linux-kernel - Re: [PATCH v4 5/6] x86/sgx: Hook sgx_memory

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Message-ID: <681d530d72de842c8bf43733c11f3c3f2ebf8c6e.camel@kernel.org>
Date:   Fri, 03 Sep 2021 09:56:00 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Tony Luck <tony.luck@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Dave Hansen <dave.hansen@...el.com>
Cc:     Cathy Zhang <cathy.zhang@...el.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 5/6] x86/sgx: Hook sgx_memory_failure() into mainline
 code

On Fri, 2021-09-03 at 09:12 +0300, Jarkko Sakkinen wrote:
> On Fri, 2021-08-27 at 12:55 -0700, Tony Luck wrote:
> > +#ifdef CONFIG_X86_SGX
> > +int sgx_memory_failure(unsigned long pfn, int flags);
> > +bool sgx_is_epc_page(u64 paddr);
> > +#else
> > +static inline int sgx_memory_failure(unsigned long pfn, int flags)
> > +{
> > +	return -ENXIO;
> > +}
> > +
> > +static inline bool sgx_is_epc_page(u64 paddr)
> > +{
> > +	return false;
> > +}
> > +#endif
> 
> These decl's should be in arch/x86/include/asm/sgx.h, and as part of
> patch that contains the implementations.

To align with this, I wrote a small patch:

https://lore.kernel.org/linux-sgx/20210903064156.387979-1-jarkko@kernel.org/T/#u

/Jarkko