From: Ben Hutchings <ben@decadent.org.uk>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: akpm@linux-foundation.org, Denis Kirjanov <kda@linux-powerpc.org>,
"Tyler Hicks" <tyhicks@canonical.com>,
"Thomas Gleixner" <tglx@linutronix.de>
Subject: [PATCH 3.16 83/86] Documentation: Correct the possible MDS sysfs values
Date: Thu, 16 May 2019 16:55:33 +0100 [thread overview]
Message-ID: <lsq.1558022133.212257863@decadent.org.uk> (raw)
In-Reply-To: <lsq.1558022132.52852998@decadent.org.uk>
3.16.68-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Tyler Hicks <tyhicks@canonical.com>
commit ea01668f9f43021b28b3f4d5ffad50106a1e1301 upstream.
Adjust the last two rows in the table that display possible values when
MDS mitigation is enabled. They both were slightly innacurate.
In addition, convert the table of possible values and their descriptions
to a list-table. The simple table format uses the top border of equals
signs to determine cell width which resulted in the first column being
far too wide in comparison to the second column that contained the
majority of the text.
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Documentation/hw-vuln/mds.rst | 29 ++++++++++-------------
1 file changed, 13 insertions(+), 16 deletions(-)
--- a/Documentation/hw-vuln/mds.rst
+++ b/Documentation/hw-vuln/mds.rst
@@ -95,22 +95,19 @@ mitigations are active. The relevant sys
The possible values in this file are:
- ========================================= =================================
- 'Not affected' The processor is not vulnerable
+ .. list-table::
- 'Vulnerable' The processor is vulnerable,
- but no mitigation enabled
-
- 'Vulnerable: Clear CPU buffers attempted' The processor is vulnerable but
- microcode is not updated.
- The mitigation is enabled on a
- best effort basis.
- See :ref:`vmwerv`
-
- 'Mitigation: CPU buffer clear' The processor is vulnerable and the
- CPU buffer clearing mitigation is
- enabled.
- ========================================= =================================
+ * - 'Not affected'
+ - The processor is not vulnerable
+ * - 'Vulnerable'
+ - The processor is vulnerable, but no mitigation enabled
+ * - 'Vulnerable: Clear CPU buffers attempted, no microcode'
+ - The processor is vulnerable but microcode is not updated.
+
+ The mitigation is enabled on a best effort basis. See :ref:`vmwerv`
+ * - 'Mitigation: Clear CPU buffers'
+ - The processor is vulnerable and the CPU buffer clearing mitigation is
+ enabled.
If the processor is vulnerable then the following information is appended
to the above information:
next prev parent reply other threads:[~2019-05-16 16:01 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-16 15:55 [PATCH 3.16 00/86] 3.16.68-rc1 review Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 04/86] MIPS: jump_label.c: Correct the span of the J instruction Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 01/86] x86/cpufeature: Add bug flags to /proc/cpuinfo Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 08/86] jump_label: Allow asm/jump_label.h to be included in assembly Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 07/86] s390/jump label: use different nop instruction Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 10/86] module, jump_label: Fix module locking Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 02/86] module: add within_module() function Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 03/86] jump_label: Fix small typos in the documentation Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 09/86] jump_label: Allow jump labels to be used in assembly Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 05/86] MIPS: jump_label.c: Handle the microMIPS J instruction encoding Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 06/86] s390/jump label: add sanity checks Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 75/86] x86/speculation: Move arch_smt_update() call to after mitigation decisions Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 43/86] x86/speculation: Rework SMT state change Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 78/86] x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 68/86] x86/speculation/mds: Conditionally clear CPU buffers on idle entry Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 32/86] x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 63/86] x86/speculation/mds: Add basic bug infrastructure for MDS Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 34/86] x86/speculation: Update the TIF_SSBD comment Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 64/86] x86/speculation/mds: Add BUG_MSBDS_ONLY Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 79/86] cpu/speculation: Add 'mitigations=' cmdline option Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 66/86] x86/speculation/mds: Add mds_clear_cpu_buffers() Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 76/86] x86/speculation/mds: Add SMT warning message Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 21/86] x86/asm: Error out if asm/jump_label.h is included inappropriately Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 51/86] x86/speculation: Avoid __switch_to_xtra() calls Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 45/86] x86/speculation: Mark string arrays const correctly Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 41/86] x86/Kconfig: Select SCHED_SMT if SMP enabled Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 14/86] locking/static_keys: Rework update logic Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 77/86] x86/speculation/mds: Fix comment Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 27/86] x86/speculation: Support Enhanced IBRS on future CPUs Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 38/86] x86/speculation: Disable STIBP when enhanced IBRS is in use Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 31/86] x86/speculation: Apply IBPB more strictly to avoid cross-process data leak Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 33/86] x86/speculation: Propagate information about RSB filling mitigation to sysfs Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 