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Date:   Fri, 15 Apr 2022 12:07:44 -0700
From:   Fenghua Yu <fenghua.yu@intel.com>
To:     "zhangfei.gao@foxmail.com" <zhangfei.gao@foxmail.com>
Cc:     Dave Hansen <dave.hansen@intel.com>,
        Joerg Roedel <joro@8bytes.org>,
        jean-philippe <jean-philippe@linaro.org>,
        Ravi V Shankar <ravi.v.shankar@intel.com>,
        Tony Luck <tony.luck@intel.com>,
        Ashok Raj <ashok.raj@intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        x86 <x86@kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        iommu <iommu@lists.linux-foundation.org>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Andy Lutomirski <luto@kernel.org>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v4 05/11] iommu/sva: Assign a PASID to mm on PASID
 allocation and free it on mm exit
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Hi, Zhangfei,

On Fri, Apr 15, 2022 at 07:52:03PM +0800, zhangfei.gao@foxmail.com wrote:
> > On my X86 machine, nginx doesn't trigger the kernel sva binding function
> > to allocate ioasid. I tried pre- nstalled nginx/openssl and also tried my built
> > a few versions of nginx/openssl. nginx does call OPENSSL_init_ssl() but
> > doesn't go to the binding function. Don't know if it's my configuration issue.
> > Maybe you can give me some advice?
> I am using openssl engine, which use crypto driver and using sva via uacce.
> nginx -> openssl -> openssl engine -> sva related.

uacce is not used on X86. That's why I cannot test IOASID/PASID by nginx
on X86.

I only can test the RFC patch by other test tools via IDXD driver which uses
PASID on X86.

Thanks.

-Fenghua