[GIT pull] x86 updates for 4.9

From: Thomas Gleixner
Date: Sat Oct 08 2016 - 10:03:57 EST

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Linus,

please pull the latest x86-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-urgent-for-linus

A pile of regression fixes and updates:

- Address the fallout of the patches which made the cpuid - nodeid
relation permanent: Handling of invalid APIC ids and preventing
pointless warning messages.

- Force eager FPU when protection keys are enabled. Protection keys are
not generating FPU exceptions so they cannot work with the lazy FPU
mechanism.

- Prevent force migration of interrupts which are not part of the CPU
vector domain.

- Handle the fact that APIC ids are not updated in the ACPI/MADT tables
on physical CPU hotplug

- Remove bash-isms from syscall table generator script

- Use the hypervisor supplied APIC frequency when running on VMware

Thanks,

tglx

------------------>
Dave Hansen (1):
x86/pkeys: Make protection keys an "eager" feature

Josh Poimboeuf (1):
x86/unwind: Fix oprofile module link error

Mika Westerberg (1):
x86/irq: Prevent force migration of irqs which are not in the vector domain

Prarit Bhargava (1):
arch/x86: Handle non enumerated CPU after physical hotplug

Renat Valiullin (1):
x86/vmware: Skip lapic calibration on VMware

Thomas Gleixner (2):
x86/acpi: Prevent LAPIC id 0xff from being accounted
x86/apic: Prevent pointless warning messages

sylvain.bertrand@xxxxxxxxx (1):
x86/syscalls: Remove bash-isms in syscall table generator

arch/x86/entry/syscalls/syscalltbl.sh | 15 +++++++++------
arch/x86/include/asm/fpu/xstate.h | 7 ++++---
arch/x86/include/asm/unwind.h | 14 ++------------
arch/x86/kernel/acpi/boot.c | 4 ++++
arch/x86/kernel/apic/apic.c | 8 +++++---
arch/x86/kernel/apic/vector.c | 23 ++++++++++++++++++++---
arch/x86/kernel/cpu/vmware.c | 12 ++++++++++--
arch/x86/kernel/smpboot.c | 18 +++++++++++++++---
arch/x86/kernel/unwind_guess.c | 10 ++++++++++
9 files changed, 79 insertions(+), 32 deletions(-)

diff --git a/arch/x86/entry/syscalls/syscalltbl.sh b/arch/x86/entry/syscalls/syscalltbl.sh
index cd3d3015d7df..751d1f992630 100644
--- a/arch/x86/entry/syscalls/syscalltbl.sh
+++ b/arch/x86/entry/syscalls/syscalltbl.sh
@@ -10,8 +10,11 @@ syscall_macro() {

# Entry can be either just a function name or "function/qualifier"
real_entry="${entry%%/*}"
- qualifier="${entry:${#real_entry}}" # Strip the function name
- qualifier="${qualifier:1}" # Strip the slash, if any
+ if [ "$entry" = "$real_entry" ]; then
+ qualifier=
+ else
+ qualifier=${entry#*/}
+ fi

echo "__SYSCALL_${abi}($nr, $real_entry, $qualifier)"
}
@@ -22,7 +25,7 @@ emit() {
entry="$3"
compat="$4"

