Christoffer Dall 688c50aa72 KVM: arm/arm64: Move timer save/restore out of the hyp code ... As we are about to be lazy with saving and restoring the timer registers, we prepare by moving all possible timer configuration logic out of the hyp code. All virtual timer registers can be programmed from EL1 and since the arch timer is always a level triggered interrupt we can safely do this with interrupts disabled in the host kernel on the way to the guest without taking vtimer interrupts in the host kernel (yet). The downside is that the cntvoff register can only be programmed from hyp mode, so we jump into hyp mode and back to program it. This is also safe, because the host kernel doesn't use the virtual timer in the KVM code. It may add a little performance performance penalty, but only until following commits where we move this operation to vcpu load/put. Signed-off-by: Christoffer Dall <cdall@linaro.org> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>		2017-11-06 16:23:13 +01:00
..
hardware	ARM/clk: move the ICST library to drivers/clk	2017-04-07 11:58:12 +02:00
mach	ARM/PCI: Convert PCI scan API to pci_scan_root_bus_bridge()	2017-06-28 15:13:55 -05:00
xen	xen: avoid type warning in xchg_xen_ulong	2017-06-08 15:07:38 -07:00
arch_gicv3.h	irqchip/gic-v3-its: Add VPE interrupt masking	2017-08-31 15:31:38 +01:00
arch_timer.h	clocksource: arch_timer: Fix code to use physical timers when requested	2014-12-04 23:30:26 -08:00
arm-cci.h	arm-cci: Get rid of secure transactions for PMU driver	2015-03-27 13:44:35 +00:00
asm-offsets.h
assembler.h	ARM: Prepare for randomized task_struct	2017-06-30 12:00:50 -07:00
atomic.h	locking/atomic: Remove linux/atomic.h:atomic_fetch_or()	2016-06-16 10:48:32 +02:00
auxvec.h	ARM: 8329/1: miscellaneous vdso infrastructure, preparation	2015-03-27 22:20:45 +00:00
barrier.h	ARM: 8582/1: remove unused CONFIG_ARCH_HAS_BARRIERS	2016-07-02 11:01:08 +01:00
bitops.h	ARM: 8679/1: bitops: Align prototypes to generic API	2017-06-18 22:36:33 +01:00
bitrev.h	ARM: 8287/1: add bitrev.h file to support rbit instruction	2015-01-16 14:06:18 +00:00
bL_switcher.h	ARM: bL_switcher: Add query interface to discover CPU affinities	2013-09-23 18:47:31 -04:00
bug.h	debug: Fix WARN_ON_ONCE() for modules	2017-07-20 12:31:04 +02:00
bugs.h
cache.h
cacheflush.h	randstruct: opt-out externally exposed function pointer structs	2017-06-30 12:00:52 -07:00
cachetype.h	ARM: 8604/1: V7M: Add support for reading the CTR with read_cpuid_cachetype()	2016-09-06 15:51:07 +01:00
checksum.h	ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short	2016-03-13 23:55:13 -04:00
clocksource.h	arm/arm64: arch_timer: Use archdata to indicate vdso suitability	2016-09-23 17:19:25 +01:00
cmpxchg.h	ARM: 8443/1: Adding support for atomic half word exchange	2015-10-09 16:22:54 +01:00
compiler.h	ARM: 8300/1: teach __asmeq that r11 == fp and r12 == ip	2015-02-10 10:23:11 +00:00
cp15.h	ARM: Move system register accessors to asm/cp15.h	2016-09-22 13:22:10 +02:00
cpu.h
cpufeature.h	ARM: 8663/1: wire up HWCAP/HWCAP2 feature bits to the CPU modalias	2017-03-30 19:45:52 +01:00
cpuidle.h	ARM: cpuidle: add const qualifier to cpuidle_ops member in structures	2016-04-20 06:59:10 +02:00
cputype.h	ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs	2017-01-10 23:32:26 +00:00
cti.h
dcc.h	ARM: tty: Move HVC DCC assembly to arch/arm	2014-05-28 13:33:18 -07:00
delay.h	ARM: 8619/1: udelay: document the various constants	2016-10-19 10:52:36 +01:00
device.h	ARM: dma-mapping: Don't tear down third-party mappings	2017-05-30 11:31:33 +02:00
