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5d17d4ed7 |
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04-Oct-2021 |
Sven Schnelle <svens@linux.ibm.com> |
s390: introduce nospec_uses_trampoline() and replace all of the "__is_defined(CC_USING_EXPOLINE) && !nospec_disable" occurrences. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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17e89e13 |
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05-May-2021 |
Sven Schnelle <svens@linux.ibm.com> |
s390/facilities: move stfl information from lowcore to global data With gcc-11, there are a lot of warnings because the facility functions are accessing lowcore through a null pointer. Fix this by moving the facility arrays away from lowcore. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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475c8e9e |
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09-Apr-2019 |
Joe Perches <joe@perches.com> |
s390: Convert IS_ENABLED uses to __is_defined IS_ENABLED should be reserved for CONFIG_<FOO> uses so convert the uses of IS_ENABLED with a #define to __is_defined. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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aeaf7002 |
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08-May-2018 |
Martin Schwidefsky <schwidefsky@de.ibm.com> |
s390: detect etoken facility Detect and report the etoken facility. With spectre_v2=auto or CONFIG_EXPOLINE_AUTO=y automatically disable expolines and use the full branch prediction mode for the kernel. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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4253b0e0 |
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24-Apr-2018 |
Martin Schwidefsky <schwidefsky@de.ibm.com> |
s390: move spectre sysfs attribute code The nospec-branch.c file is compiled without the gcc options to generate expoline thunks. The return branch of the sysfs show functions cpu_show_spectre_v1 and cpu_show_spectre_v2 is an indirect branch as well. These need to be compiled with expolines. Move the sysfs functions for spectre reporting to a separate file and loose an '.' for one of the messages. Cc: stable@vger.kernel.org # 4.16 Fixes: d424986f1d ("s390: add sysfs attributes for spectre") Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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