Andrew Jones fb0ff0a95d RISC-V: Introduce riscv_isa_extension_check ... Currently any isa extension found in the isa string is set in the isa bitmap. An isa extension set in the bitmap indicates that the extension is present and may be used (a.k.a is enabled). However, when an extension cannot be used due to missing dependencies or errata it should not be added to the bitmap. Introduce a function where additional checks may be placed in order to determine if an extension should be enabled or not. Note, the checks may simply indicate an issue with the DT, but, since extensions may be used in early boot, it's not always possible to simply produce an error at the point the issue is determined. It's best to keep the extension disabled and produce an error. No functional change intended, as the function is only introduced and always returns true. A later patch will provide checks for an isa extension. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Link: https://lore.kernel.org/r/20221129143447.49714-3-ajones@ventanamicro.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2022-12-09 19:09:09 -08:00
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boot	RISC-V Patches for the 6.1 Merge Window, Part 2	2022-10-14 11:21:11 -07:00
configs	riscv: enable CD-ROM file systems in defconfig	2022-08-25 17:01:09 -07:00
errata	Merge patch series "Some style cleanups for recent extension additions"	2022-10-13 08:46:31 -07:00
include	RISC-V: Fix compilation without RISCV_ISA_ZICBOM	2022-10-21 11:52:39 +05:30
kernel	RISC-V: Introduce riscv_isa_extension_check	2022-12-09 19:09:09 -08:00
kvm	The first batch of KVM patches, mostly covering x86, which I	2022-10-09 09:39:55 -07:00
lib	riscv: lib: uaccess: fix CSR_STATUS SR_SUM bit	2022-08-10 14:06:31 -07:00
mm	RISC-V: Fix compilation without RISCV_ISA_ZICBOM	2022-10-21 11:52:39 +05:30
net	bpf, riscv: Support riscv jit to provide bpf_line_info	2022-06-02 16:26:01 -07:00
purgatory	riscv/purgatory: Omit use of bin2c	2022-08-11 09:32:34 -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 6.1 Merge Window, Part 2	2022-10-14 11:21:11 -07:00
Kconfig.debug
Kconfig.erratas	riscv: make t-head erratas depend on MMU	2022-09-17 01:48:22 -07:00
Kconfig.socs	riscv: Kconfig: Style cleanups	2022-06-30 19:26:16 -07:00
Makefile	RISC-V Patches for the 6.1 Merge Window, Part 2	2022-10-14 11:21:11 -07:00