linux/arch/riscv
Andy Chiu 1fd96a3e9d
riscv: Add prctl controls for userspace vector management
This patch add two riscv-specific prctls, to allow usespace control the
use of vector unit:

 * PR_RISCV_V_SET_CONTROL: control the permission to use Vector at next,
   or all following execve for a thread. Turning off a thread's Vector
   live is not possible since libraries may have registered ifunc that
   may execute Vector instructions.
 * PR_RISCV_V_GET_CONTROL: get the same permission setting for the
   current thread, and the setting for following execve(s).

Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Greentime Hu <greentime.hu@sifive.com>
Reviewed-by: Vincent Chen <vincent.chen@sifive.com>
Link: https://lore.kernel.org/r/20230605110724.21391-22-andy.chiu@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-06-08 07:16:53 -07:00
..
boot RISC-V Patches for the 6.4 Merge Window, Part 1 2023-04-28 16:55:39 -07:00
configs Remove orphaned CONFIG_PRINTK_SAFE_LOG_BUF_SHIFT 2023-03-27 13:12:09 +02:00
errata RISC-V: fix sifive and thead section mismatches in errata 2023-04-29 13:18:19 -07:00
include riscv: Add prctl controls for userspace vector management 2023-06-08 07:16:53 -07:00
kernel riscv: Add prctl controls for userspace vector management 2023-06-08 07:16:53 -07:00
kvm riscv: Add prctl controls for userspace vector management 2023-06-08 07:16:53 -07:00
lib riscv: Allow to downgrade paging mode from the command line 2023-04-26 07:30:52 -07:00
mm riscv: mm: remove redundant parameter of create_fdt_early_page_table 2023-04-29 13:03:01 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-09 22:22:11 -08:00
purgatory purgatory: fix disabling debug info 2023-04-08 19:36:53 +09:00
tools riscv: Check relocations at compile time 2023-04-19 07:46:32 -07:00
Kbuild riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild 2022-06-01 22:26:32 -07:00
Kconfig RISC-V Patches for the 6.4 Merge Window, Part 2 2023-05-05 12:23:33 -07:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.errata Merge patch series "RISC-V: Fixes for riscv_has_extension[un]likely()'s alternative dependency" 2023-03-29 12:26:38 -07:00
Kconfig.socs RISC-V Patches for the 6.3 Merge Window, Part 1 2023-02-25 11:14:08 -08:00
Makefile RISC-V Patches for the 6.4 Merge Window, Part 1 2023-04-28 16:55:39 -07:00
Makefile.postlink riscv: Use --emit-relocs in order to move .rela.dyn in init 2023-04-19 07:46:33 -07:00