# git rev-parse -q --verify e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa^{commit} e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa already have revision, skipping fetch # git checkout -q -f -B kisskb e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa # git clean -qxdf # < git log -1 # commit e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa # Author: Nicholas Piggin # Date: Sat Jun 22 08:55:54 2019 +1000 # # powerpc/64s/exception: Fix machine check early corrupting AMR # # The early machine check runs in real mode, so locking is unnecessary. # Worse, the windup does not restore AMR, so this can result in a false # KUAP fault after a recoverable machine check hits inside a user copy # operation. # # Fix this similarly to HMI by just avoiding the kuap lock in the # early machine check handler (it will be set by the late handler that # runs in virtual mode if that runs). If the virtual mode handler is # reached, it will lock and restore the AMR. # # Fixes: 890274c2dc4c0 ("powerpc/64s: Implement KUAP for Radix MMU") # Cc: Russell Currey # Signed-off-by: Nicholas Piggin # Signed-off-by: Michael Ellerman # < /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 e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa # < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8555_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- 85xx/tqm8555_defconfig # make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8555_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x4ea6c4) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) INFO: Uncompressed kernel (size 0x4d9f9c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) Image Name: Linux-5.2.0-rc2-ge13e7cd4c0c1 Created: Wed Jun 26 00:20:52 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2518598 Bytes = 2459.57 KiB = 2.40 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.2.0-rc2-ge13e7cd4c0c1 Created: Wed Jun 26 00:20:52 2019 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2548624 Bytes = 2488.89 KiB = 2.43 MiB Load Address: 00500000 Entry Point: 00500314 Completed OK # rm -rf /kisskb/build/powerpc-fixes_85xx_tqm8555_defconfig_powerpc-gcc5 # Build took: 0:00:40.201446