Changes in arch.h

d1d7f01f - um: mark rodata read-only and implement _nofault accesses

Mon, 10 Feb 2025 16:09:25 +0000

um: mark rodata read-only and implement _nofault accessesMark read-only data actually read-only (simple mprotect), andto be able to test it also implement _nofault accesses. Thisworks by setting up a new "segv_continue" pointer in current,and then when we hit a segfault we change the signal returncontext so that we continue at that address. The code usingthis sets it up so that it jumps to a label and then abortsthe access that way, returning -EFAULT.It's possible to optimize the ___backtrack_faulted() thing byusing asm goto (compiler version dependent) and/or gcc's (notsure if clang has it) &&label extension, but at least in oneattempt I made the && caused the compiler to not load -EFAULTinto the register in case of jumping to the &&label from thefault handler. So leave it like this for now.Signed-off-by: Johannes Berg Co-developed-by: Benjamin Berg Signed-off-by: Benjamin Berg Link: https://patch.msgid.link/20250210160926.420133-2-benjamin@sipsolutions.netSigned-off-by: Johannes Berg List of files: /linux-6.15/arch/um/include/shared/arch.h

f2f4bf5a - um: Add SPDX headers for files in arch/um/include

Sun, 25 Aug 2019 09:49:19 +0000

um: Add SPDX headers for files in arch/um/includeConvert files to use SPDX header. All files are licensed under the GPLv2.Signed-off-by: Alex Dewar Signed-off-by: Richard Weinberger List of files: /linux-6.15/arch/um/include/shared/arch.h

37185b33 - um: get rid of pointless include "..." where include <...> will do

Mon, 08 Oct 2012 02:27:32 +0000

um: get rid of pointless include "..." where include <...> will doSigned-off-by: Al Viro Signed-off-by: Richard Weinberger List of files: /linux-6.15/arch/um/include/shared/arch.h

8569c914 - x86, um: take arch/um/include/* out of the way

Sun, 17 Aug 2008 17:48:37 +0000

x86, um: take arch/um/include/* out of the wayWe can't just plop asm/* into it - userland helpers are built with itin search path and seeing asm/* show up there suddenly would be a badidea.Signed-off-by: Al Viro Signed-off-by: H. Peter Anvin List of files: /linux-6.15/arch/um/include/shared/arch.h