- if [ "$abi" == "64" -a -n "$compat" ]; then
+ if [ "$abi" = "64" -a -n "$compat" ]; then
echo "a compat entry for a 64-bit syscall makes no sense" >&2
exit 1
fi
@@ -45,17 +48,17 @@ emit() {
grep '^[0-9]' "$in" | sort -n | (
while read nr abi name entry compat; do
abi=`echo "$abi" | tr '[a-z]' '[A-Z]'`
- if [ "$abi" == "COMMON" -o "$abi" == "64" ]; then
+ if [ "$abi" = "COMMON" -o "$abi" = "64" ]; then
# COMMON is the same as 64, except that we don't expect X32
# programs to use it. Our expectation has nothing to do with
# any generated code, so treat them the same.
emit 64 "$nr" "$entry" "$compat"
- elif [ "$abi" == "X32" ]; then
+ elif [ "$abi" = "X32" ]; then
# X32 is equivalent to 64 on an X32-compatible kernel.
echo "#ifdef CONFIG_X86_X32_ABI"
emit 64 "$nr" "$entry" "$compat"
echo "#endif"
- elif [ "$abi" == "I386" ]; then
+ elif [ "$abi" = "I386" ]; then
emit "$abi" "$nr" "$entry" "$compat"
else
echo "Unknown abi $abi" >&2
diff --git a/arch/x86/include/asm/fpu/xstate.h b/arch/x86/include/asm/fpu/xstate.h
index d4957ac72b48..430bacf73074 100644
--- a/arch/x86/include/asm/fpu/xstate.h
+++ b/arch/x86/include/asm/fpu/xstate.h
@@ -27,11 +27,12 @@
XFEATURE_MASK_YMM | \
XFEATURE_MASK_OPMASK | \
XFEATURE_MASK_ZMM_Hi256 | \
- XFEATURE_MASK_Hi16_ZMM | \
- XFEATURE_MASK_PKRU)
+ XFEATURE_MASK_Hi16_ZMM)

/* Supported features which require eager state saving */
-#define XFEATURE_MASK_EAGER (XFEATURE_MASK_BNDREGS | XFEATURE_MASK_BNDCSR)
+#define XFEATURE_MASK_EAGER (XFEATURE_MASK_BNDREGS | \
+ XFEATURE_MASK_BNDCSR | \
+ XFEATURE_MASK_PKRU)

/* All currently supported features */
#define XCNTXT_MASK (XFEATURE_MASK_LAZY | XFEATURE_MASK_EAGER)
diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h
index c4b6d1cafa46..46de9ac4b990 100644
--- a/arch/x86/include/asm/unwind.h
+++ b/arch/x86/include/asm/unwind.h
@@ -23,6 +23,8 @@ void __unwind_start(struct unwind_state *state, struct task_struct *task,

bool unwind_next_frame(struct unwind_state *state);

+unsigned long unwind_get_return_address(struct unwind_state *state);
+
static inline bool unwind_done(struct unwind_state *state)
{
return state->stack_info.type == STACK_TYPE_UNKNOWN;
@@ -48,8 +50,6 @@ unsigned long *unwind_get_return_address_ptr(struct unwind_state *state)
return state->bp + 1;
}

-unsigned long unwind_get_return_address(struct unwind_state *state);
-
#else /* !CONFIG_FRAME_POINTER */

static inline
@@ -58,16 +58,6 @@ unsigned long *unwind_get_return_address_ptr(struct unwind_state *state)
return NULL;
}

-static inline
-unsigned long unwind_get_return_address(struct unwind_state *state)
-{
- if (unwind_done(state))
- return 0;
-
- return ftrace_graph_ret_addr(state->task, &state->graph_idx,
- *state->sp, state->sp);
-}
-
#endif /* CONFIG_FRAME_POINTER */

#endif /* _ASM_X86_UNWIND_H */
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 32a7d70913ac..8a5abaa7d453 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -233,6 +233,10 @@ acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)

acpi_table_print_madt_entry(header);

+ /* Ignore invalid ID */
+ if (processor->id == 0xff)
+ return 0;
+
/*
* We need to register disabled CPU as well to permit
* counting disabled CPUs. This allows us to size
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index f266b8a92a9e..88c657b057e2 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2128,9 +2128,11 @@ int __generic_processor_info(int apicid, int version, bool enabled)
if (num_processors >= nr_cpu_ids) {
int thiscpu = max + disabled_cpus;

- pr_warning(
- "APIC: NR_CPUS/possible_cpus limit of %i reached."
- " Processor %d/0x%x ignored.\n", max, thiscpu, apicid);
+ if (enabled) {
+ pr_warning("APIC: NR_CPUS/possible_cpus limit of %i "
+ "reached. Processor %d/0x%x ignored.\n",
+ max, thiscpu, apicid);
+ }

disabled_cpus++;
return -EINVAL;
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index 6066d945c40e..5d30c5e42bb1 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -661,11 +661,28 @@ void irq_complete_move(struct irq_cfg *cfg)
*/
void irq_force_complete_move(struct irq_desc *desc)
{
- struct irq_data *irqdata = irq_desc_get_irq_data(desc);
- struct apic_chip_data *data = apic_chip_data(irqdata);
- struct irq_cfg *cfg = data ? &data->cfg : NULL;
+ struct irq_data *irqdata;
+ struct apic_chip_data *data;
+ struct irq_cfg *cfg;
unsigned int cpu;

