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, 27 insertions, 0 deletions

diff --git a/drivers/pinctrl/intel/Makefile b/drivers/pinctrl/intel/Makefile
new file mode 100644
index 000000000..d0d868c9a
--- /dev/null
+++ b/drivers/pinctrl/intel/Makefile
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+# Intel pin control drivers
+
+obj-$(CONFIG_PINCTRL_BAYTRAIL)		+= pinctrl-baytrail.o
+obj-$(CONFIG_PINCTRL_CHERRYVIEW)	+= pinctrl-cherryview.o
+obj-$(CONFIG_PINCTRL_LYNXPOINT)		+= pinctrl-lynxpoint.o
+obj-$(CONFIG_PINCTRL_TANGIER)		+= pinctrl-tangier.o
+obj-$(CONFIG_PINCTRL_MERRIFIELD)	+= pinctrl-merrifield.o
+obj-$(CONFIG_PINCTRL_MOOREFIELD)	+= pinctrl-moorefield.o
+obj-$(CONFIG_PINCTRL_INTEL)		+= pinctrl-intel.o
+obj-$(CONFIG_PINCTRL_INTEL_PLATFORM)	+= pinctrl-intel-platform.o
+obj-$(CONFIG_PINCTRL_ALDERLAKE)		+= pinctrl-alderlake.o
+obj-$(CONFIG_PINCTRL_BROXTON)		+= pinctrl-broxton.o
+obj-$(CONFIG_PINCTRL_CANNONLAKE)	+= pinctrl-cannonlake.o
+obj-$(CONFIG_PINCTRL_CEDARFORK)		+= pinctrl-cedarfork.o
+obj-$(CONFIG_PINCTRL_DENVERTON)		+= pinctrl-denverton.o
+obj-$(CONFIG_PINCTRL_ELKHARTLAKE)	+= pinctrl-elkhartlake.o
+obj-$(CONFIG_PINCTRL_EMMITSBURG)	+= pinctrl-emmitsburg.o
+obj-$(CONFIG_PINCTRL_GEMINILAKE)	+= pinctrl-geminilake.o
+obj-$(CONFIG_PINCTRL_ICELAKE)		+= pinctrl-icelake.o
+obj-$(CONFIG_PINCTRL_JASPERLAKE)	+= pinctrl-jasperlake.o
+obj-$(CONFIG_PINCTRL_LAKEFIELD)		+= pinctrl-lakefield.o
+obj-$(CONFIG_PINCTRL_LEWISBURG)		+= pinctrl-lewisburg.o
+obj-$(CONFIG_PINCTRL_METEORLAKE)	+= pinctrl-meteorlake.o
+obj-$(CONFIG_PINCTRL_METEORPOINT)	+= pinctrl-meteorpoint.o
+obj-$(CONFIG_PINCTRL_SUNRISEPOINT)	+= pinctrl-sunrisepoint.o
+obj-$(CONFIG_PINCTRL_TIGERLAKE)		+= pinctrl-tigerlake.o