linux-kernel - Re: [PATCH] iommu/arm-smmu-v3: Fix L1 stream table index calculation for AmpereOne

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241001210200.GC1369530@ziepe.ca>
Date: Tue, 1 Oct 2024 18:02:00 -0300
From: Jason Gunthorpe <jgg@...pe.ca>
To: Yang Shi <yang@...amperecomputing.com>
Cc: Nicolin Chen <nicolinc@...dia.com>, will@...nel.org,
	robin.murphy@....com, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iommu/arm-smmu-v3: Fix L1 stream table index calculation
 for AmpereOne

On Tue, Oct 01, 2024 at 01:47:24PM -0700, Yang Shi wrote:
> diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
> b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
> index 1e9952ca989f..de9f14293485 100644
> --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
> +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
> @@ -235,6 +235,11 @@ static inline u32 arm_smmu_strtab_l2_idx(u32 sid)
>         return sid % STRTAB_NUM_L2_STES;
>  }
> 
> +static inline unsigned int arm_smmu_strtab_max_sid(unsigned int sid_bits)
> +{

Can we take the smmu struct here instead of the int?

But yes, this looks OK

Jason