+ /*
+ * The function is called for all descriptors regardless of which
+ * irqdomain they belong to. For example if an IRQ is provided by
+ * an irq_chip as part of a GPIO driver, the chip data for that
+ * descriptor is specific to the irq_chip in question.
+ *
+ * Check first that the chip_data is what we expect
+ * (apic_chip_data) before touching it any further.
+ */
+ irqdata = irq_domain_get_irq_data(x86_vector_domain,
+ irq_desc_get_irq(desc));
+ if (!irqdata)
+ return;
+
+ data = apic_chip_data(irqdata);
+ cfg = data ? &data->cfg : NULL;
+
if (!cfg)
return;

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 1ff0598d309c..81160578b91a 100644
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -27,6 +27,7 @@
#include <asm/div64.h>
#include <asm/x86_init.h>
#include <asm/hypervisor.h>
+#include <asm/apic.h>

#define CPUID_VMWARE_INFO_LEAF 0x40000000
#define VMWARE_HYPERVISOR_MAGIC 0x564D5868
@@ -82,10 +83,17 @@ static void __init vmware_platform_setup(void)

VMWARE_PORT(GETHZ, eax, ebx, ecx, edx);

- if (ebx != UINT_MAX)
+ if (ebx != UINT_MAX) {
x86_platform.calibrate_tsc = vmware_get_tsc_khz;
- else
+#ifdef CONFIG_X86_LOCAL_APIC
+ /* Skip lapic calibration since we know the bus frequency. */
+ lapic_timer_frequency = ecx / HZ;
+ pr_info("Host bus clock speed read from hypervisor : %u Hz\n",
+ ecx);
+#endif
+ } else {
pr_warn("Failed to get TSC freq from the hypervisor\n");
+ }
}

/*
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 42a93621f5b0..951f093a96fe 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1407,9 +1407,21 @@ __init void prefill_possible_map(void)
{
int i, possible;

- /* no processor from mptable or madt */
- if (!num_processors)
- num_processors = 1;
+ /* No boot processor was found in mptable or ACPI MADT */
+ if (!num_processors) {
+ int apicid = boot_cpu_physical_apicid;
+ int cpu = hard_smp_processor_id();
+
+ pr_warn("Boot CPU (id %d) not listed by BIOS\n", cpu);
+
+ /* Make sure boot cpu is enumerated */
+ if (apic->cpu_present_to_apicid(0) == BAD_APICID &&
+ apic->apic_id_valid(apicid))
+ generic_processor_info(apicid, boot_cpu_apic_version);
+
+ if (!num_processors)
+ num_processors = 1;
+ }

i = setup_max_cpus ?: 1;
if (setup_possible_cpus == -1) {
diff --git a/arch/x86/kernel/unwind_guess.c b/arch/x86/kernel/unwind_guess.c
index b5a834c93065..9298993dc8b7 100644
--- a/arch/x86/kernel/unwind_guess.c
+++ b/arch/x86/kernel/unwind_guess.c
@@ -5,6 +5,16 @@
#include <asm/stacktrace.h>
#include <asm/unwind.h>

+unsigned long unwind_get_return_address(struct unwind_state *state)
+{
+ if (unwind_done(state))
+ return 0;
+
+ return ftrace_graph_ret_addr(state->task, &state->graph_idx,
+ *state->sp, state->sp);
+}
+EXPORT_SYMBOL_GPL(unwind_get_return_address);
+
bool unwind_next_frame(struct unwind_state *state)
{
struct stack_info *info = &state->stack_info;

Next message: Greg Kroah-Hartman: "Re: [PATCH 4.8 00/10] 4.8.1-stable review"
Previous message: Winkler, Tomas: "RE: [PATCH 4/4] tmp/tpm_crb: implement runtime pm for tpm_crb"
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