIZE PAGE_SIZE
static inline void __set_pte(pte_t *dst, pte_t val)
@@ -443,27 +420,21 @@
static inline int make_readonly(unsigned long paddr)
{
- int readonly = 0;
-
- /* Make new page tables read-only. */
- if ((paddr < ((table_start << PAGE_SHIFT) + tables_space)) &&
- (paddr >= (table_start << PAGE_SHIFT)))
- readonly = 1;
-
- /* Make old page tables read-only. */
- if ((paddr < ((xen_start_info.pt_base - __START_KERNEL_map) +
- (xen_start_info.nr_pt_frames << PAGE_SHIFT))) &&
- (paddr >= (xen_start_info.pt_base - __START_KERNEL_map)))
- readonly = 1;
-
- /*
- * No need for writable mapping of kernel image. This also ensures that
- * page and descriptor tables embedded inside don't have writable mappings.
- */
- if ((paddr >= __pa_symbol(&_text)) && (paddr < __pa_symbol(&_end)))
- readonly = 1;
-
- return readonly;
+ int readonly = 0;
+
+ /* Make old and new page tables read-only. */
+ if ((paddr >= (xen_start_info.pt_base - __START_KERNEL_map))
+ && (paddr < ((table_start << PAGE_SHIFT) + tables_space)))
+ readonly = 1;
+ /*
+ * No need for writable mapping of kernel image. This also ensures that
+ * page and descriptor tables embedded inside don't have writable
+ * mappings.
+ */
+ if ((paddr >= __pa_symbol(&_text)) && (paddr < __pa_symbol(&_end)))
+ readonly = 1;
+
+ return readonly;
}
static void __init phys_pud_init(pud_t *pud, unsigned long address, unsigned
long end)
@@ -485,7 +456,7 @@
break;
}
- pmd = alloc_low_page(&pmd_phys);
+ pmd = alloc_static_page(&pmd_phys);
make_page_readonly(pmd);
xen_pmd_pin(pmd_phys);
set_pud(pud, __pud(pmd_phys | _KERNPG_TABLE));
@@ -499,7 +470,7 @@
set_pmd(pmd, __pmd(0));
break;
}
- pte = alloc_low_page(&pte_phys);
+ pte = alloc_static_page(&pte_phys);
pte_save = pte;
for (k = 0; k < PTRS_PER_PTE; pte++, k++, paddr +=
PTE_SIZE) {
if ((paddr >= end) ||
@@ -526,15 +497,16 @@
static void __init find_early_table_space(unsigned long end)
{
- unsigned long puds, pmds, ptes;
+ unsigned long puds, pmds, ptes;
puds = (end + PUD_SIZE - 1) >> PUD_SHIFT;
pmds = (end + PMD_SIZE - 1) >> PMD_SHIFT;
- ptes = (end + PTE_SIZE - 1) >> PAGE_SHIFT;
-
- tables_space = round_up(puds * 8, PAGE_SIZE) +
- round_up(pmds * 8, PAGE_SIZE) +
- round_up(ptes * 8, PAGE_SIZE);
+ ptes = (end + PTE_SIZE - 1) >> PAGE_SHIFT;
+
+ tables_space =
+ round_up(puds * 8, PAGE_SIZE) +
+ round_up(pmds * 8, PAGE_SIZE) +
+ round_up(ptes * 8, PAGE_SIZE);
}
void __init xen_init_pt(void)
@@ -580,65 +552,58 @@
mk_kernel_pgd(__pa_symbol(level3_user_pgt)));
}
-/*
- * Extend kernel mapping to access pages for page tables. The initial
- * mapping done by Xen is minimal (e.g. 8MB) and we need to extend the
- * mapping for early initialization.
