f04cf78bbf
Instead of special-casing the specific case of shared registers, create a default SYSCALL_RET_SET() macro (mirroring SYSCALL_NUM_SET()), that writes to the SYSCALL_RET register. For architectures that can't set the return value (for whatever reason), they can define SYSCALL_RET_SET() without an associated SYSCALL_RET() macro. This also paves the way for architectures that need to do special things to set the return value (e.g. powerpc). Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/lkml/20200912110820.597135-12-keescook@chromium.org Acked-by: Christian Brauner <christian.brauner@ubuntu.com> |
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