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16f8a6f979
linux/arch/x86/include/asm
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Nadav Amit 16f8a6f979 KVM: vmx: Unavailable DR4/5 is checked before CPL 
If DR4/5 is accessed when it is unavailable (since CR4.DE is set), then #UD
should be generated even if CPL>0. This is according to Intel SDM Table 6-2:
"Priority Among Simultaneous Exceptions and Interrupts".

Note, that this may happen on the first DR access, even if the host does not
sets debug breakpoints. Obviously, it occurs when the host debugs the guest.

This patch moves the DR4/5 checks from __kvm_set_dr/_kvm_get_dr to handle_dr.
The emulator already checks DR4/5 availability in check_dr_read. Nested
virutalization related calls to kvm_set_dr/kvm_get_dr would not like to inject
exceptions to the guest.

As for SVM, the patch follows the previous logic as much as possible. Anyhow,
it appears the DR interception code might be buggy - even if the DR access
may cause an exception, the instruction is skipped.

Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-11-03 12:07:26 +01:00
..
crypto crypto: move x86 to the generic version of ablk_helper 2013-09-24 06:02:24 +10:00
numachip
trace ftrace, perf: Avoid infinite event generation loop 2013-11-19 16:57:40 +01:00
uv uv: Replace __get_cpu_var 2014-08-26 13:45:50 -04:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
a.out-core.h
acenv.h ACPICA: Linux: Add support to exclude <asm/acenv.h> inclusion. 2014-07-23 01:10:44 +02:00
acpi.h ACPI: Don't use acpi_lapic in ACPI core code 2014-07-21 13:50:58 +02:00
agp.h
alternative-asm.h
alternative.h x86/alternative: Add alternative_input_2 to support alternative with two features and input 2014-05-29 14:24:53 -07:00
amd_nb.h x86/AMD/NB: Fix amd_set_subcaches() parameter type 2014-01-25 08:50:09 +01:00
apb_timer.h
apic_flat_64.h
apic.h Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-08-13 18:23:32 -06:00
apicdef.h
apm.h
arch_hweight.h
archrandom.h random: Add arch_has_random[_seed]() 2014-03-19 22:24:08 -04:00
asm-offsets.h
asm.h kprobes: Introduce NOKPROBE_SYMBOL() macro to maintain kprobes blacklist 2014-04-24 10:02:56 +02:00
atomic64_32.h
atomic64_64.h locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() 2014-10-03 06:06:23 +02:00
atomic.h locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() 2014-10-03 06:06:23 +02:00
barrier.h x86, locking: Use no more OOSTORE nonsense 2014-06-18 18:41:22 +02:00
bios_ebda.h
bitops.h Make ARCH_HAS_FAST_MULTIPLIER a real config variable 2014-09-13 11:14:53 -07:00
boot.h
bootparam_utils.h x86: Don't clear olpc_ofw_header when sentinel is detected 2013-08-09 15:29:48 -07:00
bug.h x86: always define BUG() and HAVE_ARCH_BUG, even with !CONFIG_BUG 2014-04-07 16:36:10 -07:00
bugs.h
cache.h
cacheflush.h
calgary.h
calling.h x86_64, entry: Treat regs->ax the same in fastpath and slowpath syscalls 2014-09-08 14:14:08 -07:00
ce4100.h
checksum_32.h x86, smap: Handle csum_partial_copy_*_user() 2013-09-01 14:09:48 -07:00
checksum_64.h net: Change x86_64 add32_with_carry to allow memory operand 2014-05-05 15:26:29 -04:00
checksum.h
clocksource.h x86, vdso: Make vsyscall_gtod_data handling x86 generic 2014-03-18 12:51:52 -07:00
cmdline.h x86, boot: Carve out early cmdline parsing function 2014-05-20 20:21:24 -07:00
cmpxchg_32.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
