Andy Lutomirski dd2f4a004b x86/paravirt: Add paravirt_{read,write}_msr() ...

This adds paravirt callbacks for unsafe MSR access.  On native, they
call native_{read,write}_msr().  On Xen, they use xen_{read,write}_msr_safe().

Nothing uses them yet for ease of bisection.  The next patch will
use them in rdmsrl(), wrmsrl(), etc.

I intentionally didn't make them warn on #GP on Xen.  I think that
should be done separately by the Xen maintainers.

Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: KVM list <kvm@vger.kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: xen-devel <Xen-devel@lists.xen.org>
Link: http://lkml.kernel.org/r/880eebc5dcd2ad9f310d41345f82061ea500e9fa.1459605520.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2016-04-13 11:37:46 +02:00

..

acpi

x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage

2016-04-13 11:37:41 +02:00

apic

x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage

2016-04-13 11:37:41 +02:00

cpu

x86/cpu: Simplify extended APIC ID detection on AMD

2016-04-13 11:37:42 +02:00

fpu

x86/fpu: Get rid of x87 math exception helpers

2016-04-13 11:37:44 +02:00

kprobes

x86/kprobes: Mark kretprobe_trampoline() stack frame as non-standard

2016-02-29 08:35:12 +01:00

.gitignore

…

alternative.c

x86/alternatives: Make optimize_nops() interrupt safe and synced

2015-09-03 21:27:47 +02:00

amd_gart_64.c

x86: enable DMA CMA with swiotlb

2014-06-04 16:53:57 -07:00

amd_nb.c

x86/cpu: Get rid of compute_unit_id

2016-03-29 10:45:04 +02:00

apb_timer.c

x86/apb/timer: Use proper mask to modify hotplug action

2016-03-19 13:40:08 +01:00

aperture_64.c

param: convert some "on"/"off" users to strtobool

2016-03-17 15:09:34 -07:00

apm_32.c

x86: Fix misspellings in comments

2016-02-24 08:44:58 +01:00

asm-offsets_32.c

x86/entry/32: Simplify and fix up the SYSENTER stack #DB/NMI fixup

2016-03-10 09:48:14 +01:00

asm-offsets_64.c

x86/syscalls: Add syscall entry qualifiers

2016-01-29 09:46:38 +01:00

asm-offsets.c

x86/asm-offsets: Remove PARAVIRT_enabled

2016-03-08 14:16:44 +01:00

audit_64.c

x86: hook up execveat system call

2014-12-13 12:42:51 -08:00

bootflag.c

x86: don't use module_init for non-modular core bootflag code

2015-06-16 14:12:34 -04:00

check.c

Merge tag 'v4.2-rc8' into x86/mm, before applying new changes

2015-08-25 09:59:19 +02:00

cpuid.c

new helpers: no_seek_end_llseek{,_size}()

2015-12-23 10:41:31 -05:00

crash_dump_32.c

…

crash_dump_64.c

…

crash.c

x86/kexec: Remove walk_iomem_res() call with GART type

2016-01-30 09:49:59 +01:00

devicetree.c

x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage

2016-04-13 11:37:41 +02:00

doublefault.c

x86: Delete non-required instances of include <linux/init.h>

2014-01-06 21:25:18 -08:00

dumpstack_32.c

Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-04-13 13:23:34 -07:00

dumpstack_64.c

x86/kernel: Use kstack_end() in dumpstack_64.c

2015-02-23 18:37:13 +01:00

dumpstack.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2016-03-19 10:05:34 -07:00

e820.c

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-15 09:32:27 -07:00

early_printk.c

x86: Fix misspellings in comments

2016-02-24 08:44:58 +01:00

early-quirks.c

Merge tag 'v4.4-rc2' into drm-intel-next-queued

2015-11-23 09:04:05 +01:00

espfix_64.c

Merge branch 'x86/urgent' into x86/asm, before applying dependent patches

2015-07-31 10:23:35 +02:00

ftrace.c

Merge tag 'trace-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2016-03-24 10:52:25 -07:00

head32.c

x86: Store a per-cpu shadow copy of CR4

2015-02-04 12:10:42 +01:00

head64.c

Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-15 10:02:25 -07:00

head_32.S

x86/head: Move early exception panic code into early_fixup_exception()

2016-04-13 11:37:44 +02:00

head_64.S

x86/head: Move early exception panic code into early_fixup_exception()

