This is the start of the stable review cycle for the 4.17.15 release. There are 97 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.

Responses should be made by Thu Aug 16 17:14:15 UTC 2018. Anything received after that time might be too late.

The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.17.15-rc1... or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.17.y and the diffstat can be found below.

thanks,

greg k-h

------------- Pseudo-Shortlog of commits:

Greg Kroah-Hartman gregkh@linuxfoundation.org Linux 4.17.15-rc1

Josh Poimboeuf jpoimboe@redhat.com x86/microcode: Allow late microcode loading with SMT disabled

David Woodhouse dwmw@amazon.co.uk tools headers: Synchronise x86 cpufeatures.h for L1TF additions

Arnaldo Carvalho de Melo acme@redhat.com tools headers: Synchronize prctl.h ABI header

Andi Kleen ak@linux.intel.com x86/mm/kmmio: Make the tracer robust against L1TF

Andi Kleen ak@linux.intel.com x86/mm/pat: Make set_memory_np() L1TF safe

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Invert all not present mappings

Thomas Gleixner tglx@linutronix.de cpu/hotplug: Fix SMT supported evaluation

Paolo Bonzini pbonzini@redhat.com KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry

Paolo Bonzini pbonzini@redhat.com x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry

Paolo Bonzini pbonzini@redhat.com x86/speculation: Simplify sysfs report of VMX L1TF vulnerability

Thomas Gleixner tglx@linutronix.de Documentation/l1tf: Remove Yonah processors from not vulnerable list

Nicolai Stange nstange@suse.de x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()

Nicolai Stange nstange@suse.de x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d

Nicolai Stange nstange@suse.de x86: Don't include linux/irq.h from asm/hardirq.h

Nicolai Stange nstange@suse.de x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d

Nicolai Stange nstange@suse.de x86/irq: Demote irq_cpustat_t::__softirq_pending to u16

Nicolai Stange nstange@suse.de x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush()

Nicolai Stange nstange@suse.de x86/KVM/VMX: Replace 'vmx_l1d_flush_always' with 'vmx_l1d_flush_cond'

Nicolai Stange nstange@suse.de x86/KVM/VMX: Don't set l1tf_flush_l1d to true from vmx_l1d_flush()

Josh Poimboeuf jpoimboe@redhat.com cpu/hotplug: detect SMT disabled by BIOS

Tony Luck tony.luck@intel.com Documentation/l1tf: Fix typos

Nicolai Stange nstange@suse.de x86/KVM/VMX: Initialize the vmx_l1d_flush_pages' content

Jiri Kosina jkosina@suse.cz x86/speculation/l1tf: Unbreak !__HAVE_ARCH_PFN_MODIFY_ALLOWED architectures

Thomas Gleixner tglx@linutronix.de Documentation: Add section about CPU vulnerabilities

Jiri Kosina jkosina@suse.cz x86/bugs, kvm: Introduce boot-time control of L1TF mitigations

Thomas Gleixner tglx@linutronix.de cpu/hotplug: Set CPU_SMT_NOT_SUPPORTED early

Jiri Kosina jkosina@suse.cz cpu/hotplug: Expose SMT control init function

Thomas Gleixner tglx@linutronix.de x86/kvm: Allow runtime control of L1D flush

Thomas Gleixner tglx@linutronix.de x86/kvm: Serialize L1D flush parameter setter

Thomas Gleixner tglx@linutronix.de x86/kvm: Add static key for flush always

Thomas Gleixner tglx@linutronix.de x86/kvm: Move l1tf setup function

Thomas Gleixner tglx@linutronix.de x86/l1tf: Handle EPT disabled state proper

Thomas Gleixner tglx@linutronix.de x86/kvm: Drop L1TF MSR list approach

Thomas Gleixner tglx@linutronix.de x86/litf: Introduce vmx status variable

Thomas Gleixner tglx@linutronix.de cpu/hotplug: Online siblings when SMT control is turned on

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/KVM/VMX: Use MSR save list for IA32_FLUSH_CMD if required

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/KVM/VMX: Extend add_atomic_switch_msr() to allow VMENTER only MSRs

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/KVM/VMX: Separate the VMX AUTOLOAD guest/host number accounting

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/KVM/VMX: Add find_msr() helper function

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/KVM/VMX: Split the VMX MSR LOAD structures to have an host/guest numbers

Paolo Bonzini pbonzini@redhat.com x86/KVM/VMX: Add L1D flush logic

Paolo Bonzini pbonzini@redhat.com x86/KVM/VMX: Add L1D MSR based flush

Paolo Bonzini pbonzini@redhat.com x86/KVM/VMX: Add L1D flush algorithm

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/KVM/VMX: Add module argument for L1TF mitigation

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/KVM: Warn user if KVM is loaded SMT and L1TF CPU bug being present

Thomas Gleixner tglx@linutronix.de cpu/hotplug: Boot HT siblings at least once

Thomas Gleixner tglx@linutronix.de Revert "x86/apic: Ignore secondary threads if nosmt=force"

Michal Hocko mhocko@suse.cz x86/speculation/l1tf: Fix up pte->pfn conversion for PAE

Vlastimil Babka vbabka@suse.cz x86/speculation/l1tf: Protect PAE swap entries against L1TF

Borislav Petkov bp@suse.de x86/CPU/AMD: Move TOPOEXT reenablement before reading smp_num_siblings

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/cpufeatures: Add detection of L1D cache flush support.

