From 2bc6b218717b9d08f466f88209251d54bc09b207 Mon Sep 17 00:00:00 2001 From: Fuad Tabba Date: Tue, 22 Sep 2026 19:14:30 +0100 Subject: arm64/boot: Disable trapping of PMZR_EL0 writes to EL2 __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 Reviewed-by: Anshuman Khandual Reviewed-by: Oliver Upton Signed-off-by: Will Deacon --- drivers/firewire/Makefile | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 drivers/firewire/Makefile (limited to 'drivers/firewire/Makefile') diff --git a/drivers/firewire/Makefile b/drivers/firewire/Makefile new file mode 100644 index 000000000..1ff550e93 --- /dev/null +++ b/drivers/firewire/Makefile @@ -0,0 +1,22 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for the Linux IEEE 1394 implementation +# + +firewire-core-y += core-trace.o core-card.o core-cdev.o core-device.o \ + core-iso.o core-topology.o core-transaction.o +firewire-ohci-y += ohci.o +firewire-sbp2-y += sbp2.o +firewire-net-y += net.o + +obj-$(CONFIG_FIREWIRE) += firewire-core.o +obj-$(CONFIG_FIREWIRE_OHCI) += firewire-ohci.o +obj-$(CONFIG_FIREWIRE_SBP2) += firewire-sbp2.o +obj-$(CONFIG_FIREWIRE_NET) += firewire-net.o +obj-$(CONFIG_FIREWIRE_NOSY) += nosy.o +obj-$(CONFIG_PROVIDE_OHCI1394_DMA_INIT) += init_ohci1394_dma.o + +obj-$(CONFIG_FIREWIRE_KUNIT_UAPI_TEST) += uapi-test.o +obj-$(CONFIG_FIREWIRE_KUNIT_PACKET_SERDES_TEST) += packet-serdes-test.o +obj-$(CONFIG_FIREWIRE_KUNIT_SELF_ID_SEQUENCE_HELPER_TEST) += self-id-sequence-helper-test.o +obj-$(CONFIG_FIREWIRE_KUNIT_OHCI_SERDES_TEST) += ohci-serdes-test.o -- cgit v1.3.1