kernel.git/arch/riscv/kernel/process.c, branch linux-5.0.y

Auto-detect whether a FPU exists

2018-10-23T00:02:23Z

We expect that a kernel with CONFIG_FPU=y can still support no-FPU machines. To do so, the kernel should first examine the existence of a FPU, then do nothing if a FPU does exist; otherwise, it should disable/bypass all FPU-related functions. In this patch, a new global variable, has_fpu, is created and determined when parsing the hardware capability from device tree during booting. This variable is used in those FPU-related functions. Signed-off-by: Alan Kao Cc: Greentime Hu Cc: Vincent Chen Cc: Zong Li Cc: Nick Hu Signed-off-by: Palmer Dabbelt

Allow to disable FPU support

2018-10-23T00:02:23Z

FPU codes have been separated from common part in previous patches. This patch add the CONFIG_FPU option and some stubs, so that a no-FPU configuration is allowed. Signed-off-by: Alan Kao Cc: Greentime Hu Cc: Vincent Chen Cc: Zong Li Cc: Nick Hu Reviewed-by: Christoph Hellwig Signed-off-by: Palmer Dabbelt

Merge branch 'work.whack-a-mole' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2018-02-01T03:18:12Z

Pull asm/uaccess.h whack-a-mole from Al Viro: "It's linux/uaccess.h, damnit... Oh, well - eventually they'll stop cropping up..." * 'work.whack-a-mole' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: asm-prototypes.h: use linux/uaccess.h, not asm/uaccess.h riscv: use linux/uaccess.h, not asm/uaccess.h... ppc: for put_user() pull linux/uaccess.h, not asm/uaccess.h

riscv: rename SR_* constants to match the spec

2018-01-07T23:14:39Z

Signed-off-by: Christoph Hellwig Signed-off-by: Palmer Dabbelt

riscv: use linux/uaccess.h, not asm/uaccess.h...

2017-12-04T23:01:01Z

Signed-off-by: Al Viro

RISC-V: Task implementation

2017-09-26T22:26:46Z

This patch contains the implementation of tasks on RISC-V, most of which is involved in task switching. Signed-off-by: Palmer Dabbelt