2016-04-13 11:37:44 +02:00

head.c

…

hpet.c

x86/vdso: Remove direct HPET access through the vDSO

2016-04-13 10:28:34 +02:00

hw_breakpoint.c

x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros

2015-12-19 11:49:55 +01:00

i386_ksyms_32.c

preempt: Use preempt_schedule_context() as the official tracing preemption point

2015-06-07 15:57:42 +02:00

i8237.c

…

i8253.c

clockevents/drivers/i8253: Migrate to new 'set-state' interface

2015-08-10 11:40:30 +02:00

i8259.c

x86/irq: Probe for PIC presence before allocating descs for legacy IRQs

2015-11-07 10:37:37 +01:00

io_delay.c

…

ioport.c

x86/iopl: Fix iopl capability check on Xen PV

2016-03-17 09:49:27 +01:00

irq_32.c

genirq: Remove irq argument from irq flow handlers

2015-09-16 15:47:51 +02:00

irq_64.c

x86/irq: Drop unlikely before IS_ERR_OR_NULL

2015-10-01 11:08:56 +02:00

irq_work.c

treewide: Remove old email address

2015-11-23 09:44:58 +01:00

irq.c

x86/irq: Call irq_force_move_complete with irq descriptor

2016-01-15 13:44:01 +01:00

irqinit.c

x86/irq: Store irq descriptor in vector array

2015-08-06 00:14:59 +02:00

jump_label.c

jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}

2015-08-03 11:34:12 +02:00

kdebugfs.c

…

kexec-bzimage64.c

x86: Fix misspellings in comments

2016-02-24 08:44:58 +01:00

kgdb.c

Merge branch 'x86/cleanups' into x86/urgent

2016-03-17 09:44:57 +01:00

ksysfs.c

x86: ksysfs.c build fix

2014-01-03 14:37:13 +00:00

kvm.c

x86/cpufeature: Remove cpu_has_hypervisor

2016-03-31 13:35:07 +02:00

kvmclock.c

x86: Fix misspellings in comments

2016-02-24 08:44:58 +01:00

ldt.c

x86/mm: Factor out LDT init from context init

2016-02-18 19:46:31 +01:00

livepatch.c

livepatch: Cleanup module page permission changes

2015-12-04 22:51:07 +01:00

machine_kexec_32.c

x86, irq: Move IOAPIC related declarations from hw_irq.h into io_apic.h

2014-12-16 14:08:17 +01:00

machine_kexec_64.c

kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE

2016-01-20 17:09:18 -08:00

Makefile

mm, kasan: stackdepot implementation. Enable stackdepot for SLAB

2016-03-25 16:37:42 -07:00

mcount_64.S

x86/ftrace, x86/asm: Kill ftrace_caller_end label

2016-02-17 08:47:22 +01:00

mmconf-fam10h_64.c

…

module.c

x86/mm/KASLR: Propagate KASLR status to kernel proper

2015-04-03 15:26:15 +02:00

mpparse.c

x86/cpufeature: Use enum cpuid_leafs instead of magic numbers

2016-02-01 10:46:48 +01:00

msr.c

x86/cpufeature: Carve out X86_FEATURE_*

2016-01-30 11:22:17 +01:00

nmi_selftest.c

…

nmi.c

x86/nmi: Mark 'ignore_nmis' as __read_mostly

2016-03-08 12:48:19 +01:00

paravirt_patch_32.c

x86/paravirt: Remove the unused irq_enable_sysexit pv op

2015-11-23 10:48:16 +01:00

paravirt_patch_64.c

x86/entry, x86/paravirt: Remove the unused usergs_sysret32 PV op

2015-11-23 10:48:16 +01:00

paravirt-spinlocks.c

locking/pvqspinlock: Rename QUEUED_SPINLOCK to QUEUED_SPINLOCKS

2015-05-11 09:52:09 +02:00

paravirt.c

x86/paravirt: Add paravirt_{read,write}_msr()

2016-04-13 11:37:46 +02:00

pci-calgary_64.c

x86/platform/calgary: Constify cal_chipset_ops structures

2015-11-29 08:50:58 +01:00

pci-dma.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

pci-iommu_table.c

…

pci-nommu.c

x86: Delete non-required instances of include <linux/init.h>

2014-01-06 21:25:18 -08:00

pci-swiotlb.c

x86/mm/64: Enable SWIOTLB if system has SRAT memory regions above MAX_DMA32_PFN

2015-12-06 12:46:31 +01:00

pcspeaker.c

…

perf_regs.c

perf/x86/64: Report regs_user->ax too in get_regs_user()

2015-04-11 13:08:53 +02:00

pmem.c

x86, kexec, nvdimm: Use walk_iomem_res_desc() for iomem search

2016-01-30 09:49:59 +01:00

probe_roms.c

…

process_32.c

sched/core, sched/x86: Kill thread_info::saved_preempt_count

2015-10-06 17:08:18 +02:00

process_64.c

x86/asm, sched/x86: Rewrite the FS and GS context switch code

2016-04-13 10:20:42 +02:00

process.c

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-15 09:32:27 -07:00

ptrace.c

arch/x86/kernel/ptrace.c: Remove unused arg_offs_table

2015-12-29 11:35:34 +01:00

pvclock.c

x86/vdso: Remove pvclock fixmap machinery

2015-12-11 08:56:03 +01:00

quirks.c

timers/x86/hpet: Type adjustments

2015-10-21 11:17:32 +02:00

reboot_fixups_32.c

…

reboot.c

x86/reboot/quirks: Add iMac10,1 to pci_reboot_dmi_table[]