- */
-static unsigned long current_size, extended_size;
-
void __init extend_init_mapping(void)
{
unsigned long va = __START_KERNEL_map;
unsigned long phys, addr, *pte_page;
- pmd_t *pmd;
+ pmd_t *pmd;
pte_t *pte, new_pte;
- unsigned long *page = (unsigned long *) init_level4_pgt;
- int i;
+ unsigned long *page = (unsigned long *)init_level4_pgt;
addr = page[pgd_index(va)];
addr_to_page(addr, page);
addr = page[pud_index(va)];
addr_to_page(addr, page);
- for (;;) {
+ /* Kill mapping of low 1MB. */
+ while (va < (unsigned long)&_text) {
+ HYPERVISOR_update_va_mapping(va, __pte_ma(0), 0);
+ va += PAGE_SIZE;
+ }
+
+ /* Ensure init mappings cover kernel text/data and initial tables. */
+ while (va < (__START_KERNEL_map
+ + (start_pfn << PAGE_SHIFT)
+ + tables_space)) {
pmd = (pmd_t *)&page[pmd_index(va)];
- if (!pmd_present(*pmd))
- break;
- addr = page[pmd_index(va)];
- addr_to_page(addr, pte_page);
- for (i = 0; i < PTRS_PER_PTE; i++) {
- pte = (pte_t *) &pte_page[pte_index(va)];
- if (!pte_present(*pte))
- break;
- va += PAGE_SIZE;
- current_size += PAGE_SIZE;
+ if (pmd_none(*pmd)) {
+ pte_page = alloc_static_page(&phys);
+ make_page_readonly(pte_page);
+ xen_pte_pin(phys);
+ set_pmd(pmd, __pmd(phys | _KERNPG_TABLE | _PAGE_USER));
+ } else {
+ addr = page[pmd_index(va)];
+ addr_to_page(addr, pte_page);
}
- }
-
- while (va < __START_KERNEL_map + current_size + tables_space) {
- pmd = (pmd_t *) &page[pmd_index(va)];
- if (!pmd_none(*pmd))
- continue;
- pte_page = (unsigned long *) alloc_static_page(&phys);
- make_page_readonly(pte_page);
- xen_pte_pin(phys);
- set_pmd(pmd, __pmd(phys | _KERNPG_TABLE | _PAGE_USER));
- for (i = 0; i < PTRS_PER_PTE; i++, va += PAGE_SIZE) {
+ pte = (pte_t *)&pte_page[pte_index(va)];
+ if (pte_none(*pte)) {
new_pte = pfn_pte(
(va - __START_KERNEL_map) >> PAGE_SHIFT,
__pgprot(_KERNPG_TABLE | _PAGE_USER));
- pte = (pte_t *)&pte_page[pte_index(va)];
xen_l1_entry_update(pte, new_pte);
- extended_size += PAGE_SIZE;
}
- }
-
- /* Kill mapping of low 1MB. */
- for (va = __START_KERNEL_map; va < (unsigned long)&_text; va +=
PAGE_SIZE)
+ va += PAGE_SIZE;
+ }
+
+ /* Finally, blow away any spurious initial mappings. */
+ while (1) {
+ pmd = (pmd_t *)&page[pmd_index(va)];
+ if (pmd_none(*pmd))
+ break;
HYPERVISOR_update_va_mapping(va, __pte_ma(0), 0);
-}
-
+ va += PAGE_SIZE;
+ }
+}
/* Setup the direct mapping of the physical memory at PAGE_OFFSET.
This runs before bootmem is initialized and gets pages directly from the
@@ -651,34 +616,31 @@
find_early_table_space(end);
extend_init_mapping();
- start_pfn = current_size >> PAGE_SHIFT;
table_start = start_pfn;
- table_end = table_start;
start = (unsigned long)__va(start);
end = (unsigned long)__va(end);
for (; start < end; start = next) {
unsigned long pud_phys;
- pud_t *pud = alloc_low_page(&pud_phys);
- make_page_readonly(pud);
- xen_pud_pin(pud_phys);
+ pud_t *pud = alloc_static_page(&pud_phys);
+ make_page_readonly(pud);
+ xen_pud_pin(pud_phys);
next = start + PGDIR_SIZE;
if (next > end)
next = end;
phys_pud_init(pud, __pa(start), __pa(next));
set_pgd(pgd_offset_k(start), mk_kernel_pgd(pud_phys));
- }
-
- printk("kernel direct mapping tables upto %lx @ %lx-%lx\n", end,
- table_start<<PAGE_SHIFT,
- table_end<<PAGE_SHIFT);
-
- start_pfn = ((current_size + extended_size) >> PAGE_SHIFT);
+ }
+
+ printk("kernel direct mapping tables upto %lx @ %lx-%lx\n",
+ __pa(end), table_start<<PAGE_SHIFT, start_pfn<<PAGE_SHIFT);
+
+ BUG_ON(start_pfn != (table_start + (tables_space >> PAGE_SHIFT)));
__flush_tlb_all();
- init_mapping_done = 1;
+ init_mapping_done = 1;
}
extern struct x8664_pda cpu_pda[NR_CPUS];
@@ -1003,3 +965,13 @@
{
return (addr >= VSYSCALL_START) && (addr < VSYSCALL_END);
}
+
+/*
+ * Local variables:
+ * c-file-style: "linux"
+ * indent-tabs-mode: t
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
diff -r 9225c3f597db -r 1fc6473ecc01
linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_xs.c
--- a/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_xs.c Tue Aug 30
20:02:59 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_xs.c Tue Aug 30
20:03:51 2005
@@ -45,7 +45,9 @@
static char printf_buffer[4096];
static LIST_HEAD(watches);
+
DECLARE_MUTEX(xenbus_lock);
+EXPORT_SYMBOL(xenbus_lock);
static int get_error(const char *errorstring)
{
@@ -224,6 +226,7 @@
ret[(*num)++] = p;
return ret;
}
+EXPORT_SYMBOL(xenbus_directory);
/* Check if a path exists. Return 1 if it does. */
int xenbus_exists(const char *dir, const char *node)
@@ -237,6 +240,7 @@
kfree(d);
return 1;
}
+EXPORT_SYMBOL(xenbus_exists);
/* Get the value of a single file.
