Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/kvm: Remove problematic BUILD_BUG_ON statement
powerpc/pci: Fix regression in powerpc MSI-X
powerpc: Avoid giving out RTC dates below EPOCH
powerpc/mm: Remove debug context clamping from nohash code
powerpc: Cleanup Kconfig selection of hugetlbfs support
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 10a0a54..2ba14e7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -414,6 +414,10 @@
config ARCH_POPULATES_NODE_MAP
def_bool y
+config SYS_SUPPORTS_HUGETLBFS
+ def_bool y
+ depends on PPC_BOOK3S_64
+
source "mm/Kconfig"
config ARCH_MEMORY_PROBE
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 92dc844..a136a11c490 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -777,7 +777,7 @@
return ppc_md.set_rtc_time(&tm);
}
-void read_persistent_clock(struct timespec *ts)
+static void __read_persistent_clock(struct timespec *ts)
{
struct rtc_time tm;
static int first = 1;
@@ -800,10 +800,23 @@
return;
}
ppc_md.get_rtc_time(&tm);
+
ts->tv_sec = mktime(tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday,
tm.tm_hour, tm.tm_min, tm.tm_sec);
}
+void read_persistent_clock(struct timespec *ts)
+{
+ __read_persistent_clock(ts);
+
+ /* Sanitize it in case real time clock is set below EPOCH */
+ if (ts->tv_sec < 0) {
+ ts->tv_sec = 0;
+ ts->tv_nsec = 0;
+ }
+
+}
+
/* clocksource code */
static cycle_t rtc_read(struct clocksource *cs)
{
diff --git a/arch/powerpc/kvm/timing.h b/arch/powerpc/kvm/timing.h
index bb13b1f..806ef67 100644
--- a/arch/powerpc/kvm/timing.h
+++ b/arch/powerpc/kvm/timing.h
@@ -48,7 +48,11 @@
static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type)
{
/* type has to be known at build time for optimization */
+
+ /* The BUILD_BUG_ON below breaks in funny ways, commented out
+ * for now ... -BenH
BUILD_BUG_ON(__builtin_constant_p(type));
+ */
switch (type) {
case EXT_INTR_EXITS:
vcpu->stat.ext_intr_exits++;
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
index c2f93dc..be4f34c 100644
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -25,8 +25,8 @@
* also clear mm->cpu_vm_mask bits when processes are migrated
*/
-#define DEBUG_MAP_CONSISTENCY
-#define DEBUG_CLAMP_LAST_CONTEXT 31
+//#define DEBUG_MAP_CONSISTENCY
+//#define DEBUG_CLAMP_LAST_CONTEXT 31
//#define DEBUG_HARDER
/* We don't use DEBUG because it tends to be compiled in always nowadays
diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index bf2e1ac..1164c34 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -432,8 +432,6 @@
/* Read config space back so we can restore after reset */
read_msi_msg(virq, &msg);
entry->msg = msg;
-
- unmask_msi_irq(virq);
}
return 0;
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 419f8a6..b9bf0ee 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -18,6 +18,7 @@
#include <linux/init.h>
#include <linux/radix-tree.h>
#include <linux/cpu.h>
+#include <linux/msi.h>
#include <linux/of.h>
#include <asm/firmware.h>
@@ -219,6 +220,14 @@
static unsigned int xics_startup(unsigned int virq)
{
+ /*
+ * The generic MSI code returns with the interrupt disabled on the
+ * card, using the MSI mask bits. Firmware doesn't appear to unmask
+ * at that level, so we do it here by hand.
+ */
+ if (irq_to_desc(virq)->msi_desc)
+ unmask_msi_irq(virq);
+
/* unmask it */
xics_unmask_irq(virq);
return 0;
diff --git a/fs/Kconfig b/fs/Kconfig
index 2126078..64d44ef 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -135,7 +135,7 @@
config HUGETLBFS
bool "HugeTLB file system support"
- depends on X86 || IA64 || PPC_BOOK3S_64 || SPARC64 || (S390 && 64BIT) || \
+ depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
SYS_SUPPORTS_HUGETLBFS || BROKEN
help
hugetlbfs is a filesystem backing for HugeTLB pages, based on