wireguard-linux/arch/x86/include/asm/entry-common.h, branch jd/orphan-parallel

x86/entry: Fix AC assertion

2020-09-04T13:09:29Z

The WARN added in commit 3c73b81a9164 ("x86/entry, selftests: Further improve user entry sanity checks") unconditionally triggers on a IVB machine because it does not support SMAP. For !SMAP hardware the CLAC/STAC instructions are patched out and thus if userspace sets AC, it is still have set after entry. Fixes: 3c73b81a9164 ("x86/entry, selftests: Further improve user entry sanity checks") Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Thomas Gleixner Tested-by: Daniel Thompson Acked-by: Andy Lutomirski Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200902133200.666781610@infradead.org

x86/entry: Use generic syscall exit functionality

2020-07-24T13:04:59Z

Replace the x86 variant with the generic version. Provide the relevant architecture specific helper functions and defines. Use a temporary define for idtentry_exit_user which will be cleaned up seperately. Signed-off-by: Thomas Gleixner Acked-by: Kees Cook Link: https://lkml.kernel.org/r/20200722220520.494648601@linutronix.de

x86/entry: Use generic syscall entry function

2020-07-24T13:04:59Z

Replace the syscall entry work handling with the generic version. Provide the necessary helper inlines to handle the real architecture specific parts, e.g. ptrace. Use a temporary define for idtentry_enter_user which will be cleaned up seperately. Signed-off-by: Thomas Gleixner Reviewed-by: Kees Cook Link: https://lkml.kernel.org/r/20200722220520.376213694@linutronix.de