* Returns a kmalloced value: call free() on it after use.
@@ -277,18 +281,21 @@
return xs_error(xs_talkv(XS_WRITE, iovec, ARRAY_SIZE(iovec), NULL));
}
+EXPORT_SYMBOL(xenbus_write);
/* Create a new directory. */
int xenbus_mkdir(const char *dir, const char *node)
{
return xs_error(xs_single(XS_MKDIR, join(dir, node), NULL));
}
+EXPORT_SYMBOL(xenbus_mkdir);
/* Destroy a file or directory (directories must be empty). */
int xenbus_rm(const char *dir, const char *node)
{
return xs_error(xs_single(XS_RM, join(dir, node), NULL));
}
+EXPORT_SYMBOL(xenbus_rm);
/* Start a transaction: changes by others will not be seen during this
* transaction, and changes will not be visible to others until end.
diff -r 9225c3f597db -r 1fc6473ecc01 tools/misc/cpuperf/cpuperf.c
--- a/tools/misc/cpuperf/cpuperf.c Tue Aug 30 20:02:59 2005
+++ b/tools/misc/cpuperf/cpuperf.c Tue Aug 30 20:03:51 2005
@@ -243,16 +243,12 @@
}
if (read) {
- while((cpu_mask&1)) {
- int i;
- for (i=0x300;i<0x312;i++) {
- printf("%010llu ",cpus_rdmsr( cpu_mask, i ) );
- }
- printf("\n");
- cpu_mask>>=1;
- }
+ int i;
+ for (i=0x300;i<0x312;i++)
+ printf("%010llu ",cpus_rdmsr( cpu_mask, i ) );
+ printf("\n");
exit(1);
- }
+ }
if (!escr) {
fprintf(stderr, "Need an ESCR.\n");
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/domain.c
--- a/xen/arch/x86/domain.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/domain.c Tue Aug 30 20:03:51 2005
@@ -255,13 +255,13 @@
v->vcpu_info = &d->shared_info->vcpu_data[v->vcpu_id];
v->cpumap = CPUMAP_RUNANYWHERE;
SHARE_PFN_WITH_DOMAIN(virt_to_page(d->shared_info), d);
- machine_to_phys_mapping[virt_to_phys(d->shared_info) >>
- PAGE_SHIFT] = INVALID_M2P_ENTRY;
+ set_pfn_from_mfn(virt_to_phys(d->shared_info) >> PAGE_SHIFT,
+ INVALID_M2P_ENTRY);
d->arch.mm_perdomain_pt = alloc_xenheap_page();
memset(d->arch.mm_perdomain_pt, 0, PAGE_SIZE);
- machine_to_phys_mapping[virt_to_phys(d->arch.mm_perdomain_pt) >>
- PAGE_SHIFT] = INVALID_M2P_ENTRY;
+ set_pfn_from_mfn(virt_to_phys(d->arch.mm_perdomain_pt) >> PAGE_SHIFT,
+ INVALID_M2P_ENTRY);
v->arch.perdomain_ptes = d->arch.mm_perdomain_pt;
v->arch.perdomain_ptes[FIRST_RESERVED_GDT_PAGE] =
l1e_from_page(virt_to_page(gdt_table), PAGE_HYPERVISOR);
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/domain_build.c
--- a/xen/arch/x86/domain_build.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/domain_build.c Tue Aug 30 20:03:51 2005
@@ -592,8 +592,7 @@
if ( opt_dom0_translate )
{
si->shared_info = d->next_io_page << PAGE_SHIFT;
- set_machinetophys(virt_to_phys(d->shared_info) >> PAGE_SHIFT,
- d->next_io_page);
+ set_pfn_from_mfn(virt_to_phys(d->shared_info) >> PAGE_SHIFT,
d->next_io_page);
d->next_io_page++;
}
else
@@ -614,7 +613,7 @@
mfn = alloc_epfn - (pfn - REVERSE_START);
#endif
((u32 *)vphysmap_start)[pfn] = mfn;
- machine_to_phys_mapping[mfn] = pfn;
+ set_pfn_from_mfn(mfn, pfn);
}
while ( pfn < nr_pages )
{
@@ -627,7 +626,7 @@
#define pfn (nr_pages - 1 - (pfn - (alloc_epfn - alloc_spfn)))
#endif
((u32 *)vphysmap_start)[pfn] = mfn;
- machine_to_phys_mapping[mfn] = pfn;
+ set_pfn_from_mfn(mfn, pfn);
#undef pfn
page++; pfn++;
}
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/mm.c Tue Aug 30 20:03:51 2005
@@ -1452,7 +1452,7 @@
"!= exp %" PRtype_info ") "
"for mfn %lx (pfn %x)",
x, type, page_to_pfn(page),
- machine_to_phys_mapping[page_to_pfn(page)]);