div64.h	ARM: 8504/1: __arch_xprod_64(): small optimization	2016-02-11 15:33:37 +00:00
dma-contiguous.h	drivers: dma-contiguous: clean source code and prepare for device tree	2013-08-27 09:18:29 +02:00
dma-iommu.h	arm: remove arch specific dma_supported implementation	2017-06-28 06:54:45 -07:00
dma-mapping.h	ARM: NOMMU: Introduce dma operations for noMMU	2017-06-30 10:03:09 -07:00
dma.h	remove <asm/scatterlist.h>	2015-05-05 13:35:39 -06:00
dmi.h	efi/arm: Enable DMI/SMBIOS	2017-06-05 17:50:44 +02:00
domain.h	ARM: 8573/1: domain: move {set,get}_domain under config guard	2016-05-05 19:03:02 +01:00
ecard.h
edac.h	EDAC: Cleanup atomic_scrub mess	2015-05-28 15:31:53 +02:00
efi.h	efi/arm-stub: Correct FDT and initrd allocation rules for arm64	2017-04-05 12:27:23 +02:00
elf.h	arm: move ELF_ET_DYN_BASE to 4MB	2017-07-10 16:32:36 -07:00
entry-macro-multi.S	ARM: replace BSYM() with badr assembly macro	2015-05-08 17:33:50 +01:00
exception.h	arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections	2016-03-25 16:37:42 -07:00
fb.h
fiq.h
firmware.h	ARM: EXYNOS: add exynos_get_boot_addr() helper	2015-06-06 02:17:56 +09:00
fixmap.h	ARM: 8667/3: Fix memory attribute inconsistencies when using fixmap	2017-04-20 11:19:42 +01:00
flat.h	binfmt_flat: flat_{get,put}_addr_from_rp() should be able to fail	2017-07-03 18:44:02 -04:00
floppy.h	ARM: 8584/1: floppy: avoid gcc-6 warning	2016-07-02 11:02:13 +01:00
fncpy.h
fpstate.h
ftrace.h	ARM: 8678/1: ftrace: Adds support for CONFIG_DYNAMIC_FTRACE_WITH_REGS	2017-06-18 22:25:16 +01:00
futex.h	futex: Remove duplicated code and fix undefined behaviour	2017-08-25 22:49:59 +02:00
glue-cache.h	ARM: 8607/1: V7M: Wire up caches for V7M processors with cache support.	2016-09-06 15:51:08 +01:00
glue-df.h	ARM: 8065/1: remove last use of CONFIG_CPU_ARM710	2014-05-30 01:12:30 +01:00
glue-pf.h
glue-proc.h	ARM: 8103/1: save/restore Cortex-A9 CP15 registers on suspend/resume	2014-07-18 12:29:37 +01:00
glue.h
gpio.h	ARM: delete old reference to ARM_GPIOLIB_COMPLEX	2014-06-30 21:37:39 +02:00
hardirq.h	ARM: 8487/1: Remove IPI_CALL_FUNC_SINGLE	2015-12-22 12:09:43 +00:00
highmem.h	kmap_atomic_to_page() has no users, remove it	2015-11-09 15:11:24 -08:00
hugetlb-3level.h
hugetlb.h	mm/hugetlb: remove arch_prepare/release_hugepage from arch headers	2015-06-25 17:00:35 -07:00
hw_breakpoint.h	ARM: 8598/1: remove traces of perf_ops_bp	2016-08-23 10:09:23 +01:00
hw_irq.h	ARM: Remove ununsed set_irq_flags	2015-09-16 16:53:39 +02:00
hwcap.h	ARM: 7981/1: add support for AT_HWCAP2 ELF auxv entry	2014-02-25 11:40:48 +00:00
hypervisor.h
ide.h
idmap.h
insn.h	ARM: kprobes: enable OPTPROBES for ARM 32	2015-01-13 16:10:17 +00:00
io.h	ARM: Implement pci_remap_cfgspace() interface	2017-04-24 13:53:13 -05:00
irq_work.h	arm: Tell irq work about self IPI support	2014-09-13 18:38:39 +02:00
irq.h	nmi_backtrace: add more trigger_*_cpu_backtrace() methods	2016-10-07 18:46:30 -07:00
irqflags.h	ARM: 8422/1: enable imprecise aborts during early kernel startup	2015-09-22 08:13:56 +01:00
jump_label.h	locking/static_keys: Add a new static_key interface	2015-08-03 11:34:15 +02:00
Kbuild	ARM: move generic-y of exported headers to uapi/asm/Kbuild	2017-07-10 03:43:20 +09:00
kexec.h	ARM: kexec: fix failure to boot crash kernel	2017-07-20 11:37:42 +01:00
kgdb.h	ARM: kdgb: use <asm/opcodes.h> for data to be assembled as intruction	2013-10-19 20:46:35 +01:00
kmap_types.h
kprobes.h	kprobes: move kprobe declarations to asm-generic/kprobes.h	2017-02-27 18:43:45 -08:00
