Dave Martin 3fab39997a arm64/sve: Report SVE to userspace via CPUID only if supported ... Currently, the SVE field in ID_AA64PFR0_EL1 is visible unconditionally to userspace via the CPU ID register emulation, irrespective of the kernel config. This means that if a kernel configured with CONFIG_ARM64_SVE=n is run on SVE-capable hardware, userspace will see SVE reported as present in the ID regs even though the kernel forbids execution of SVE instructions. This patch makes the exposure of the SVE field in ID_AA64PFR0_EL1 conditional on CONFIG_ARM64_SVE=y. Since future architecture features are likely to encounter a similar requirement, this patch adds a suitable helper macros for use when declaring config-conditional ID register fields. Fixes: 43994d824e ("arm64/sve: Detect SVE and activate runtime support") Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Reported-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Dave Martin <Dave.Martin@arm.com> Cc: Suzuki Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2017-12-14 15:14:30 +00:00
..
xen	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
acenv.h
acpi.h	arm64: mm: Remove arch_apei_flush_tlb_one()	2017-11-07 12:13:33 +01:00
alternative.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
arch_gicv3.h	irqchip/gic-v3: Add support for Range Selector (RS) feature	2017-10-19 11:22:34 +01:00
arch_timer.h	First batch of KVM changes for 4.15	2017-11-16 13:00:24 -08:00
arm-cci.h
asm-bug.h	arm64: asm-bug: Renumber macro local labels to avoid clashes	2017-10-25 15:57:15 +01:00
asm-offsets.h
asm-uaccess.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
assembler.h	arm64: Add software workaround for Falkor erratum 1041	2017-12-12 11:45:19 +00:00
atomic_ll_sc.h
atomic_lse.h
atomic.h
barrier.h	arm64: sysreg: Move SPE registers and PSB into common header files	2017-10-18 12:53:32 +01:00
bitops.h
bitrev.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
boot.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
brk-imm.h
bug.h
cache.h
cacheflush.h	arm64: mm: cleanup stale AIVIVT references	2017-11-28 18:13:18 +00:00
checksum.h
clocksource.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
cmpxchg.h
compat.h	fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall	2017-11-15 08:08:36 -05:00
compiler.h
cpu_ops.h
cpu.h	arm64/sve: Probe SVE capabilities and usable vector lengths	2017-11-03 15:24:17 +00:00
cpucaps.h	arm64/sve: Detect SVE and activate runtime support	2017-11-03 15:24:21 +00:00
cpufeature.h	arm64/sve: Report SVE to userspace via CPUID only if supported	2017-12-14 15:14:30 +00:00
cpuidle.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
cputype.h	arm64: Define cputype macros for Falkor CPU	2017-12-12 11:45:19 +00:00
current.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
daifflags.h	arm64: Move the async/fiq helpers to explicitly set process context flags	2017-11-02 15:55:41 +00:00
dcc.h
debug-monitors.h
device.h
dma-mapping.h
dmi.h
efi.h	arm64: SW PAN: Point saved ttbr0 at the zero page when switching to init_mm	2017-12-06 18:28:10 +00:00
elf.h	arm64: elf.h: Correct comment about READ_IMPLIES_EXEC propagation	2017-10-09 10:00:23 +01:00
esr.h	arm64/sve: System register and exception syndrome definitions	2017-11-03 15:24:13 +00:00
exception.h
exec.h
extable.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
fb.h
fixmap.h	ACPI / APEI: Replace ioremap_page_range() with fixmap	2017-11-07 12:12:44 +01:00
fpsimd.h	arm64/sve: KVM: Prevent guests from using SVE	2017-11-03 15:24:19 +00:00
fpsimdmacros.h	arm64/sve: Low-level SVE architectural state manipulation functions	2017-11-03 15:24:14 +00:00
ftrace.h
futex.h
hardirq.h
hugetlb.h
hw_breakpoint.h
hwcap.h
hypervisor.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
insn.h
io.h
irq_work.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irq.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irqflags.h	arm64: Move the async/fiq helpers to explicitly set process context flags	2017-11-02 15:55:41 +00:00
jump_label.h
kasan.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kbuild	locking/qrwlock, arm64: Move rwlock implementation over to qrwlocks	2017-10-25 10:57:25 +02:00
kernel-pgtable.h
kexec.h
kgdb.h
kprobes.h
kvm_arm.h	arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one	2017-11-29 16:46:17 +01:00
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_emulate.h	KVM: arm/arm64: fix the incompatible matching for external abort	2017-11-06 16:23:20 +01:00
kvm_host.h	KVM: arm/arm64: debug: Introduce helper for single-step	2017-11-29 16:46:19 +01:00
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_mmu.h
kvm_psci.h
linkage.h	arm64: relax assembly code alignment from 16 byte to 4 byte	2017-09-18 11:20:19 +01:00
lse.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
memblock.h
memory.h	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
mmu_context.h	arm64: SW PAN: Update saved ttbr0 value on enter_lazy_tlb	2017-12-06 18:28:10 +00:00
mmu.h
mmzone.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
module.h	arm64: ftrace: emit ftrace-mod.o contents through code	2017-12-01 13:04:59 +00:00
neon.h
numa.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page-def.h
page.h
paravirt.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
pci.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
percpu.h
perf_event.h	arm64/bpf: correct broken uapi for BPF_PROG_TYPE_PERF_EVENT program type	2017-12-05 15:02:41 +01:00
pgalloc.h	kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK	2017-11-15 18:21:04 -08:00
pgtable-hwdef.h
pgtable-prot.h
pgtable-types.h
pgtable.h	arm64: mm: Fix false positives in set_pte_at access/dirty race detection	2017-12-12 11:42:24 +00:00
probes.h
proc-fns.h
processor.h	arm64/sve: Add prctl controls for userspace vector length management	2017-11-03 15:24:19 +00:00
ptdump.h
ptrace.h
seccomp.h
sections.h
shmparam.h
signal32.h
simd.h
smp_plat.h
smp.h
sparsemem.h
spinlock_types.h	locking/qrwlock, arm64: Move rwlock implementation over to qrwlocks	2017-10-25 10:57:25 +02:00
spinlock.h	locking/qrwlock, arm64: Move rwlock implementation over to qrwlocks	2017-10-25 10:57:25 +02:00
stack_pointer.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
stackprotector.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
stacktrace.h
stage2_pgtable-nopmd.h
stage2_pgtable-nopud.h
stage2_pgtable.h
stat.h
string.h
suspend.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sync_bitops.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
syscall.h
sysreg.h	arm64/sve: System register and exception syndrome definitions	2017-11-03 15:24:13 +00:00
system_misc.h
thread_info.h	arm64/sve: Support vector length resetting for new processes	2017-11-03 15:24:16 +00:00
timex.h	arm64: Use physical counter for in-kernel reads when booted in EL2	2017-11-06 16:23:09 +01:00
tlb.h
tlbflush.h
topology.h	Merge branch 'pm-cpufreq'	2017-11-13 01:34:49 +01:00
traps.h	arm64/sve: Core task context handling	2017-11-03 15:24:15 +00:00
uaccess.h	arm64 updates for 4.14:	2017-09-05 09:53:37 -07:00
unistd32.h
unistd.h
uprobes.h
vdso_datapage.h
vdso.h
virt.h
word-at-a-time.h