+ get_pfn_from_mfn(page_to_pfn(page)));
return 0;
}
else if ( (x & PGT_va_mask) == PGT_va_mutable )
@@ -2206,7 +2206,7 @@
printk("privileged guest dom%d requests pfn=%lx to "
"map mfn=%lx for dom%d\n",
d->domain_id, gpfn, mfn, FOREIGNDOM->domain_id);
- set_machinetophys(mfn, gpfn);
+ set_pfn_from_mfn(mfn, gpfn);
set_p2m_entry(FOREIGNDOM, gpfn, mfn, &sh_mapcache, &mapcache);
okay = 1;
shadow_unlock(FOREIGNDOM);
@@ -2225,7 +2225,7 @@
break;
}
- set_machinetophys(mfn, gpfn);
+ set_pfn_from_mfn(mfn, gpfn);
okay = 1;
/*
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/shadow32.c
--- a/xen/arch/x86/shadow32.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/shadow32.c Tue Aug 30 20:03:51 2005
@@ -827,7 +827,7 @@
{
page = list_entry(list_ent, struct pfn_info, list);
mfn = page_to_pfn(page);
- pfn = machine_to_phys_mapping[mfn];
+ pfn = get_pfn_from_mfn(mfn);
ASSERT(pfn != INVALID_M2P_ENTRY);
ASSERT(pfn < (1u<<20));
@@ -841,7 +841,7 @@
{
page = list_entry(list_ent, struct pfn_info, list);
mfn = page_to_pfn(page);
- pfn = machine_to_phys_mapping[mfn];
+ pfn = get_pfn_from_mfn(mfn);
if ( (pfn != INVALID_M2P_ENTRY) &&
(pfn < (1u<<20)) )
{
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/shadow_public.c
--- a/xen/arch/x86/shadow_public.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/shadow_public.c Tue Aug 30 20:03:51 2005
@@ -1311,7 +1311,7 @@
{
page = list_entry(list_ent, struct pfn_info, list);
mfn = page_to_pfn(page);
- pfn = machine_to_phys_mapping[mfn];
+ pfn = get_pfn_from_mfn(mfn);
ASSERT(pfn != INVALID_M2P_ENTRY);
ASSERT(pfn < (1u<<20));
@@ -1325,7 +1325,7 @@
{
page = list_entry(list_ent, struct pfn_info, list);
mfn = page_to_pfn(page);
- pfn = machine_to_phys_mapping[mfn];
+ pfn = get_pfn_from_mfn(mfn);
if ( (pfn != INVALID_M2P_ENTRY) &&
(pfn < (1u<<20)) )
{
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/traps.c Tue Aug 30 20:03:51 2005
@@ -100,6 +100,7 @@
static int debug_stack_lines = 20;
integer_param("debug_stack_lines", debug_stack_lines);
+#define stack_words_per_line (32 / BYTES_PER_LONG)
int is_kernel_text(unsigned long addr)
{
@@ -125,7 +126,7 @@
printk("Guest stack trace from "__OP"sp=%p:\n ", stack);
- for ( i = 0; i < (debug_stack_lines*8); i++ )
+ for ( i = 0; i < (debug_stack_lines*stack_words_per_line); i++ )
{
if ( ((long)stack & (STACK_SIZE-1)) == 0 )
break;
@@ -137,7 +138,7 @@
i = 1;
break;
}
- if ( (i != 0) && ((i % 8) == 0) )
+ if ( (i != 0) && ((i % stack_words_per_line) == 0) )
printk("\n ");
printk("%p ", _p(addr));
stack++;
@@ -176,11 +177,11 @@
printk("Xen stack trace from "__OP"sp=%p:\n ", stack);
- for ( i = 0; i < (debug_stack_lines*8); i++ )
+ for ( i = 0; i < (debug_stack_lines*stack_words_per_line); i++ )
{
if ( ((long)stack & (STACK_SIZE-1)) == 0 )
break;
- if ( (i != 0) && ((i % 8) == 0) )
+ if ( (i != 0) && ((i % stack_words_per_line) == 0) )
printk("\n ");
addr = *stack++;
printk("%p ", _p(addr));
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/vmx.c
--- a/xen/arch/x86/vmx.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/vmx.c Tue Aug 30 20:03:51 2005
@@ -694,7 +694,7 @@
return 0;
}
- mfn = phys_to_machine_mapping(laddr >> PAGE_SHIFT);
+ mfn = get_mfn_from_pfn(laddr >> PAGE_SHIFT);
addr = (char *)map_domain_page(mfn) + (laddr & ~PAGE_MASK);
if (dir == COPY_IN)
@@ -795,7 +795,7 @@
* removed some translation or changed page attributes.