kvm_arm.h	KVM: arm/arm64: Fix guest external abort matching	2017-09-05 17:33:37 +02:00
kvm_asm.h	KVM: arm/arm64: Move timer save/restore out of the hyp code	2017-11-06 16:23:13 +01:00
kvm_coproc.h	KVM: arm: plug potential guest hardware debug leakage	2017-05-15 14:29:19 +02:00
kvm_emulate.h	KVM: arm/arm64: Fix guest external abort matching	2017-09-05 17:33:37 +02:00
kvm_host.h	KVM: update to new mmu_notifier semantic v2	2017-08-31 16:13:00 -07:00
kvm_hyp.h	KVM: arm/arm64: Move timer save/restore out of the hyp code	2017-11-06 16:23:13 +01:00
kvm_mmio.h	KVM: arm/arm64: Export mmio_read/write_bus	2016-05-20 15:39:42 +02:00
kvm_mmu.h	arm/arm64: KVM: Remove kvm_get_idmap_start	2017-04-09 07:49:32 -07:00
kvm_psci.h	ARM/ARM64: KVM: Make kvm_psci_call() return convention more flexible	2014-04-30 04:18:57 -07:00
limits.h
linkage.h
mc146818rtc.h
mcpm.h	ARM: MCPM: remove residency argument from mcpm_cpu_suspend()	2015-05-06 11:47:10 -04:00
mcs_spinlock.h	ARM: 8098/1: mcs lock: implement wfe-based polling for MCS locking	2014-07-18 12:29:35 +01:00
memblock.h	ARM: 8025/1: Get rid of meminfo	2014-06-01 01:17:12 +01:00
memory.h	ARM: 8648/2: nommu: display vectors base	2017-02-28 11:06:14 +00:00
mmu_context.h	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
mmu.h	ARM: 8329/1: miscellaneous vdso infrastructure, preparation	2015-03-27 22:20:45 +00:00
module.h	ARM: 8662/1: module: split core and init PLT sections	2017-03-17 10:01:28 +00:00
mpu.h
mtd-xip.h
neon.h
nwflash.h
opcodes-sec.h
opcodes-virt.h
opcodes.h
outercache.h	ARM: move heavy barrier support out of line	2015-07-25 15:28:05 +01:00
page-nommu.h	ARM: 8684/1: NOMMU: Remove unused KTHREAD_SIZE definition	2017-06-27 14:58:10 +01:00
page.h	ARM: make vectors page inaccessible from userspace	2013-08-01 14:31:58 +01:00
paravirt.h	arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops	2015-12-21 14:40:54 +00:00
patch.h	ARM: probes: move all probe code to dedicate directory	2015-01-09 09:36:50 +00:00
pci.h	ARM/PCI: Use generic pci_mmap_resource_range()	2017-04-20 08:47:47 -05:00
percpu.h	ARM: 8174/1: Use global stack register variable for percpu	2014-11-13 23:58:06 +00:00
perf_event.h	arm: perf: Fix callchain parse error with kernel tracepoint events	2015-05-27 16:12:05 +01:00
pgalloc.h	arm: get rid of superfluous __GFP_REPEAT	2016-07-26 16:19:19 -07:00
pgtable-2level-hwdef.h	ARM: 8612/1: LPAE: initialize cache policy correctly	2016-09-12 12:12:30 +01:00
pgtable-2level-types.h
pgtable-2level.h	ARM: 8578/1: mm: ensure pmd_present only checks the valid bit	2016-06-09 17:51:47 +01:00
pgtable-3level-hwdef.h	ARM: 8612/1: LPAE: initialize cache policy correctly	2016-09-12 12:12:30 +01:00
pgtable-3level-types.h
pgtable-3level.h	ARM: 8579/1: mm: Fix definition of pmd_mknotpresent	2016-06-09 17:51:47 +01:00
pgtable-hwdef.h
pgtable-nommu.h	ARM: 8676/1: NOMMU: provide pgprot_device() macro	2017-06-05 10:29:40 +01:00
pgtable.h	arch, mm: convert all architectures to use 5level-fixup.h	2017-03-09 11:48:47 -08:00
probes.h	ARM: optprobes: execute instruction during restoring if possible.	2015-01-14 12:24:52 +00:00
proc-fns.h	ARM: soft-reboot into same mode that we entered the kernel	2017-04-09 07:49:24 -07:00
processor.h	locking/core: Provide common cpu_relax_yield() definition	2016-11-17 08:17:36 +01:00
procinfo.h
prom.h	of/fdt: move memreserve and dtb memory reservations into core	2014-04-30 00:59:17 -05:00
psci.h	ARM: SoC cleanups for v4.5	2016-01-20 17:55:20 -08:00
ptrace.h	ARM: save and reset the address limit when entering an exception	2016-07-07 16:01:01 +01:00
