[PATCH v4 1/4] RISC-V: Fix compilation without RISCV_ISA_ZICBOM

[Heiko Stuebner]

Am Mittwoch, 19. Oktober 2022, 15:11:25 CEST schrieb Anup Patel:
> From: Andrew Jones <ajones at ventanamicro.com>
> 
> riscv_cbom_block_size and riscv_init_cbom_blocksize() should always
> be available and riscv_init_cbom_blocksize() should always be
> invoked, even when compiling without RISCV_ISA_ZICBOM enabled. This
> is because disabling RISCV_ISA_ZICBOM means "don't use zicbom
> instructions in the kernel" not "pretend there isn't zicbom, even
> when there is". When zicbom is available, whether the kernel enables
> its use with RISCV_ISA_ZICBOM or not, KVM will offer it to guests.
> Ensure we can build KVM and that the block size is initialized even
> when compiling without RISCV_ISA_ZICBOM.
> 
> Fixes: 8f7e001e0325 ("RISC-V: Clean up the Zicbom block size probing")
> Reported-by: kernel test robot <lkp at intel.com>
> Signed-off-by: Andrew Jones <ajones at ventanamicro.com>
> Signed-off-by: Anup Patel <apatel at ventanamicro.com>
> Reviewed-by: Conor Dooley <conor.dooley at microchip.com>

Reviewed-by: Heiko Stuebner <heiko at sntech.de>

[on qemu+zicbom and t-head d1]
Tested-by: Heiko Stuebner <heiko at sntech.de>