bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 14:53:58 -04:00
Code Issues Packages Projects Releases Wiki Activity

RISC-V: KVM: Provide UAPI for Zicbop block size

Browse Source 
We're about to allow guests to use the Zicbop extension.
KVM userspace needs to know the cache block size in order to
properly advertise it to the guest. Provide a virtual config
register for userspace to get it with the GET_ONE_REG API, but
setting it cannot be supported, so disallow SET_ONE_REG.

Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn>
Reviewed-by: Nutty Liu <nutty.liu@hotmail.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/befd8403cd76d7adb97231ac993eaeb86bf2582c.1754646071.git.zhouquan@iscas.ac.cn
Signed-off-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Quan Zhou
2025-08-08 18:18:34 +08:00
committed by Anup Patel
parent eca26eadd2
commit 48e2febcda
2 changed files with 15 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/riscv/include/uapi/asm/kvm.h
View File

@@ -56,6 +56,7 @@ struct kvm_riscv_config {
unsigned long mimpid;
unsigned long zicboz_block_size;
unsigned long satp_mode;
unsigned long zicbop_block_size;
};
/* CORE registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */