Merge branch 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/setup: Fix for incorrect xen_extra_mem_start.
xen: When calling power_off, don't call the halt function.
xen: Fix compile warning when CONFIG_SMP is not defined.
xen: support CONFIG_MAXSMP
xen: partially revert "xen: set max_pfn_mapped to the last pfn mapped"
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index dd7b88f..5525163 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1033,6 +1033,13 @@
xen_reboot(SHUTDOWN_poweroff);
}
+static void xen_machine_power_off(void)
+{
+ if (pm_power_off)
+ pm_power_off();
+ xen_reboot(SHUTDOWN_poweroff);
+}
+
static void xen_crash_shutdown(struct pt_regs *regs)
{
xen_reboot(SHUTDOWN_crash);
@@ -1058,7 +1065,7 @@
static const struct machine_ops xen_machine_ops __initconst = {
.restart = xen_restart,
.halt = xen_machine_halt,
- .power_off = xen_machine_halt,
+ .power_off = xen_machine_power_off,
.shutdown = xen_machine_halt,
.crash_shutdown = xen_crash_shutdown,
.emergency_restart = xen_emergency_restart,
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index dc708dc..673e968 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -59,6 +59,7 @@
#include <asm/page.h>
#include <asm/init.h>
#include <asm/pat.h>
+#include <asm/smp.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
@@ -1231,7 +1232,7 @@
{
struct {
struct mmuext_op op;
- DECLARE_BITMAP(mask, NR_CPUS);
+ DECLARE_BITMAP(mask, num_processors);
} *args;
struct multicall_space mcs;
@@ -1599,6 +1600,11 @@
for (pteidx = 0; pteidx < PTRS_PER_PTE; pteidx++, pfn++) {
pte_t pte;
+#ifdef CONFIG_X86_32
+ if (pfn > max_pfn_mapped)
+ max_pfn_mapped = pfn;
+#endif
+
if (!pte_none(pte_page[pteidx]))
continue;
@@ -1766,7 +1772,9 @@
initial_kernel_pmd =
extend_brk(sizeof(pmd_t) * PTRS_PER_PMD, PAGE_SIZE);
- max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->mfn_list));
+ max_pfn_mapped = PFN_DOWN(__pa(xen_start_info->pt_base) +
+ xen_start_info->nr_pt_frames * PAGE_SIZE +
+ 512*1024);
kernel_pmd = m2v(pgd[KERNEL_PGD_BOUNDARY].pgd);
memcpy(initial_kernel_pmd, kernel_pmd, sizeof(pmd_t) * PTRS_PER_PMD);
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index be1a464..60aeeb56 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -227,11 +227,7 @@
memcpy(map_raw, map, sizeof(map));
e820.nr_map = 0;
-#ifdef CONFIG_X86_32
xen_extra_mem_start = mem_end;
-#else
- xen_extra_mem_start = max((1ULL << 32), mem_end);
-#endif
for (i = 0; i < memmap.nr_entries; i++) {
unsigned long long end;
@@ -266,6 +262,12 @@
if (map[i].size > 0)
e820_add_region(map[i].addr, map[i].size, map[i].type);
}
+ /* Align the balloon area so that max_low_pfn does not get set
+ * to be at the _end_ of the PCI gap at the far end (fee01000).
+ * Note that xen_extra_mem_start gets set in the loop above to be
+ * past the last E820 region. */
+ if (xen_initial_domain() && (xen_extra_mem_start < (1ULL<<32)))
+ xen_extra_mem_start = (1ULL<<32);
/*
* In domU, the ISA region is normal, usable memory, but we
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 41038c0..b4533a8 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -205,11 +205,18 @@
static void __init xen_smp_prepare_cpus(unsigned int max_cpus)
{
unsigned cpu;
+ unsigned int i;
xen_init_lock_cpu(0);
smp_store_cpu_info(0);
cpu_data(0).x86_max_cores = 1;
+
+ for_each_possible_cpu(i) {
+ zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
+ zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);
+ zalloc_cpumask_var(&per_cpu(cpu_llc_shared_map, i), GFP_KERNEL);
+ }
set_cpu_sibling_map(0);
if (xen_smp_intr_init(0))
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 553da68..30df85d 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -395,9 +395,9 @@
static void xen_irq_init(unsigned irq)
{
struct irq_info *info;
+#ifdef CONFIG_SMP
struct irq_desc *desc = irq_to_desc(irq);
-#ifdef CONFIG_SMP
/* By default all event channels notify CPU#0. */
cpumask_copy(desc->irq_data.affinity, cpumask_of(0));
#endif
