kernel/git/stable/linux.git/arch/s390/lib/expoline, branch master

s390/expoline: Make modules use kernel expolines

2024-04-17T11:38:03+00:00

Currently, kernel modules contain their own set of expoline thunks. In the case of EXPOLINE_EXTERN, this involves postlinking of precompiled expoline.o. expoline.o is also necessary for out-of-source tree module builds. Now that the kernel modules area is less than 4 GB away from kernel expoline thunks, make modules use kernel expolines. Also make EXPOLINE_EXTERN the default if the compiler supports it. This simplifies build and aligns with the approach adopted by other architectures. Signed-off-by: Vasily Gorbik Signed-off-by: Alexander Gordeev

s390/nospec: build expoline.o for modules_prepare target

2022-07-13T13:21:55+00:00

When CONFIG_EXPOLINE_EXTERN is used expoline thunks are generated from arch/s390/lib/expoline.S and postlinked into every module. This is also true for external modules. Add expoline.o build to the modules_prepare target. Fixes: 1d2ad084800e ("s390/nospec: add an option to use thunk-extern") Reported-by: Joe Lawrence Tested-by: Sumanth Korikkar Acked-by: Sumanth Korikkar Tested-by: C. Erastus Toe Tested-by: Joe Lawrence Link: https://lore.kernel.org/r/patch-1.thread-d13b6c.git-a2387a74dc49.your-ad-here.call-01656331067-ext-4899@work.hours Signed-off-by: Vasily Gorbik Signed-off-by: Alexander Gordeev