* We simply invalidate the shadow.
*/
- mfn = phys_to_machine_mapping(c->cr3 >> PAGE_SHIFT);
+ mfn = get_mfn_from_pfn(c->cr3 >> PAGE_SHIFT);
if (mfn != pagetable_get_pfn(d->arch.guest_table)) {
printk("Invalid CR3 value=%x", c->cr3);
domain_crash_synchronous();
@@ -813,7 +813,7 @@
domain_crash_synchronous();
return 0;
}
- mfn = phys_to_machine_mapping(c->cr3 >> PAGE_SHIFT);
+ mfn = get_mfn_from_pfn(c->cr3 >> PAGE_SHIFT);
d->arch.guest_table = mk_pagetable(mfn << PAGE_SHIFT);
update_pagetables(d);
/*
@@ -968,7 +968,7 @@
/*
* The guest CR3 must be pointing to the guest physical.
*/
- if ( !VALID_MFN(mfn = phys_to_machine_mapping(
+ if ( !VALID_MFN(mfn = get_mfn_from_pfn(
d->arch.arch_vmx.cpu_cr3 >> PAGE_SHIFT)) ||
!get_page(pfn_to_page(mfn), d->domain) )
{
@@ -1164,7 +1164,7 @@
* removed some translation or changed page attributes.
* We simply invalidate the shadow.
*/
- mfn = phys_to_machine_mapping(value >> PAGE_SHIFT);
+ mfn = get_mfn_from_pfn(value >> PAGE_SHIFT);
if (mfn != pagetable_get_pfn(d->arch.guest_table))
__vmx_bug(regs);
shadow_sync_all(d->domain);
@@ -1175,7 +1175,7 @@
*/
VMX_DBG_LOG(DBG_LEVEL_VMMU, "CR3 value = %lx", value);
if ( ((value >> PAGE_SHIFT) > d->domain->max_pages ) ||
- !VALID_MFN(mfn = phys_to_machine_mapping(value >>
PAGE_SHIFT)) ||
+ !VALID_MFN(mfn = get_mfn_from_pfn(value >> PAGE_SHIFT)) ||
!get_page(pfn_to_page(mfn), d->domain) )
{
printk("Invalid CR3 value=%lx", value);
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/vmx_platform.c
--- a/xen/arch/x86/vmx_platform.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/vmx_platform.c Tue Aug 30 20:03:51 2005
@@ -521,7 +521,7 @@
if ( vmx_paging_enabled(current) )
{
gpa = gva_to_gpa(guest_eip);
- mfn = phys_to_machine_mapping(gpa >> PAGE_SHIFT);
+ mfn = get_mfn_from_pfn(gpa >> PAGE_SHIFT);
/* Does this cross a page boundary ? */
if ( (guest_eip & PAGE_MASK) != ((guest_eip + inst_len) & PAGE_MASK) )
@@ -532,7 +532,7 @@
}
else
{
- mfn = phys_to_machine_mapping(guest_eip >> PAGE_SHIFT);
+ mfn = get_mfn_from_pfn(guest_eip >> PAGE_SHIFT);
}
inst_start = map_domain_page(mfn);
@@ -542,7 +542,7 @@
if ( remaining )
{
gpa = gva_to_gpa(guest_eip+inst_len+remaining);
- mfn = phys_to_machine_mapping(gpa >> PAGE_SHIFT);
+ mfn = get_mfn_from_pfn(gpa >> PAGE_SHIFT);
inst_start = map_domain_page(mfn);
memcpy((char *)buf+inst_len, inst_start, remaining);
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/vmx_vmcs.c
--- a/xen/arch/x86/vmx_vmcs.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/vmx_vmcs.c Tue Aug 30 20:03:51 2005
@@ -148,7 +148,7 @@
offset = (addr & ~PAGE_MASK);
addr = round_pgdown(addr);
- mpfn = phys_to_machine_mapping(addr >> PAGE_SHIFT);
+ mpfn = get_mfn_from_pfn(addr >> PAGE_SHIFT);
p = map_domain_page(mpfn);
e820p = (struct e820entry *) ((unsigned long) p + offset);
@@ -175,7 +175,7 @@
unmap_domain_page(p);
/* Initialise shared page */
- mpfn = phys_to_machine_mapping(gpfn);
+ mpfn = get_mfn_from_pfn(gpfn);
p = map_domain_page(mpfn);
d->domain->arch.vmx_platform.shared_page_va = (unsigned long)p;
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/x86_64/entry.S
--- a/xen/arch/x86/x86_64/entry.S Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/x86_64/entry.S Tue Aug 30 20:03:51 2005
@@ -339,7 +339,8 @@
1: /* In kernel context already: push new frame at existing %rsp. */
movq UREGS_rsp+8(%rsp),%rsi
andb $0xfc,UREGS_cs+8(%rsp) # Indicate kernel context to guest.
