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authorThomas Gleixner <tglx@linutronix.de>2018-08-06 21:56:34 +0300
committerThomas Gleixner <tglx@linutronix.de>2018-08-06 21:56:34 +0300
commit315706049c343794ad0d3e5b6f6b60b900457b11 (patch)
tree0a1596a4b5843a6262d17b4c656715854784977d /arch/x86/kernel
parent706d51681d636a0c4a5ef53395ec3b803e45ed4d (diff)
parentc40a56a7818cfe735fc93a69e1875f8bba834483 (diff)
downloadlinux-315706049c343794ad0d3e5b6f6b60b900457b11.tar.xz
Merge branch 'x86/pti-urgent' into x86/pti
Integrate the PTI Global bit fixes which conflict with the 32bit PTI support. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r--arch/x86/kernel/apic/apic.c3
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce.c3
-rw-r--r--arch/x86/kernel/kvmclock.c12
3 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 2aabd4cb0e3f..adbda5847b14 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -573,6 +573,9 @@ static u32 skx_deadline_rev(void)
case 0x04: return 0x02000014;
}
+ if (boot_cpu_data.x86_stepping > 4)
+ return 0;
+
return ~0U;
}
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c102ad51025e..8c50754c09c1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2165,9 +2165,6 @@ static ssize_t store_int_with_restart(struct device *s,
if (check_interval == old_check_interval)
return ret;
- if (check_interval < 1)
- check_interval = 1;
-
mutex_lock(&mce_sysfs_mutex);
mce_restart();
mutex_unlock(&mce_sysfs_mutex);
diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index bf8d1eb7fca3..3b8e7c13c614 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -138,6 +138,7 @@ static unsigned long kvm_get_tsc_khz(void)
src = &hv_clock[cpu].pvti;
tsc_khz = pvclock_tsc_khz(src);
put_cpu();
+ setup_force_cpu_cap(X86_FEATURE_TSC_KNOWN_FREQ);
return tsc_khz;
}
@@ -319,6 +320,8 @@ void __init kvmclock_init(void)
printk(KERN_INFO "kvm-clock: Using msrs %x and %x",
msr_kvm_system_time, msr_kvm_wall_clock);
+ pvclock_set_pvti_cpu0_va(hv_clock);
+
if (kvm_para_has_feature(KVM_FEATURE_CLOCKSOURCE_STABLE_BIT))
pvclock_set_flags(PVCLOCK_TSC_STABLE_BIT);
@@ -366,14 +369,11 @@ int __init kvm_setup_vsyscall_timeinfo(void)
vcpu_time = &hv_clock[cpu].pvti;
flags = pvclock_read_flags(vcpu_time);
- if (!(flags & PVCLOCK_TSC_STABLE_BIT)) {
- put_cpu();
- return 1;
- }
-
- pvclock_set_pvti_cpu0_va(hv_clock);
put_cpu();
+ if (!(flags & PVCLOCK_TSC_STABLE_BIT))
+ return 1;
+
kvm_clock.archdata.vclock_mode = VCLOCK_PVCLOCK;
#endif
return 0;