sections.h	ARM: 8518/1: Use correct symbols for XIP_KERNEL	2016-02-11 15:43:14 +00:00
set_memory.h	treewide: move set_memory_* functions away from cacheflush.h	2017-05-08 17:15:13 -07:00
setup.h	ARM: 8495/1: ATAGS: move save_atags() to arch/arm/include/asm/setup.h	2016-01-04 11:26:00 +00:00
shmparam.h
signal.h
smp_plat.h	ARM: 8392/3: smp: Only expose /sys/.../cpuX/online if hotpluggable	2015-07-31 18:58:30 +01:00
smp_scu.h	ARM: 8689/1: scu: add missing errno include	2017-08-02 14:14:54 +01:00
smp_twd.h
smp.h	ARM: 8423/1: add const qualifier to smp_operations member in structures	2015-09-22 08:13:57 +01:00
sparsemem.h	ARM: 8411/1: Add default SPARSEMEM settings	2016-02-16 16:35:21 +00:00
spinlock_types.h	ARM: locks: prefetch the destination word for write prior to strex	2013-09-30 16:42:55 +01:00
spinlock.h	arch: Remove spin_unlock_wait() arch-specific definitions	2017-08-17 08:08:59 -07:00
stackprotector.h
stacktrace.h	ARM: 8070/1: Introduce arm_get_current_stack_frame()	2014-07-18 12:29:11 +01:00
stage2_pgtable.h	kvm-arm: arm32: Introduce stage2 page table helpers	2016-04-21 14:57:26 +02:00
string.h	ARM: implement memset32 & memset64	2017-09-08 18:26:48 -07:00
suspend.h	ARM: 8688/1: pm: add missing types include	2017-08-02 14:14:28 +01:00
swab.h
switch_to.h	sched, arm: Remove finish_arch_switch()	2015-08-04 09:37:52 +02:00
sync_bitops.h	ARM: 7989/1: Delete asm/system.h	2014-02-25 11:33:37 +00:00
syscall.h	ARM: 8152/1: Convert pr_warning to pr_warn	2014-09-26 14:39:53 +01:00
system_info.h	ARM: 8355/1: arch: Show the serial number from devicetree in cpuinfo	2015-05-08 10:42:35 +01:00
system_misc.h	arm/arm64: KVM: add guest SEA support	2017-06-22 18:22:05 +01:00
tcm.h
therm.h
thread_info.h	Revert "arm/syscalls: Check address limit on user-mode return"	2017-09-17 19:45:33 +02:00
thread_notify.h
timex.h	ARM: drop <mach/timex.h> for !ARCH_MULTIPLATFORM, too	2013-12-20 17:17:16 +01:00
tlb.h	mm: fix MADV_[FREE|DONTNEED] TLB flush miss problem	2017-08-10 15:54:07 -07:00
tlbflush.h	sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h>	2017-03-02 08:42:37 +01:00
tls.h	ARM: 8178/1: fix set_tls for !CONFIG_KUSER_HELPERS	2014-09-30 16:55:23 +01:00
topology.h	sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask()	2015-05-27 15:22:15 +02:00
traps.h	irq: Make the irqentry text section unconditional	2017-08-10 16:28:53 +02:00
trusted_foundations.h	treewide: remove redundant #include <linux/kconfig.h>	2016-10-11 15:06:33 -07:00
uaccess.h	Revert "arm/syscalls: Check address limit on user-mode return"	2017-09-17 19:45:33 +02:00
ucontext.h	ARM: 8687/1: signal: Fix unparseable iwmmxt_sigframe in uc_regspace[]	2017-07-24 14:26:55 +01:00
unified.h	ARM: replace BSYM() with badr assembly macro	2015-05-08 17:33:50 +01:00
unistd.h	ARM: wire up new pkey syscalls	2016-10-19 10:18:47 +01:00
unwind.h
uprobes.h	ARM: add uprobes support	2014-03-18 16:39:40 -04:00
user.h
v7m.h	ARM: 8603/1: V7M: Add addresses for mem-mapped V7M cache operations	2016-09-06 15:51:06 +01:00
vdso_datapage.h	ARM: 8329/1: miscellaneous vdso infrastructure, preparation	2015-03-27 22:20:45 +00:00
vdso.h	ARM: 8329/1: miscellaneous vdso infrastructure, preparation	2015-03-27 22:20:45 +00:00
vfp.h	ARM: vfp: Add vfp_disable for problematic platforms	2015-05-20 15:07:00 -07:00
vfpmacros.h
vga.h
virt.h	ARM: hyp-stub/KVM: Kill __hyp_get_vectors	2017-04-09 07:49:34 -07:00
word-at-a-time.h	ARM: 8322/1: keep .text and .fixup regions closer together	2015-03-29 23:11:56 +01:00
xor.h	ARM: crypto: add NEON accelerated XOR implementation	2013-07-08 22:09:06 +01:00