-2: movq $HYPERVISOR_VIRT_START,%rax
+2: andq $~0xf,%rsi # Stack frames are 16-byte aligned.
+ movq $HYPERVISOR_VIRT_START,%rax
cmpq %rax,%rsi
jb 1f # In +ve address space? Then okay.
movq $HYPERVISOR_VIRT_END+60,%rax
diff -r 9225c3f597db -r 1fc6473ecc01 xen/arch/x86/x86_64/traps.c
--- a/xen/arch/x86/x86_64/traps.c Tue Aug 30 20:02:59 2005
+++ b/xen/arch/x86/x86_64/traps.c Tue Aug 30 20:03:51 2005
@@ -15,19 +15,22 @@
void show_registers(struct cpu_user_regs *regs)
{
- printk("CPU: %d\nEIP: %04x:[<%016lx>]",
+ printk("CPU: %d\nRIP: %04x:[<%016lx>]",
smp_processor_id(), 0xffff & regs->cs, regs->rip);
if ( !GUEST_MODE(regs) )
print_symbol(" %s", regs->rip);
- printk("\nEFLAGS: %016lx\n", regs->eflags);
- printk("rax: %016lx rbx: %016lx rcx: %016lx rdx: %016lx\n",
- regs->rax, regs->rbx, regs->rcx, regs->rdx);
- printk("rsi: %016lx rdi: %016lx rbp: %016lx rsp: %016lx\n",
- regs->rsi, regs->rdi, regs->rbp, regs->rsp);
- printk("r8: %016lx r9: %016lx r10: %016lx r11: %016lx\n",
- regs->r8, regs->r9, regs->r10, regs->r11);
- printk("r12: %016lx r13: %016lx r14: %016lx r15: %016lx\n",
- regs->r12, regs->r13, regs->r14, regs->r15);
+ printk("\nRFLAGS: %016lx\n", regs->eflags);
+ printk("rax: %016lx rbx: %016lx rcx: %016lx\n",
+ regs->rax, regs->rbx, regs->rcx);
+ printk("rdx: %016lx rsi: %016lx rdi: %016lx\n",
+ regs->rdx, regs->rsi, regs->rdi);
+ printk("rbp: %016lx rsp: %016lx r8: %016lx\n",
+ regs->rbp, regs->rsp, regs->r8);
+ printk("r9: %016lx r10: %016lx r11: %016lx\n",
+ regs->r9, regs->r10, regs->r11);
+ printk("r12: %016lx r13: %016lx r14: %016lx\n",
+ regs->r12, regs->r13, regs->r14);
+ printk("r15: %016lx\n", regs->r15);
if ( GUEST_MODE(regs) )
show_guest_stack();
diff -r 9225c3f597db -r 1fc6473ecc01 xen/common/grant_table.c
--- a/xen/common/grant_table.c Tue Aug 30 20:02:59 2005
+++ b/xen/common/grant_table.c Tue Aug 30 20:03:51 2005
@@ -1211,13 +1211,13 @@
DPRINTK("Bad pfn (%lx)\n", pfn);
else
{
- machine_to_phys_mapping[frame] = pfn;
+ set_pfn_from_mfn(frame, pfn);
if ( unlikely(shadow_mode_log_dirty(ld)))
mark_dirty(ld, frame);
if (shadow_mode_translate(ld))
- __phys_to_machine_mapping[pfn] = frame;
+ set_mfn_from_pfn(pfn, frame);
}
sha->frame = __mfn_to_gpfn(rd, frame);
sha->domid = rd->domain_id;
@@ -1268,8 +1268,7 @@
{
SHARE_PFN_WITH_DOMAIN(
virt_to_page((char *)(t->shared)+(i*PAGE_SIZE)), d);
- machine_to_phys_mapping[(virt_to_phys(t->shared) >> PAGE_SHIFT) + i] =
- INVALID_M2P_ENTRY;
+ set_pfn_from_mfn((virt_to_phys(t->shared) >> PAGE_SHIFT) + i,
INVALID_M2P_ENTRY);
}
/* Okay, install the structure. */
diff -r 9225c3f597db -r 1fc6473ecc01 xen/include/asm-ia64/mm.h
--- a/xen/include/asm-ia64/mm.h Tue Aug 30 20:02:59 2005
+++ b/xen/include/asm-ia64/mm.h Tue Aug 30 20:03:51 2005
@@ -405,7 +405,7 @@
/* If pmt table is provided by control pannel later, we need __get_user
* here. However if it's allocated by HV, we should access it directly
*/
