linux-kernel - Re: [PATCH v6 1/7] mseal, system mappings: kernel config and header change

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Message-ID: <dqaqin7elq2og66e2hju42cmwflu6bwag6fn2zzbapcehch4bp@2v5yrconussy>
Date: Mon, 24 Feb 2025 15:13:45 -0500
From: "Liam R. Howlett" <Liam.Howlett@...cle.com>
To: Jeff Xu <jeffxu@...omium.org>
Cc: Dave Hansen <dave.hansen@...el.com>, akpm@...ux-foundation.org,
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Subject: Re: [PATCH v6 1/7] mseal, system mappings: kernel config and header
 change

* Jeff Xu <jeffxu@...omium.org> [250224 14:40]:
> On Mon, Feb 24, 2025 at 11:18 AM Liam R. Howlett
> <Liam.Howlett@...cle.com> wrote:
> >
> > Also, do we need something like the above test for VM_SEALED_SYS?
> >
> Do you mean adding selftest for sealing vdso ? or test the
> VM_SEALED_SYS macro in 32 bit vs 64 bits ?
> 
> CONFIG_MSEAL_SYSTEM_MAPPINGS is by default disabled. I'm not sure
> about the common practice here.
> 
> I also don't know how to detect CONFIG_MSEAL_SYSTEM_MAPPINGS from
> selftest, that is needed for the selftest.


Looking more into this, I think it's fine without anything in there
changing.

Thanks,
Liam