blaster4385/linux-IllusionX - Linux kernel with personal config changes for arch linux

Age	Commit message (Collapse)	Author	Files	Lines
2020-06-17	maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault	Christoph Hellwig	1	-2/+2
	Better describe what these functions do. Suggested-by: Linus Torvalds <[email protected]> Signed-off-by: Christoph Hellwig <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2020-06-09	riscv: fix build warning of missing prototypes	Zong Li	1	-0/+1
	Add the missing header in file, it was lost in original implementation. The warning message as follows: - no previous prototype for 'patch_text_nosync' [-Wmissing-prototypes] - no previous prototype for 'patch_text' [-Wmissing-prototypes] Changed in v2: - Correct the typo of commit message. Signed-off-by: Zong Li <[email protected]> Reported-by: kbuild test robot <[email protected]> Reviewed-by: Atish Patra <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-05-18	riscv: Use text_mutex instead of patch_lock	Zong Li	1	-6/+7
	We don't need the additional lock protection when patching the text. There are two patching interfaces here: - patch_text: patch code and always synchronize with stop_machine() - patch_text_nosync: patch code without synchronization, it's caller's responsibility to synchronize all CPUs if needed. For the first one, stop_machine() is protected by its own mutex, and also the irq is already disabled here. For the second one, in risc-v real case now, it would be used to ftrace patching the mcount function, since it already running under kstop_machine(), no other thread will run, so we could use text_mutex on ftrace side. Signed-off-by: Zong Li <[email protected]> Reviewed-by: Masami Hiramatsu <[email protected]> Reviewed-by: Palmer Dabbelt <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-05-18	riscv: Use NOKPROBE_SYMBOL() instead of __krpobes annotation	Zong Li	1	-7/+14
	The __kprobes annotation is old style, so change it to NOKPROBE_SYMBOL(). Signed-off-by: Zong Li <[email protected]> Reviewed-by: Masami Hiramatsu <[email protected]> Reviewed-by: Palmer Dabbelt <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-05-18	riscv: Remove the 'riscv_' prefix of function name	Zong Li	1	-11/+11
	Refactor the function name by removing the 'riscv_' prefix, it would be better unless it could mix up with arch-independent functions. Signed-off-by: Zong Li <[email protected]> Reviewed-by: Masami Hiramatsu <[email protected]> Reviewed-by: Palmer Dabbelt <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>
2020-03-26	riscv: introduce interfaces to patch kernel code	Zong Li	1	-0/+120
	On strict kernel memory permission, we couldn't patch code without writable permission. Preserve two holes in fixmap area, so we can map the kernel code temporarily to fixmap area, then patch the instructions. We need two pages here because we support the compressed instruction, so the instruction might be align to 2 bytes. When patching the 32-bit length instruction which is 2 bytes alignment, it will across two pages. Introduce two interfaces to patch kernel code: riscv_patch_text_nosync: - patch code without synchronization, it's caller's responsibility to synchronize all CPUs if needed. riscv_patch_text: - patch code and always synchronize with stop_machine() Signed-off-by: Zong Li <[email protected]> Signed-off-by: Palmer Dabbelt <[email protected]>