-#define phys_to_machine_mapping(d, gpfn) \
+#define get_mfn_from_pfn(d, gpfn) \
((d) == dom0 ? gpfn : \
(gpfn <= d->arch.max_pfn ? (d)->arch.pmt[(gpfn)] : \
INVALID_MFN))
@@ -414,7 +414,7 @@
machine_to_phys_mapping[(mfn)]
#define __gpfn_to_mfn(_d, gpfn) \
- phys_to_machine_mapping((_d), (gpfn))
+ get_mfn_from_pfn((_d), (gpfn))
#define __gpfn_invalid(_d, gpfn) \
(__gpfn_to_mfn((_d), (gpfn)) & GPFN_INV_MASK)
diff -r 9225c3f597db -r 1fc6473ecc01 xen/include/asm-x86/mm.h
--- a/xen/include/asm-x86/mm.h Tue Aug 30 20:02:59 2005
+++ b/xen/include/asm-x86/mm.h Tue Aug 30 20:03:51 2005
@@ -255,10 +255,13 @@
* contiguous (or near contiguous) physical memory.
*/
#undef machine_to_phys_mapping
-#define machine_to_phys_mapping ((u32 *)RDWR_MPT_VIRT_START)
+#define machine_to_phys_mapping ((u32 *)RDWR_MPT_VIRT_START)
#define INVALID_M2P_ENTRY (~0U)
#define VALID_M2P(_e) (!((_e) & (1U<<31)))
#define IS_INVALID_M2P_ENTRY(_e) (!VALID_M2P(_e))
+
+#define set_pfn_from_mfn(mfn, pfn) (machine_to_phys_mapping[(mfn)] = (pfn))
+#define get_pfn_from_mfn(mfn) (machine_to_phys_mapping[(mfn)])
/*
* The phys_to_machine_mapping is the reversed mapping of MPT for full
@@ -266,17 +269,17 @@
* guests, so we steal the address space that would have normally
* been used by the read-only MPT map.
*/
-#define __phys_to_machine_mapping ((unsigned long *)RO_MPT_VIRT_START)
-#define INVALID_MFN (~0UL)
-#define VALID_MFN(_mfn) (!((_mfn) & (1U<<31)))
-
-/* Returns the machine physical */
-static inline unsigned long phys_to_machine_mapping(unsigned long pfn)
+#define phys_to_machine_mapping ((unsigned long *)RO_MPT_VIRT_START)
+#define INVALID_MFN (~0UL)
+#define VALID_MFN(_mfn) (!((_mfn) & (1U<<31)))
+
+#define set_mfn_from_pfn(pfn, mfn) (phys_to_machine_mapping[(pfn)] = (mfn))
+static inline unsigned long get_mfn_from_pfn(unsigned long pfn)
{
unsigned long mfn;
l1_pgentry_t pte;
- if ( (__copy_from_user(&pte, &__phys_to_machine_mapping[pfn],
+ if ( (__copy_from_user(&pte, &phys_to_machine_mapping[pfn],
sizeof(pte)) == 0) &&
(l1e_get_flags(pte) & _PAGE_PRESENT) )
mfn = l1e_get_pfn(pte);
@@ -285,7 +288,6 @@
return mfn;
}
-#define set_machinetophys(_mfn, _pfn) machine_to_phys_mapping[(_mfn)] = (_pfn)
#ifdef MEMORY_GUARD
void memguard_init(void);
diff -r 9225c3f597db -r 1fc6473ecc01 xen/include/asm-x86/shadow.h
--- a/xen/include/asm-x86/shadow.h Tue Aug 30 20:02:59 2005
+++ b/xen/include/asm-x86/shadow.h Tue Aug 30 20:03:51 2005
@@ -269,14 +269,14 @@
#define __mfn_to_gpfn(_d, mfn) \
( (shadow_mode_translate(_d)) \
- ? machine_to_phys_mapping[(mfn)] \
+ ? get_pfn_from_mfn(mfn) \
: (mfn) )
#define __gpfn_to_mfn(_d, gpfn) \
({ \
ASSERT(current->domain == (_d)); \
(shadow_mode_translate(_d)) \
- ? phys_to_machine_mapping(gpfn) \
+ ? get_mfn_from_pfn(gpfn) \
: (gpfn); \
})
@@ -461,7 +461,7 @@
// This wants the nice compact set of PFNs from 0..domain's max,
// which __mfn_to_gpfn() only returns for translated domains.