cmpxchg_64.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
cmpxchg.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
compat.h
context_tracking.h context_tracking: Move exception handling to generic code 2013-03-07 17:09:25 +01:00
cpu_device_id.h
cpu.h x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
cpufeature.h Merge branch 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-14 02:19:47 +02:00
cpumask.h
crash.h kexec: support for kexec on panic using new system call 2014-08-08 15:57:33 -07:00
current.h
debugreg.h x86: Replace __get_cpu_var uses 2014-08-26 13:45:49 -04:00
delay.h
desc_defs.h
desc.h x86, trace: Delete __trace_alloc_intr_gate() 2013-11-08 14:15:47 -08:00
device.h
disabled-features.h x86: Add more disabled features 2014-09-11 14:30:17 -07:00
div64.h
dma-mapping.h
dma.h
dmi.h firmware/dmi_scan: generalize for use by other archs 2014-01-23 16:36:57 -08:00
dwarf2.h
e820.h x86: avoid remapping data in parse_setup_data() 2013-08-13 23:29:19 -07:00
edac.h
efi.h Merge branch 'next' into efi-next-merge 2014-10-03 22:15:56 +01:00
elf.h x86: Reject x32 executables if x32 ABI not supported 2014-10-08 11:17:42 +02:00
emergency-restart.h reboot: move arch/x86 reboot= handling to generic kernel 2013-07-09 10:33:29 -07:00
entry_arch.h x86, trace: Add irq vector tracepoints 2013-06-20 22:25:34 -07:00
espfix.h x86, espfix: Fix broken header guard 2014-05-02 11:34:17 -07:00
exec.h
fb.h
fixmap.h x86 early_ioremap: Increase FIX_BTMAPS_SLOTS to 8 2014-09-14 15:24:31 +01:00
floppy.h x86: Remove deprecated IRQF_DISABLED 2014-03-04 21:47:51 +01:00
fpu-internal.h x86, fpu: Change __thread_fpu_begin() to use use_eager_fpu() 2014-09-02 14:51:15 -07:00
frame.h
ftrace.h ftrace/x86: Have function graph tracer use its own trampoline 2014-07-17 09:44:37 -04:00
futex.h x86: replace futex_atomic_cmpxchg_inatomic() with user_atomic_cmpxchg_inatomic 2013-12-16 09:08:13 -08:00
gart.h
genapic.h
geode.h
gpio.h
hardirq.h x86, irq, trivial: Minor improvements of IRQ related code 2014-06-21 23:05:41 +02:00
hash.h lib: introduce arch optimized hash library 2013-12-17 14:27:17 -05:00
highmem.h
hpet.h x86/hpet: Make boot_hpet_disable extern 2014-05-08 08:15:34 +02:00
hugetlb.h x86, mm, hugetlb: Add missing TLB page invalidation for hugetlb_cow() 2014-05-13 16:34:09 -07:00
hw_breakpoint.h
hw_irq.h x86/irq: Clean up VECTOR_UNDEFINED and VECTOR_RETRIGGERED definition 2014-04-14 13:42:05 +02:00
hypertransport.h
hypervisor.h x86: Correctly detect hypervisor 2013-08-05 06:35:33 -07:00
i387.h
i8259.h x86, irq: Count legacy IRQs by legacy_pic->nr_legacy_irqs instead of NR_IRQS_LEGACY 2014-06-21 23:05:42 +02:00
ia32_unistd.h
ia32.h
idle.h
inat_types.h
inat.h
init.h
insn.h
inst.h x86, crc32-pclmul: Fix build with older binutils 2013-05-30 16:36:23 -07:00
intel_mid_vrtc.h intel_mid: Renamed *mrst* to *intel_mid* 2013-10-17 16:40:36 -07:00
intel_scu_ipc.h
intel-mid.h x86, intel-mid: Add Merrifield platform support 2014-01-15 14:38:58 -08:00
io_apic.h x86, irq: Fix build error caused by 9eabc99a63 2014-09-01 10:12:03 +02:00
io.h x86: use generic early_ioremap 2014-04-07 16:36:15 -07:00
iomap.h
iommu_table.h
iommu.h
iosf_mbi.h x86, iosf: Added Quark MBI identifiers 2014-05-09 14:57:08 -07:00
ipi.h
irq_regs.h
irq_remapping.h iommu: dmar: Provide arch specific irq allocation 2014-05-16 14:05:19 +02:00
irq_vectors.h KVM: VMX: Register a new IPI for posted interrupt 2013-04-16 16:32:39 -03:00