2016-01-12 12:27:36 +01:00

relocate_kernel_32.S

x86/asm: Optimize unnecessarily wide TEST instructions

2015-03-07 11:12:43 +01:00

relocate_kernel_64.S

x86/asm: Replace "MOVQ $imm, %reg" with MOVL

2015-04-01 13:17:39 +02:00

resource.c

x86: don't exclude low BIOS area when allocating address space for non-PCI cards

2014-07-16 12:29:36 -06:00

rtc.c

x86/paravirt: Prevent rtc_cmos platform device init on PV guests

2015-12-19 21:35:13 +01:00

setup_percpu.c

x86: Convert a few more per-CPU items to read-mostly ones

2014-11-04 20:13:28 +01:00

setup.c

Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-20 19:08:56 -07:00

signal_compat.c

x86/compat: Move copy_siginfo_*_user32() to signal_compat.c

2015-07-06 15:28:55 +02:00

signal.c

x86/cpufeature: Replace cpu_has_xsave with boot_cpu_has() usage

2016-04-13 11:37:41 +02:00

smp.c

x86/smp: Remove single IPI wrapper

2015-11-05 13:07:54 +01:00

smpboot.c

x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage

2016-04-13 11:37:41 +02:00

stacktrace.c

perf: generalize perf_callchain

2016-02-20 00:21:44 -05:00

step.c

Merge branch 'x86/urgent' into x86/asm to fix up conflicts and to pick up fixes

2015-08-18 09:39:47 +02:00

sys_x86_64.c

x86/mm: Improve AMD Bulldozer ASLR workaround

2015-03-31 10:01:17 +02:00

sysfb_efi.c

…

sysfb_simplefb.c

x86/simplefb: Use PTR_ERR_OR_ZERO

2014-10-17 13:40:52 -07:00

sysfb.c

x86/sysfb: Use PTR_ERR_OR_ZERO

2014-10-17 13:40:52 -07:00

tboot.c

mm: cleanup *pte_alloc* interfaces

2016-03-17 15:09:34 -07:00

tce_64.c

x86/cpufeature: Remove cpu_has_clflush

2016-03-31 13:35:09 +02:00

test_nx.c

x86/mm: Always enable CONFIG_DEBUG_RODATA and remove the Kconfig option

2016-02-22 08:51:38 +01:00

test_rodata.c

x86/mm: Always enable CONFIG_DEBUG_RODATA and remove the Kconfig option

2016-02-22 08:51:38 +01:00

time.c

x86/asm/entry: Change all 'user_mode_vm()' calls to 'user_mode()'

2015-03-23 11:14:17 +01:00

tls.c

x86, tls: Interpret an all-zero struct user_desc as "no segment"

2015-01-22 21:45:07 +01:00

tls.h

…

topology.c

x86: Drop bogus __ref / __refdata annotations

2015-07-20 18:57:20 +02:00

trace_clock.c

x86/asm/tsc: Add rdtsc_ordered() and use it in trivial call sites

2015-07-06 15:23:29 +02:00

tracepoint.c

…

traps.c

Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-15 10:23:56 -07:00

tsc_msr.c

x86: tsc: Add missing Baytrail frequency to the table

2014-02-19 17:12:24 +01:00

tsc_sync.c

x86/asm/tsc/sync: Use rdtsc_ordered() in check_tsc_warp() and drop extra barriers

2015-07-06 15:23:29 +02:00

tsc.c

x86/tsc: Save an indentation level in recalibrate_cpu_khz()

2016-04-13 11:37:43 +02:00

uprobes.c

uprobes/x86: Make arch_uretprobe_is_alive(RP_CHECK_CALL) more clever

2015-07-31 10:38:06 +02:00

verify_cpu.S

x86/cpufeature: Carve out X86_FEATURE_*

2016-01-30 11:22:17 +01:00

vm86_32.c

x86/cpufeature: Replace the old static_cpu_has() with safe variant

2016-01-30 11:22:18 +01:00

vmlinux.lds.S

arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections

2016-03-25 16:37:42 -07:00

vsmp_64.c

x86: replace __init_or_module with __init in non-modular vsmp_64.c

2015-06-16 14:12:41 -04:00

x86_init.c

x86/tsc: Remove unused tsc_pre_init() hook

2015-11-19 11:03:13 +01:00

x8664_ksyms_64.c

x86/mm, x86/mce: Add memcpy_mcsafe()

2016-03-08 17:54:38 +01:00