70/86] x86/speculation/l1tf: Document l1tf in sysfs Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 16/86] jump label, locking/static_keys: Update docs Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 81/86] x86/speculation/mds: Add 'mitigations=' support for MDS Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 44/86] x86/speculation: Reorder the spec_v2 code Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 60/86] kvm: x86: Report STIBP on GET_SUPPORTED_CPUID Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 35/86] x86/speculation: Clean up spectre_v2_parse_cmdline() Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 18/86] locking/static_keys: Fix a silly typo Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 80/86] x86/speculation: Support 'mitigations=' cmdline option Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 40/86] x86/speculation: Reorganize speculation control MSRs update Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 30/86] x86/cpu: Sanitize FAM6_ATOM naming Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 58/86] x86/speculation: Add seccomp Spectre v2 user space protection mode Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 39/86] x86/speculation: Rename SSBD update functions Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 50/86] x86/process: Consolidate and simplify switch_to_xtra() code Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 37/86] x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common() Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 82/86] x86/mds: Add MDSUM variant to the MDS documentation Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 36/86] x86/speculation: Remove unnecessary ret variable in cpu_show_common() Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 52/86] x86/speculation: Prepare for conditional IBPB in switch_mm() Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 54/86] x86/speculation: Prepare arch_smt_update() for PRCTL mode Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 69/86] x86/speculation/mds: Add mitigation control for MDS Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 28/86] x86/speculation: Simplify the CPU bug detection logic Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 71/86] x86/speculation/mds: Add sysfs reporting for MDS Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 57/86] x86/speculation: Enable prctl mode for spectre_v2_user Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 86/86] x86/bugs: Change L1TF mitigation string to match upstream Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 59/86] x86/speculation: Provide IBPB always command line options Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 48/86] x86/speculation: Add command line control for indirect branch speculation Ben Hutchings
2019-05-16 15:55 ` Ben Hutchings [this message]
2019-05-16 15:55 ` [PATCH 3.16 23/86] x86/headers: Don't include asm/processor.h in asm/atomic.h Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 22/86] x86/asm: Add asm macros for static keys/jump labels Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 29/86] x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 74/86] Documentation: Add MDS vulnerability documentation Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 24/86] x86/cpufeature: Carve out X86_FEATURE_* Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 62/86] x86/speculation: Consolidate CPU whitelists Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 73/86] Documentation: Move L1TF to separate directory Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 19/86] locking/static_keys: Fix up the static keys documentation Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 15/86] locking/static_keys: Add a new static_key interface Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 49/86] x86/speculation: Prepare for per task indirect branch speculation control Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 46/86] x86/speculataion: Mark command line parser data __initdata Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 53/86] x86/speculation: Split out TIF update Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 11/86] jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP} Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 85/86] x86/cpu/bugs: Use __initconst for 'const' init data Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 13/86] jump_label: Add jump_entry_key() helper Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 61/86] x86/msr-index: Cleanup bit defines Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 55/86] x86/speculation: Prevent stale SPEC_CTRL msr content Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 84/86] x86/speculation/mds: Fix documentation typo Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 67/86] x86/speculation/mds: Clear CPU buffers on exit to user Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 65/86] x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 56/86] x86/speculation: Add prctl() control for indirect branch speculation Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 12/86] jump_label, locking/static_keys: Rename JUMP_LABEL_TYPE_* and related helpers to the static_key* pattern Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 47/86] x86/speculation: Unify conditional spectre v2 print functions Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 26/86] locking/static_keys: Provide DECLARE and well as DEFINE macros Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 25/86] locking/static_key: Fix concurrent static_key_slow_inc() Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 17/86] jump_label/x86: Work around asm build bug on older/backported GCCs Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 20/86] jump_label: make static_key_enabled() work on static_key_true/false types too Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 72/86] x86/speculation/mds: Add mitigation mode VMWERV Ben Hutchings
2019-05-16 15:55 ` [PATCH 3.16 42/86] sched: Add sched_smt_active() Ben Hutchings
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