irq_work.h x86: Tell irq work about self IPI support 2014-09-13 18:38:29 +02:00
irq.h nmi: provide the option to issue an NMI back trace to every cpu but current 2014-06-23 16:47:44 -07:00
irqflags.h x86_64/entry/xen: Do not invoke espfix64 on Xen 2014-07-28 15:25:40 -07:00
ist.h
jump_label.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
kbdleds.h
Kbuild x86: use generic dma-contiguous.h 2014-09-22 13:35:52 +02:00
kdebug.h x86/dumpstack: Fix printk_address for direct addresses 2013-11-12 21:06:06 +01:00
kexec-bzimage64.h kexec-bzImage64: support for loading bzImage using 64bit entry 2014-08-08 15:57:33 -07:00
kexec.h kexec: support for kexec on panic using new system call 2014-08-08 15:57:33 -07:00
kgdb.h
kmap_types.h
kmemcheck.h
kprobes.h kprobes/x86: Remove stale ARCH_SUPPORTS_KPROBES_ON_FTRACE define 2014-10-17 07:18:34 +02:00
kvm_emulate.h KVM: emulate: put pointers in the fetch_cache 2014-07-11 09:14:03 +02:00
kvm_guest.h
kvm_host.h KVM: vmx: Unavailable DR4/5 is checked before CPL 2014-11-03 12:07:26 +01:00
kvm_para.h x86: kvm: use alternatives for VMCALL vs. VMMCALL if kernel text is read-only 2014-09-24 14:07:57 +02:00
lguest_hcall.h
lguest.h lguest: map Switcher below fixmap. 2013-04-22 15:45:03 +09:30
linkage.h
local64.h
local.h x86, bitops: Correct the assembly constraints to testing bitops 2013-12-04 14:31:28 -08:00
mach_timer.h
mach_traps.h
math_emu.h
mc146818rtc.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
mce.h hwpoison: remove unused global variable in do_machine_check() 2014-06-04 16:54:11 -07:00
microcode_amd.h x86, microcode, AMD: Fix early ucode loading 2014-01-13 19:59:38 +01:00
microcode_intel.h x86, microcode, intel: Fix total_size computation 2014-07-28 16:08:02 +02:00
microcode.h x86, microcode: Add a disable chicken bit 2014-05-20 20:21:27 -07:00
misc.h x86: Improve the printout of the SMP bootup CPU table 2013-09-28 10:10:26 +02:00
mmconfig.h x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
mmu_context.h x86/mm: Add tracepoints for TLB flushes 2014-07-31 08:48:51 -07:00
mmu.h x86, vdso: Reimplement vdso.so preparation in build-time C 2014-05-05 13:18:51 -07:00
mmx.h
mmzone_32.h x86, platforms: Remove NUMAQ 2014-02-27 08:07:39 -08:00
mmzone_64.h
mmzone.h
module.h
mpspec_def.h
mpspec.h x86, apic: Remove mps_oem_check callback 2014-07-31 08:05:42 -07:00
mshyperv.h x86: hyperv: Fixup the (brain) damage caused by the irq cleanup 2014-03-05 13:42:14 +01:00
msidef.h
msr.h x86: Add another set of MSR accessor functions 2014-03-13 15:34:45 -07:00
mtrr.h Add arch_phys_wc_{add, del} to manipulate WC MTRRs if needed 2013-05-31 13:02:52 +10:00
mutex_32.h x86: Simplify __HAVE_ARCH_CMPXCHG tests 2014-07-11 17:28:51 -07:00
mutex_64.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
mutex.h
mwait.h x86, cpufeature: Convert more "features" to bugs 2014-06-18 15:27:04 -07:00
nmi.h x86/nmi: Push duration printk() to irq context 2014-02-09 13:17:22 +01:00
nops.h
numa_32.h
numa.h x86/mm/numa: Drop dead code and rename setup_node_data() to setup_alloc_data() 2014-09-16 08:55:10 +02:00
olpc_ofw.h
olpc.h
page_32_types.h x86, relocs: Move ELF relocation handling to C 2013-08-07 21:00:04 -07:00
page_32.h x86/mm: Implement ASLR for hugetlb mappings 2013-11-19 14:24:50 +01:00
page_64_types.h x86_64: expand kernel stack to 16K 2014-05-30 11:52:51 -07:00
page_64.h arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 2014-08-08 15:57:27 -07:00
