Re: [PATCH v2] hwrng: add Zhaoxin rng driver base on rep_xstore instruction

From: LeoLiu-oc
Date: Fri Nov 17 2023 - 06:19:31 EST




在 2023/11/17 18:35, Herbert Xu 写道:
On Wed, Nov 08, 2023 at 03:34:54PM +0800, LeoLiu-oc wrote:
From: LeoLiuoc <LeoLiu-oc@xxxxxxxxxxx>

Add support for Zhaoxin hardware random number generator.
This driver base on rep_xstore instruction and uses the same
X86_FEATURE_XSTORE as via-rng driver. Therefore, modify the x86_cpu_id
array in the via-rng driver, so that the corresponding driver can be
correctly loader on respective platforms.

---

v1 -> v2:
1. Fix assembler code errors
2. Remove redundant CPU model check codes

Signed-off-by: LeoLiuoc <LeoLiu-oc@xxxxxxxxxxx>
---
drivers/char/hw_random/Kconfig | 13 ++++
drivers/char/hw_random/Makefile | 1 +
drivers/char/hw_random/via-rng.c | 23 +++----
drivers/char/hw_random/zhaoxin-rng.c | 95 ++++++++++++++++++++++++++++
4 files changed, 119 insertions(+), 13 deletions(-)
create mode 100644 drivers/char/hw_random/zhaoxin-rng.c

Please cc x86@xxxxxxxxxxxxxxx as the same comments to the other
zhaoxin driver seems to be applicable here.

Thanks,

Okay, Will re-send v2 add cc x86@xxxxxxxxxxxxxxx.


Best Regards
Leoliu-oc