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From: Randy Dunlap <rdunlap@infradead.org>
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
Subject: Re: [PATCH V7 14/18] memremap_pages: Add memremap.pks_fault_mode
Date: Tue, 3 Aug 2021 21:57:31 -0700	[thread overview]
Message-ID: <2bbd7ce2-8d16-8724-5505-96a4731c3c45@infradead.org> (raw)
In-Reply-To: <20210804043231.2655537-15-ira.weiny@intel.com>

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


  reply	other threads:[~2021-08-04  5:01 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-04  4:32 [PATCH V7 00/18] PKS/PMEM: Add Stray Write Protection ira.weiny
2021-08-04  4:32 ` [PATCH V7 01/18] x86/pkeys: Create pkeys_common.h ira.weiny
2021-08-04  4:32 ` [PATCH V7 02/18] x86/fpu: Refactor arch_set_user_pkey_access() ira.weiny
2021-11-25 14:23   ` Thomas Gleixner
2021-08-04  4:32 ` [PATCH V7 03/18] x86/pks: Add additional PKEY helper macros ira.weiny
2021-11-25 14:25   ` Thomas Gleixner
2021-11-25 16:58     ` Thomas Gleixner
2021-12-08  0:51     ` Ira Weiny
2021-12-08 15:11       ` Thomas Gleixner
2021-08-04  4:32 ` [PATCH V7 04/18] x86/pks: Add PKS defines and Kconfig options ira.weiny
2021-08-04  4:32 ` [PATCH V7 05/18] x86/pks: Add PKS setup code ira.weiny
2021-11-25 15:15   ` Thomas Gleixner
2021-11-26  3:11     ` taoyi.ty
2021-11-26  9:57       ` Thomas Gleixner
2021-11-26 11:03     ` Thomas Gleixner
2021-08-04  4:32 ` [PATCH V7 06/18] x86/fault: Adjust WARN_ON for PKey fault ira.weiny
2021-08-04  4:32 ` [PATCH V7 07/18] x86/pks: Preserve the PKRS MSR on context switch ira.weiny
2021-11-25 15:25   ` Thomas Gleixner
2021-08-04  4:32 ` [PATCH V7 08/18] x86/entry: Preserve PKRS MSR across exceptions ira.weiny
2021-11-13  0:50   ` Ira Weiny
2021-11-25 11:19     ` Thomas Gleixner
2021-12-03  1:13     ` Andy Lutomirski
2021-11-25 14:12   ` Thomas Gleixner
2021-12-07  1:54     ` Ira Weiny
2021-12-07  4:45       ` Ira Weiny
2021-12-08  0:21       ` Thomas Gleixner
2021-08-04  4:32 ` [PATCH V7 09/18] x86/pks: Add PKS kernel API ira.weiny
2021-08-04  4:32 ` [PATCH V7 10/18] x86/pks: Introduce pks_abandon_protections() ira.weiny
2021-08-04  4:32 ` [PATCH V7 11/18] x86/pks: Add PKS Test code ira.weiny
2021-08-04  4:32 ` [PATCH V7 12/18] x86/pks: Add PKS fault callbacks ira.weiny
2021-08-11 21:18   ` Edgecombe, Rick P
2021-08-17  3:21     ` Ira Weiny
2021-08-04  4:32 ` [PATCH V7 13/18] memremap_pages: Add access protection via supervisor Protection Keys (PKS) ira.weiny
2021-08-04  4:32 ` [PATCH V7 14/18] memremap_pages: Add memremap.pks_fault_mode ira.weiny
2021-08-04  4:57   ` Randy Dunlap [this message]
2021-08-07 19:32     ` Ira Weiny
2021-08-11 19:01   ` Edgecombe, Rick P
2021-08-17  3:12     ` Ira Weiny
2021-08-04  4:32 ` [PATCH V7 15/18] kmap: Add stray access protection for devmap pages ira.weiny
2021-08-04  4:32 ` [PATCH V7 16/18] dax: Stray access protection for dax_direct_access() ira.weiny
2021-08-04  4:32 ` [PATCH V7 17/18] nvdimm/pmem: Enable stray access protection ira.weiny
2021-08-04  4:32 ` [PATCH V7 18/18] devdax: " ira.weiny

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