page_types.h x86: revert wrong memblock current limit setting 2014-01-27 21:02:38 -08:00
page.h arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 2014-08-08 15:57:27 -07:00
paravirt_types.h x86, asmlinkage, paravirt: Don't rely on local assembler labels 2014-01-29 22:17:17 -08:00
paravirt.h x86, asmlinkage, paravirt: Make paravirt thunks global 2014-01-29 22:17:17 -08:00
parport.h
pat.h
pci_64.h
pci_x86.h
pci-direct.h
pci-functions.h
pci.h PCI: Turn pcibios_penalize_isa_irq() into a weak function 2014-05-27 16:23:58 -06:00
percpu.h percpu: invoke __verify_pcpu_ptr() from the generic part of accessors and operations 2014-06-17 19:12:40 -04:00
perf_event_p4.h percpu: Resolve ambiguities in __get_cpu_var/cpumask_var_t 2014-08-28 08:58:57 -04:00
perf_event.h perf/x86: Revamp PEBS event selection 2014-08-13 07:51:13 +02:00
pgalloc.h x86, mm: enable split page table lock for PMD level 2013-11-15 09:32:15 +09:00
pgtable_32_types.h
pgtable_32.h x86: Remove set_pmd_pfn 2014-09-01 10:15:31 +02:00
pgtable_64_types.h x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack 2014-04-30 14:14:28 -07:00
pgtable_64.h Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-10-14 02:22:41 +02:00
pgtable_types.h xen: features and fixes for 3.18-rc0 2014-10-11 20:29:01 -04:00
pgtable-2level_types.h
pgtable-2level.h mm: x86 pgtable: require X86_64 for soft-dirty tracker 2014-06-04 16:54:05 -07:00
pgtable-3level_types.h
pgtable-3level.h mm: save soft-dirty bits on file pages 2013-08-13 17:57:48 -07:00
pgtable.h x86,mm: fix pte_special versus pte_numa 2014-08-29 16:28:16 -07:00
platform_sst_audio.h ASoC: Intel: add mrfld pipelines 2014-06-23 12:24:27 +01:00
pmc_atom.h x86/pmc_atom: Expose PMC device state and platform sleep state 2014-07-25 14:12:14 -07:00
posix_types.h
preempt.h sched: stop the unbound recursion in preempt_schedule_context() 2014-10-28 10:46:05 +01:00
probe_roms.h
processor-cyrix.h
processor-flags.h
processor.h Merge branch 'x86-xsave-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-08-13 18:20:04 -06:00
prom.h x86, devicetree, irq: Use common mechanism to support irqdomain 2014-06-21 23:05:43 +02:00
proto.h x86, vdso: Move syscall and sysenter setup into kernel/cpu/common.c 2014-05-05 13:18:47 -07:00
ptrace.h x86: Split syscall_trace_enter into two phases 2014-09-08 14:14:03 -07:00
pvclock-abi.h
pvclock.h pvclock: detect watchdog reset at pvclock read 2013-11-06 09:48:43 +02:00
qrwlock.h x86, locking: Use no more OOSTORE nonsense 2014-06-18 18:41:22 +02:00
realmode.h
reboot_fixups.h
reboot.h
required-features.h
resume-trace.h
rio.h
rmwcc.h x86, bitops: Correct the assembly constraints to testing bitops 2013-12-04 14:31:28 -08:00
rtc.h
rwsem.h x86 rwsem: avoid taking slow path when stealing write lock 2013-05-07 07:20:17 -07:00
seccomp_32.h
seccomp_64.h
seccomp.h
sections.h
segment.h x86, trace: Register exception handler to trace IDT 2013-11-08 14:15:45 -08:00
serial.h x86/tty/serial/8250: Clean up the asm/serial.h include file a bit 2014-09-06 10:20:55 +02:00
setup_arch.h
setup.h x86, espfix: Move espfix definitions into a separate header file 2014-05-01 14:16:15 -07:00
shmparam.h
sigcontext.h
sigframe.h
sighandling.h x86/signals: Propagate RF EFLAGS bit through the signal restore call 2013-05-28 08:46:50 +02:00
signal.h signals: kill sigfindinword() 2014-06-06 16:08:11 -07:00
simd.h crypto: move x86 to the generic version of ablk_helper 2013-09-24 06:02:24 +10:00
