# git rev-parse -q --verify c6ac667b07996929835b512de0e9a988977e6abc^{commit} c6ac667b07996929835b512de0e9a988977e6abc already have revision, skipping fetch # git checkout -q -f -B kisskb c6ac667b07996929835b512de0e9a988977e6abc # git clean -qxdf # < git log -1 # commit c6ac667b07996929835b512de0e9a988977e6abc # Author: Nicholas Piggin # Date: Fri May 14 14:40:08 2021 +1000 # # powerpc/64e/interrupt: Fix nvgprs being clobbered # # Some interrupt handlers have an "extra" that saves 1 or 2 # registers (r14, r15) in the paca save area and makes them available to # use by the handler. # # The change to always save nvgprs in exception handlers lead to some # interrupt handlers saving those scratch r14 / r15 registers into the # interrupt frame's GPR saves, which get restored on interrupt exit. # # Fix this by always reloading those scratch registers from paca before # the EXCEPTION_COMMON that saves nvgprs. # # Fixes: 4228b2c3d20e ("powerpc/64e/interrupt: always save nvgprs on interrupt") # Reported-by: Christian Zigotzky # Signed-off-by: Nicholas Piggin # Tested-by: Christian Zigotzky # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20210514044008.1955783-1-npiggin@gmail.com # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 c6ac667b07996929835b512de0e9a988977e6abc # < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_acadia_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- 40x/acadia_defconfig # < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_acadia_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_acadia_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_acadia_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x570ff0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.13.0-rc1-gc6ac667b0799 Created: Sun May 16 10:02:53 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2747768 Bytes = 2683.37 KiB = 2.62 MiB Load Address: 00600000 Entry Point: 006017dc Completed OK # rm -rf /kisskb/build/powerpc-fixes_40x_acadia_defconfig_powerpc-gcc5 # Build took: 0:00:52.325124