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/tty/vt/Makefile | 65 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 drivers/tty/vt/Makefile (limited to 'drivers/tty/vt/Makefile') diff --git a/drivers/tty/vt/Makefile b/drivers/tty/vt/Makefile new file mode 100644 index 000000000..ae746dcde --- /dev/null +++ b/drivers/tty/vt/Makefile @@ -0,0 +1,65 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# This file contains the font map for the default (hardware) font +# +FONTMAPFILE = cp437.uni + +obj-$(CONFIG_VT) += vt_ioctl.o vc_screen.o \ + selection.o keyboard.o \ + vt.o defkeymap.o +obj-$(CONFIG_CONSOLE_TRANSLATIONS) += consolemap.o consolemap_deftbl.o \ + ucs.o + +# Files generated that shall be removed upon make clean +clean-files := consolemap_deftbl.c defkeymap.c \ + ucs_width_table.h ucs_recompose_table.h ucs_fallback_table.h + +hostprogs += conmakehash + +quiet_cmd_conmk = CONMK $@ + cmd_conmk = $(obj)/conmakehash $< > $@ + +$(obj)/consolemap_deftbl.c: $(src)/$(FONTMAPFILE) $(obj)/conmakehash + $(call cmd,conmk) + +$(obj)/defkeymap.o: $(obj)/defkeymap.c + +# Uncomment if you're changing the keymap and have an appropriate +# loadkeys version for the map. By default, we'll use the shipped +# versions. +# GENERATE_KEYMAP := 1 + +ifdef GENERATE_KEYMAP + +$(obj)/defkeymap.c: $(obj)/%.c: $(src)/%.map + loadkeys --mktable --unicode $< > $@ + +endif + +$(obj)/ucs.o: $(src)/ucs.c $(obj)/ucs_width_table.h \ + $(obj)/ucs_recompose_table.h $(obj)/ucs_fallback_table.h + +# You may uncomment one of those to have the UCS tables be regenerated +# during the build process. By default the _shipped versions are used. +# +#GENERATE_UCS_TABLES := 1 +#GENERATE_UCS_TABLES := 2 # invokes gen_ucs_recompose_table.py with --full + +ifdef GENERATE_UCS_TABLES + +$(obj)/ucs_width_table.h: $(src)/gen_ucs_width_table.py + $(PYTHON3) $< -o $@ + +ifeq ($(GENERATE_UCS_TABLES),2) +gen_recomp_arg := --full +else +gen_recomp_arg := +endif + +$(obj)/ucs_recompose_table.h: $(src)/gen_ucs_recompose_table.py + $(PYTHON3) $< -o $@ $(gen_recomp_arg) + +$(obj)/ucs_fallback_table.h: $(src)/gen_ucs_fallback_table.py + $(PYTHON3) $< -o $@ + +endif -- cgit v1.3.1