smap.h
smp.h x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
smpboot_hooks.h x86, apic: Replace trampoline physical addresses with defaults 2014-07-31 08:05:41 -07:00
sparsemem.h
special_insns.h x86: Add support for the clflushopt instruction 2014-02-27 08:23:28 -08:00
spinlock_types.h locking/rwlock, x86: Clean up asm/spinlock*.h to remove old rwlock code 2014-09-10 11:46:38 +02:00
spinlock.h locking/rwlock, x86: Clean up asm/spinlock*.h to remove old rwlock code 2014-09-10 11:46:38 +02:00
sta2x11.h
stackprotector.h
stacktrace.h
string_32.h
string_64.h
string.h
suspend_32.h x86, gdt, hibernate: Store/load GDT for hibernate path. 2013-05-02 11:27:35 -07:00
suspend_64.h x86, gdt, hibernate: Store/load GDT for hibernate path. 2013-05-02 11:27:35 -07:00
suspend.h
svm.h
swiotlb.h x86: enable DMA CMA with swiotlb 2014-06-04 16:53:57 -07:00
switch_to.h x86, asmlinkage: Make 32bit/64bit __switch_to visible 2013-08-06 14:18:30 -07:00
sync_bitops.h arch,x86: Convert smp_mb__*() 2014-04-18 14:20:46 +02:00
sys_ia32.h unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
syscall.h audit: use uapi/linux/audit.h for AUDIT_ARCH declarations 2014-03-20 10:11:59 -04:00
syscalls.h x86, asmlinkage: Make various syscalls asmlinkage 2013-08-06 14:18:33 -07:00
sysfb.h x86: sysfb: move EFI quirks from efifb to sysfb 2013-08-02 16:17:47 -07:00
tce.h
thread_info.h sched/idle, x86: Switch from TS_POLLING to TIF_POLLING_NRFLAG 2014-05-08 09:16:56 +02:00
time.h
timer.h Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 12:03:57 -08:00
timex.h
tlb.h x86-32: Fix possible incomplete TLB invalidate with PAE pagetables 2013-04-12 16:56:47 -07:00
tlbflush.h mm, x86: Account for TLB flushes only when debugging 2014-01-25 09:10:41 +01:00
topology.h PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
trace_clock.h
traps.h Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-06-12 19:18:49 -07:00
tsc.h x86, tsc: Fallback to normal calibration if fast MSR calibration fails 2014-02-19 17:12:24 +01:00
uaccess_32.h x86: Unify copy_to_user() and add size checking to it 2013-10-26 12:27:37 +02:00
uaccess_64.h x86, sparse: Do not force removal of __user when calling copy_to/from_user_nocheck() 2014-01-04 13:54:50 -08:00
uaccess.h Merge branch 'x86/mpx' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 14:46:32 -08:00
unaligned.h
unistd.h sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
uprobes.h uprobes/x86: Rename arch_uprobe->def to ->defparam, minor comment updates 2014-06-05 16:21:57 +02:00
user32.h
user_32.h
user_64.h
user.h
vdso.h x86, vdso: Move the vvar area before the vdso text 2014-07-11 16:57:51 -07:00
vga.h x86, ia64: Move EFI_FB vga_default_device() initialization to pci_vga_fixup() 2014-07-10 16:48:48 -06:00
vgtod.h x86, vdso: Add 32 bit VDSO time support for 64 bit kernel 2014-03-18 12:52:41 -07:00
virtext.h
vm86.h
vmx.h KVM: nVMX: Fix returned value of MSR_IA32_VMX_PROCBASED_CTLS 2014-06-19 12:52:12 +02:00
vsyscall.h
vvar.h x86, vdso: Move the vvar and hpet mappings next to the 64-bit vDSO 2014-05-05 13:19:01 -07:00
word-at-a-time.h
x2apic.h
x86_init.h PCI: Drop "irq" param from *_restore_msi_irqs() 2013-12-13 08:44:30 -07:00
xcr.h
xor_32.h
xor_64.h
xor_avx.h crypto: xor - Check for osxsave as well as avx in crypto/xor 2013-08-21 21:08:35 +10:00
xor.h
xsave.h x86, xsave: Add forgotten inline annotation 2014-06-18 15:19:59 -07:00