# git rev-parse -q --verify 9bb162fa26ed76031ed0e7dbc77ccea0bf977758^{commit} 9bb162fa26ed76031ed0e7dbc77ccea0bf977758 already have revision, skipping fetch # git checkout -q -f -B kisskb 9bb162fa26ed76031ed0e7dbc77ccea0bf977758 # git clean -qxdf # < git log -1 # commit 9bb162fa26ed76031ed0e7dbc77ccea0bf977758 # Author: Christophe Leroy # Date: Tue Dec 7 06:10:05 2021 +0000 # # powerpc/603: Fix boot failure with DEBUG_PAGEALLOC and KFENCE # # Allthough kernel text is always mapped with BATs, we still have # inittext mapped with pages, so TLB miss handling is required # when CONFIG_DEBUG_PAGEALLOC or CONFIG_KFENCE is set. # # The final solution should be to set a BAT that also maps inittext # but that BAT then needs to be cleared at end of init, and it will # require more changes to be able to do it properly. # # As DEBUG_PAGEALLOC or KFENCE are debugging, performance is not a big # deal so let's fix it simply for now to enable easy stable application. # # Fixes: 035b19a15a98 ("powerpc/32s: Always map kernel text and rodata with BATs") # Cc: stable@vger.kernel.org # v5.11+ # Reported-by: Maxime Bizon # Signed-off-by: Christophe Leroy # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/aea33b4813a26bdb9378b5f273f00bd5d4abe240.1638857364.git.christophe.leroy@csgroup.eu # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 9bb162fa26ed76031ed0e7dbc77ccea0bf977758 # < make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/x86_64-linux/bin/x86_64-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # < make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 32 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/x86_64-linux/bin/x86_64-linux- vmlinux.o: warning: objtool: __do_fast_syscall_32()+0xa: call to stackleak_track_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: do_syscall_64()+0x9: call to stackleak_track_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: do_int80_syscall_32()+0x9: call to stackleak_track_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: exc_general_protection()+0x22: call to stackleak_track_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: fixup_bad_iret()+0x20: call to stackleak_track_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: mce_start()+0x5c: call to __kasan_check_write() leaves .noinstr.text section vmlinux.o: warning: objtool: mce_gather_info()+0x5f: call to v8086_mode.constprop.0() leaves .noinstr.text section vmlinux.o: warning: objtool: mce_read_aux()+0x8a: call to mca_msr_reg() leaves .noinstr.text section vmlinux.o: warning: objtool: do_machine_check()+0x27: call to stackleak_track_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: mce_severity_amd.constprop.0()+0xca: call to mce_severity_amd_smca() leaves .noinstr.text section vmlinux.o: warning: objtool: .text+0x5342e: call to stackleak_erase() leaves .noinstr.text section vmlinux.o: warning: objtool: .entry.text+0x143: call to stackleak_erase() leaves .noinstr.text section vmlinux.o: warning: objtool: .entry.text+0x10eb: call to stackleak_erase() leaves .noinstr.text section vmlinux.o: warning: objtool: .entry.text+0x17f9: call to stackleak_erase() leaves .noinstr.text section Completed OK # rm -rf /kisskb/build/powerpc-fixes_x86-allmodconfig_x86_64-gcc11 # Build took: 0:37:48.797085