Vlastimil Babka vbabka@suse.cz x86/speculation/l1tf: Extend 64bit swap file size limit

Thomas Gleixner tglx@linutronix.de x86/apic: Ignore secondary threads if nosmt=force

Thomas Gleixner tglx@linutronix.de x86/cpu/AMD: Evaluate smp_num_siblings early

Borislav Petkov bp@suse.de x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info

Thomas Gleixner tglx@linutronix.de x86/cpu/intel: Evaluate smp_num_siblings early

Thomas Gleixner tglx@linutronix.de x86/cpu/topology: Provide detect_extended_topology_early()

Thomas Gleixner tglx@linutronix.de x86/cpu/common: Provide detect_ht_early()

Thomas Gleixner tglx@linutronix.de x86/cpu/AMD: Remove the pointless detect_ht() call

Thomas Gleixner tglx@linutronix.de x86/cpu: Remove the pointless CPU printout

Thomas Gleixner tglx@linutronix.de cpu/hotplug: Provide knobs to control SMT

Thomas Gleixner tglx@linutronix.de cpu/hotplug: Split do_cpu_down()

Thomas Gleixner tglx@linutronix.de cpu/hotplug: Make bringup/teardown of smp threads symmetric

Thomas Gleixner tglx@linutronix.de x86/topology: Provide topology_smt_supported()

Thomas Gleixner tglx@linutronix.de x86/smp: Provide topology_is_primary_thread()

Peter Zijlstra peterz@infradead.org sched/smt: Update sched_smt_present at runtime

Konrad Rzeszutek Wilk konrad.wilk@oracle.com x86/bugs: Move the l1tf function and define pr_fmt properly

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Limit swap file size to MAX_PA/2

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Add sysfs reporting for l1tf

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Make sure the first page is always reserved

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation

Linus Torvalds torvalds@linux-foundation.org x86/speculation/l1tf: Protect swap entries against L1TF

Linus Torvalds torvalds@linux-foundation.org x86/speculation/l1tf: Change order of offset/type in swap entry

Andi Kleen ak@linux.intel.com x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT

Nick Desaulniers ndesaulniers@google.com x86/irqflags: Provide a declaration for native_save_fl

Masami Hiramatsu mhiramat@kernel.org kprobes/x86: Fix %p uses in error messages

Jiri Kosina jkosina@suse.cz x86/speculation: Protect against userspace-userspace spectreRSB

Peter Zijlstra peterz@infradead.org x86/paravirt: Fix spectre-v2 mitigations for paravirt guests

Oleksij Rempel o.rempel@pengutronix.de ARM: dts: imx6sx: fix irq for pcie bridge

Al Viro viro@zeniv.linux.org.uk fix __legitimize_mnt()/mntput() race

Al Viro viro@zeniv.linux.org.uk fix mntput/mntput race

Al Viro viro@zeniv.linux.org.uk make sure that __dentry_kill() always invalidates d_seq, unhashed or not

Al Viro viro@zeniv.linux.org.uk root dentries need RCU-delayed freeing

Linus Torvalds torvalds@linux-foundation.org init: rename and re-order boot_cpu_state_init()

Quinn Tran quinn.tran@cavium.com scsi: qla2xxx: Fix memory leak for allocating abort IOCB

Bart Van Assche bart.vanassche@wdc.com scsi: sr: Avoid that opening a CD-ROM hangs with runtime power management enabled

Daniel Borkmann daniel@iogearbox.net bpf, sockmap: fix bpf_tcp_sendmsg sock error handling

Daniel Borkmann daniel@iogearbox.net bpf, sockmap: fix leak in bpf_tcp_sendmsg wait for mem path

Juergen Gross jgross@suse.com xen/netfront: don't cache skb_shinfo()

Minchan Kim minchan@kernel.org zram: remove BD_CAP_SYNCHRONOUS_IO with writeback feature

Daniel Bristot de Oliveira bristot@redhat.com sched/deadline: Update rq_clock of later_rq when pushing a task

Isaac J. Manjarres isaacm@codeaurora.org stop_machine: Disable preemption after queueing stopper threads

Linus Torvalds torvalds@linux-foundation.org Mark HI and TASKLET softirq synchronous

John David Anglin dave.anglin@bell.net parisc: Define mb() and add memory barriers to assembler unlock sequences

Helge Deller deller@gmx.de parisc: Enable CONFIG_MLONGCALLS by default

-------------

Diffstat:

Documentation/ABI/testing/sysfs-devices-system-cpu | 24 + Documentation/admin-guide/index.rst | 9 + Documentation/admin-guide/kernel-parameters.txt | 78 +++ Documentation/admin-guide/l1tf.rst | 610 +++++++++++++++++++++ Makefile | 4 +- arch/Kconfig | 3 + arch/arm/boot/dts/imx6sx.dtsi | 2 +- arch/parisc/Kconfig | 2 +- arch/parisc/include/asm/barrier.h | 32 ++ arch/parisc/kernel/entry.S | 2 + arch/parisc/kernel/pacache.S | 1 + arch/parisc/kernel/syscall.S | 4 + arch/x86/Kconfig | 1 + arch/x86/include/asm/apic.h | 9 + arch/x86/include/asm/cpufeatures.h | 3 + arch/x86/include/asm/dmi.h | 2 +- arch/x86/include/asm/hardirq.h | 26 +- arch/x86/include/asm/irqflags.h | 2 + arch/x86/include/asm/kvm_host.h | 6 + arch/x86/include/asm/msr-index.h | 7 + arch/x86/include/asm/page_32_types.h | 9 +- arch/x86/include/asm/pgtable-2level.h | 17 + arch/x86/include/asm/pgtable-3level.h | 37 +- arch/x86/include/asm/pgtable-invert.h | 32 ++ arch/x86/include/asm/pgtable.h | 74 ++- arch/x86/include/asm/pgtable_64.h | 38 +- arch/x86/include/asm/processor.h | 17 + arch/x86/include/asm/topology.h | 6 +- arch/x86/include/asm/vmx.h | 11 + arch/x86/kernel/apic/apic.c | 16 + arch/x86/kernel/apic/io_apic.c | 1 + arch/x86/kernel/apic/msi.c | 1 + arch/x86/kernel/apic/vector.c | 1 + arch/x86/kernel/cpu/amd.c | 49 +- arch/x86/kernel/cpu/bugs.c | 171 ++++-- arch/x86/kernel/cpu/common.c | 56 +- arch/x86/kernel/cpu/cpu.h | 2 + arch/x86/kernel/cpu/intel.c | 7 + arch/x86/kernel/cpu/microcode/core.c | 16 +- arch/x86/kernel/cpu/topology.c | 41 +- arch/x86/kernel/fpu/core.c | 1 + arch/x86/kernel/hpet.c | 1 + arch/x86/kernel/i8259.c | 1 + arch/x86/kernel/idt.c | 1 + arch/x86/kernel/irq.c | 1 + arch/x86/kernel/irq_32.c | 1 + arch/x86/kernel/irq_64.c | 1 + arch/x86/kernel/irqinit.c | 1 + arch/x86/kernel/kprobes/core.c | 5 +- arch/x86/kernel/paravirt.c | 14 +- arch/x86/kernel/setup.c | 6 + arch/x86/kernel/smp.c | 1 + arch/x86/kernel/smpboot.c | 18 + arch/x86/kernel/time.c | 1 + arch/x86/kvm/mmu.c | 1 + arch/x86/kvm/vmx.c | 455 ++++++++++++--- arch/x86/kvm/x86.c | 34 +- arch/x86/mm/init.c | 23 + arch/x86/mm/kmmio.c | 25 +- arch/x86/mm/mmap.c | 21 + arch/x86/mm/pageattr.c | 8 +- arch/x86/mm/pti.c | 1 + .../intel-mid/device_libs/platform_mrfld_wdt.c | 1 + arch/x86/platform/uv/tlb_uv.c | 1 + arch/x86/xen/enlighten.c | 1 + drivers/base/cpu.c | 8 + drivers/block/zram/zram_drv.c | 15 +- drivers/gpu/drm/i915/i915_pmu.c | 1 + drivers/gpu/drm/i915/intel_lpe_audio.c | 1 + drivers/net/xen-netfront.c | 8 +- drivers/pci/host/pci-hyperv.c | 2 + drivers/scsi/qla2xxx/qla_iocb.c | 53 +- drivers/scsi/sr.c | 29 +- fs/dcache.c | 13 +- fs/namespace.c | 28 +- include/asm-generic/pgtable.h | 12 + include/linux/cpu.h | 23 +- include/linux/swapfile.h | 2 + init/main.c | 2 +- kernel/bpf/sockmap.c | 9 +- kernel/cpu.c | 282 +++++++++- kernel/sched/core.c | 30 +- kernel/sched/deadline.c | 8 +- kernel/sched/fair.c | 1 + kernel/smp.c | 2 + kernel/softirq.c | 12 +- kernel/stop_machine.c | 10 +- mm/memory.c | 37 +- mm/mprotect.c | 49 ++ mm/swapfile.c | 46 +- tools/arch/x86/include/asm/cpufeatures.h | 23 +- tools/include/uapi/linux/prctl.h | 12 + 92 files changed, 2406 insertions(+), 365 deletions(-)