Buildresult: linus/x86_64-defconfig/x86_64-gcc8 built on Sep 23, 08:06

kisskb

Revisions | Branches | Compilers | Configs | Build Results | Build Failures |

Status:	OK
Date/Time:	Sep 23, 08:06
Duration:	0:01:33.306327
Builder:	ka4
Revision:	Merge branch 'address-masking' (`de5cb0dcb74c294ec527eddfe5094acfdb21ff21)`
Target:	linus/x86_64-defconfig/x86_64-gcc8
Branch:	linus
Compiler:	x86_64-gcc8 (x86_64-linux-gcc (GCC) 8.5.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify de5cb0dcb74c294ec527eddfe5094acfdb21ff21^{commit} de5cb0dcb74c294ec527eddfe5094acfdb21ff21 already have revision, skipping fetch # git checkout -q -f -B kisskb de5cb0dcb74c294ec527eddfe5094acfdb21ff21 # git clean -qxdf # < git log -1 # commit de5cb0dcb74c294ec527eddfe5094acfdb21ff21 # Merge: af9c191ac2a0 533ab223aa1a # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Sun Sep 22 11:19:35 2024 -0700 # # Merge branch 'address-masking' # # Merge user access fast validation using address masking. # # This allows architectures to optionally use a data dependent address # masking model instead of a conditional branch for validating user # accesses. That avoids the Spectre-v1 speculation barriers. # # Right now only x86-64 takes advantage of this, and not all architectures # will be able to do it. It requires a guard region between the user and # kernel address spaces (so that you can't overflow from one to the # other), and an easy way to generate a guaranteed-to-fault address for # invalid user pointers. # # Also note that this currently assumes that there is no difference # between user read and write accesses. If extended to architectures like # powerpc, we'll also need to separate out the user read-vs-write cases. # # * address-masking: # x86: make the masked_user_access_begin() macro use its argument only once # x86: do the user address masking outside the user access area # x86: support user address masking instead of non-speculative conditional # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 de5cb0dcb74c294ec527eddfe5094acfdb21ff21 # make -s -j 40 ARCH=x86_64 O=/kisskb/build/linus_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- defconfig # < make -s -j 40 ARCH=x86_64 O=/kisskb/build/linus_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 40 ARCH=x86_64 O=/kisskb/build/linus_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 40 ARCH=x86_64 O=/kisskb/build/linus_defconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/x86_64-linux/bin/x86_64-linux- Completed OK # rm -rf /kisskb/build/linus_defconfig_x86_64-gcc8 # Build took: 0:01:33.306327

© Michael Ellerman 2006-2018.