arm64/boot: Disable trapping of PMZR_EL0 writes to EL2grafted

__init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2.
PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in
HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host
traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The
kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU
driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a
write from EL0 reaches the trap and takes the host down without a panic
message.

Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already
does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9
bits.

Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9")
Cc: stable@vger.kernel.org
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/drivers/input/Makefile b/drivers/input/Makefile
new file mode 100644
index 000000000..2cd6e1c9a
--- /dev/null
+++ b/drivers/input/Makefile
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the input core drivers.
+#
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_INPUT)		+= input-core.o
+input-core-y := input.o input-compat.o input-mt.o input-poller.o ff-core.o
+input-core-y += touchscreen.o touch-overlay.o
+
+obj-$(CONFIG_INPUT_FF_MEMLESS)	+= ff-memless.o
+obj-$(CONFIG_INPUT_SPARSEKMAP)	+= sparse-keymap.o
+obj-$(CONFIG_INPUT_MATRIXKMAP)	+= matrix-keymap.o
+obj-$(CONFIG_INPUT_VIVALDIFMAP)	+= vivaldi-fmap.o
+
+obj-$(CONFIG_INPUT_LEDS)	+= input-leds.o
+obj-$(CONFIG_INPUT_MOUSEDEV)	+= mousedev.o
+obj-$(CONFIG_INPUT_JOYDEV)	+= joydev.o
+obj-$(CONFIG_INPUT_EVDEV)	+= evdev.o
+
+obj-$(CONFIG_INPUT_KEYBOARD)	+= keyboard/
+obj-$(CONFIG_INPUT_MOUSE)	+= mouse/
+obj-$(CONFIG_INPUT_JOYSTICK)	+= joystick/
+obj-$(CONFIG_INPUT_TABLET)	+= tablet/
+obj-$(CONFIG_INPUT_TOUCHSCREEN)	+= touchscreen/
+obj-$(CONFIG_INPUT_MISC)	+= misc/
+obj-$(CONFIG_INPUT_KUNIT_TEST)	+= tests/
+
+obj-$(CONFIG_INPUT_APMPOWER)	+= apm-power.o
+
+obj-$(CONFIG_RMI4_CORE)		+= rmi4/