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/parisc/Makefile b/drivers/parisc/Makefile
new file mode 100644
index 000000000..69860a60b
--- /dev/null
+++ b/drivers/parisc/Makefile
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile PCI and non-PCI devices in PA-RISC machines
+#
+# Keep the order below, e.g.
+# - ccio before any potential subdevices
+# - gsc is required before lasi and wax
+# - asp and wax before the EISA adapters for the IRQ regions
+# - EISA must come before PCI to be sure it gets IRQ region
+#
+
+obj-$(CONFIG_IOSAPIC)		+= iosapic.o
+obj-$(CONFIG_IOMMU_SBA)		+= sba_iommu.o
+obj-$(CONFIG_PCI_LBA)		+= lba_pci.o
+obj-$(CONFIG_IOMMU_CCIO)	+= ccio-dma.o
+
+obj-$(CONFIG_GSC)		+= gsc.o
+obj-$(CONFIG_GSC_LASI)		+= lasi.o asp.o
+obj-$(CONFIG_GSC_WAX)		+= wax.o
+obj-$(CONFIG_EISA)		+= eisa.o eisa_enumerator.o eisa_eeprom.o
+obj-$(CONFIG_HPPB)		+= hppb.o
+obj-$(CONFIG_GSC_DINO)		+= dino.o
+
+obj-$(CONFIG_SUPERIO)		+= superio.o
+obj-$(CONFIG_CHASSIS_LCD_LED)	+= led.o
+obj-$(CONFIG_PDC_STABLE)	+= pdc_stable.o
+obj-y				+= power.o