Author: adrian
Date: Thu Oct 9 05:34:28 2014
New Revision: 272800
URL: https://svnweb.freebsd.org/changeset/base/272800
Log:
Missing from previous commit - keep the VM domain -> PXM mapping
array and use it to map PXM -> VM domain when needed.
Differential Revision: D906
Reviewed by: jhb
Modified:
head/sys/x86/acpica/srat.c
Modified: head/sys/x86/acpica/srat.c
==============================================================================
--- head/sys/x86/acpica/srat.c Thu Oct 9 05:33:25 2014 (r272799)
+++ head/sys/x86/acpica/srat.c Thu Oct 9 05:34:28 2014 (r272800)
@@ -62,6 +62,8 @@ int num_mem;
static ACPI_TABLE_SRAT *srat;
static vm_paddr_t srat_physaddr;
+static int vm_domains[VM_PHYSSEG_MAX];
+
static void srat_walk_table(acpi_subtable_handler *handler, void *arg);
/*
@@ -247,7 +249,6 @@ check_phys_avail(void)
static int
renumber_domains(void)
{
- int domains[VM_PHYSSEG_MAX];
int i, j, slot;
/* Enumerate all the domains. */
@@ -255,17 +256,17 @@ renumber_domains(void)
for (i = 0; i < num_mem; i++) {
/* See if this domain is already known. */
for (j = 0; j < vm_ndomains; j++) {
- if (domains[j] >= mem_info[i].domain)
+ if (vm_domains[j] >= mem_info[i].domain)
break;
}
- if (j < vm_ndomains && domains[j] == mem_info[i].domain)
+ if (j < vm_ndomains && vm_domains[j] == mem_info[i].domain)
continue;
/* Insert the new domain at slot 'j'. */
slot = j;
for (j = vm_ndomains; j > slot; j--)
- domains[j] = domains[j - 1];
- domains[slot] = mem_info[i].domain;
+ vm_domains[j] = vm_domains[j - 1];
+ vm_domains[slot] = mem_info[i].domain;
vm_ndomains++;
if (vm_ndomains > MAXMEMDOM) {
vm_ndomains = 1;
@@ -280,15 +281,15 @@ renumber_domains(void)
* If the domain is already the right value, no need
* to renumber.
*/
- if (domains[i] == i)
+ if (vm_domains[i] == i)
continue;
/* Walk the cpu[] and mem_info[] arrays to renumber. */
for (j = 0; j < num_mem; j++)
- if (mem_info[j].domain == domains[i])
+ if (mem_info[j].domain == vm_domains[i])
mem_info[j].domain = i;
for (j = 0; j <= MAX_APIC_ID; j++)
- if (cpus[j].enabled && cpus[j].domain == domains[i])
+ if (cpus[j].enabled && cpus[j].domain == vm_domains[i])
cpus[j].domain = i;
}
KASSERT(vm_ndomains > 0,
@@ -368,4 +369,23 @@ srat_set_cpus(void *dummy)
}
}
SYSINIT(srat_set_cpus, SI_SUB_CPU, SI_ORDER_ANY, srat_set_cpus, NULL);
+
+/*
+ * Map a _PXM value to a VM domain ID.
+ *
+ * Returns the domain ID, or -1 if no domain ID was found.
+ */
+int
+acpi_map_pxm_to_vm_domainid(int pxm)
+{
+ int i;
+
+ for (i = 0; i < vm_ndomains; i++) {
+ if (vm_domains[i] == pxm)
+ return (i);
+ }
+
+ return (-1);
+}
+
#endif /* MAXMEMDOM > 1 */
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