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Subject: Re: [PATCH V7 14/18] memremap_pages: Add memremap.pks_fault_mode
To:     ira.weiny@intel.com, Dave Hansen <dave.hansen@linux.intel.com>,
        Dan Williams <dan.j.williams@intel.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Fenghua Yu <fenghua.yu@intel.com>,
        Rick Edgecombe <rick.p.edgecombe@intel.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev,
        linux-mm@kvack.org
References: <20210804043231.2655537-1-ira.weiny@intel.com>
 <20210804043231.2655537-15-ira.weiny@intel.com>
From:   Randy Dunlap <rdunlap@infradead.org>
Message-ID: <2bbd7ce2-8d16-8724-5505-96a4731c3c45@infradead.org>
Date:   Tue, 3 Aug 2021 21:57:31 -0700
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On 8/3/21 9:32 PM, ira.weiny@intel.com wrote:
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index bdb22006f713..7902fce7f1da 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -4081,6 +4081,20 @@
>   	pirq=		[SMP,APIC] Manual mp-table setup
>   			See Documentation/x86/i386/IO-APIC.rst.
>   
> +	memremap.pks_fault_mode=	[X86] Control the behavior of page map
> +			protection violations.  Violations may not be an actual
> +			use of the memory but simply an attempt to map it in an
> +			incompatible way.
> +			(depends on CONFIG_DEVMAP_ACCESS_PROTECTION

Missing closing ')' above.

> +
> +			Format: { relaxed | strict }
> +
> +			relaxed - Print a warning, disable the protection and
> +				  continue execution.
> +			strict - Stop kernel execution via BUG_ON or fault
> +
> +			default: relaxed
> +


-- 
~Randy