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| author | Fuad Tabba <fuad.tabba@linux.dev> | 2026-09-22 19:14:30 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2026-09-23 12:34:30 +0000 |
| commit | 2bc6b218717b9d08f466f88209251d54bc09b207 (patch) | |
| tree | cb91c941eccb15f94cbec4e96aa3a9c8736b5d66 /drivers/target/Makefile | |
| download | linux-stable-2bc6b218717b9d08f466f88209251d54bc09b207.tar.gz linux-stable-2bc6b218717b9d08f466f88209251d54bc09b207.zip | |
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>
Diffstat (limited to 'drivers/target/Makefile')
| -rw-r--r-- | drivers/target/Makefile | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/target/Makefile b/drivers/target/Makefile new file mode 100644 index 000000000..431b84abf --- /dev/null +++ b/drivers/target/Makefile @@ -0,0 +1,33 @@ +# SPDX-License-Identifier: GPL-2.0 + +target_core_mod-y := target_core_configfs.o \ + target_core_device.o \ + target_core_fabric_configfs.o \ + target_core_fabric_lib.o \ + target_core_hba.o \ + target_core_pr.o \ + target_core_alua.o \ + target_core_tmr.o \ + target_core_tpg.o \ + target_core_transport.o \ + target_core_sbc.o \ + target_core_spc.o \ + target_core_ua.o \ + target_core_rd.o \ + target_core_stat.o \ + target_core_xcopy.o + +obj-$(CONFIG_TARGET_CORE) += target_core_mod.o + +# Subsystem modules +obj-$(CONFIG_TCM_IBLOCK) += target_core_iblock.o +obj-$(CONFIG_TCM_FILEIO) += target_core_file.o +obj-$(CONFIG_TCM_PSCSI) += target_core_pscsi.o +obj-$(CONFIG_TCM_USER2) += target_core_user.o + +# Fabric modules +obj-$(CONFIG_LOOPBACK_TARGET) += loopback/ +obj-$(CONFIG_TCM_FC) += tcm_fc/ +obj-$(CONFIG_ISCSI_TARGET) += iscsi/ +obj-$(CONFIG_SBP_TARGET) += sbp/ +obj-$(CONFIG_REMOTE_TARGET) += tcm_remote/ |