//
- pfn = machine_to_phys_mapping[mfn];
+ pfn = get_pfn_from_mfn(mfn);
/*
* Values with the MSB set denote MFNs that aren't really part of the
@@ -562,7 +562,7 @@
old_hl2e = v->arch.hl2_vtable[index];
if ( (l2e_get_flags(gl2e) & _PAGE_PRESENT) &&
- VALID_MFN(mfn = phys_to_machine_mapping(l2e_get_pfn(gl2e))) )
+ VALID_MFN(mfn = get_mfn_from_pfn(l2e_get_pfn(gl2e))) )
new_hl2e = l1e_from_pfn(mfn, __PAGE_HYPERVISOR);
else
new_hl2e = l1e_empty();
diff -r 9225c3f597db -r 1fc6473ecc01 xen/include/asm-x86/shadow_64.h
--- a/xen/include/asm-x86/shadow_64.h Tue Aug 30 20:02:59 2005
+++ b/xen/include/asm-x86/shadow_64.h Tue Aug 30 20:03:51 2005
@@ -138,7 +138,7 @@
return NULL;
mfn = entry_get_value(*le_e) >> PAGE_SHIFT;
if ((flag & GUEST_ENTRY) && shadow_mode_translate(d))
- mfn = phys_to_machine_mapping(mfn);
+ mfn = get_mfn_from_pfn(mfn);
le_p = (pgentry_64_t *)phys_to_virt(mfn << PAGE_SHIFT);
index = table_offset_64(va, (level + i - 1));
le_e = &le_p[index];
@@ -257,7 +257,7 @@
if (unlikely(!(l2e_get_flags_32(gl2e) & _PAGE_PRESENT)))
return NULL;
- l1mfn = phys_to_machine_mapping(
+ l1mfn = get_mfn_from_pfn(
l2e_get_pfn(gl2e));
l1va = (l1_pgentry_32_t *)
@@ -299,7 +299,7 @@
return NULL;
- l1mfn = phys_to_machine_mapping(
+ l1mfn = get_mfn_from_pfn(
l2e_get_pfn(gl2e));
l1va = (l1_pgentry_32_t *) phys_to_virt(
l1mfn << L1_PAGETABLE_SHIFT);
diff -r 9225c3f597db -r 1fc6473ecc01 xen/include/asm-x86/vmx_platform.h
--- a/xen/include/asm-x86/vmx_platform.h Tue Aug 30 20:02:59 2005
+++ b/xen/include/asm-x86/vmx_platform.h Tue Aug 30 20:03:51 2005
@@ -91,6 +91,6 @@
extern void vmx_io_assist(struct vcpu *v);
// XXX - think about this -- maybe use bit 30 of the mfn to signify an MMIO
frame.
-#define mmio_space(gpa) (!VALID_MFN(phys_to_machine_mapping((gpa) >>
PAGE_SHIFT)))
+#define mmio_space(gpa) (!VALID_MFN(get_mfn_from_pfn((gpa) >> PAGE_SHIFT)))
#endif
diff -r 9225c3f597db -r 1fc6473ecc01 xen/include/xen/perfc.h
--- a/xen/include/xen/perfc.h Tue Aug 30 20:02:59 2005
+++ b/xen/include/xen/perfc.h Tue Aug 30 20:03:51 2005
@@ -4,6 +4,7 @@
#ifdef PERF_COUNTERS
+#include <xen/lib.h>
#include <asm/atomic.h>
/*
@@ -87,7 +88,7 @@
* Histogram: special treatment for 0 and 1 count. After that equally spaced
* with last bucket taking the rest.
*/
-#ifdef PERFC_ARRAYS
+#ifdef PERF_ARRAYS
#define perfc_incr_histo(_x,_v,_n) \
do { \
if ( (_v) == 0 ) \
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