From: Tim Chen <tim.c.chen@linux.intel.com>
To: Jiri Kosina <jikos@kernel.org>, Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Andrea Arcangeli <aarcange@redhat.com>,
David Woodhouse <dwmw@amazon.co.uk>,
Andi Kleen <ak@linux.intel.com>,
Dave Hansen <dave.hansen@intel.com>,
Casey Schaufler <casey.schaufler@intel.com>,
Asit Mallick <asit.k.mallick@intel.com>,
Arjan van de Ven <arjan@linux.intel.com>,
Jon Masters <jcm@redhat.com>, Waiman Long <longman9394@gmail.com>,
linux-kernel@vger.kernel.org, x86@kernel.org
Subject: [Patch v4 01/18] x86/speculation: Clean up spectre_v2_parse_cmdline()
Date: Tue, 30 Oct 2018 11:49:08 -0700 [thread overview]
Message-ID: <fc5b88cf55fe685ec45044c906da9d0c526ff686.1540923609.git.tim.c.chen@linux.intel.com> (raw)
In-Reply-To: <cover.1540923609.git.tim.c.chen@linux.intel.com>
In-Reply-To: <cover.1540923609.git.tim.c.chen@linux.intel.com>
Remove unnecessary else statement in spectre_v2_parse_cmdline()
to save a indentation level.
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
---
arch/x86/kernel/cpu/bugs.c | 27 +++++++++++++--------------
1 file changed, 13 insertions(+), 14 deletions(-)
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index fe32103..bbda9b6 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -283,22 +283,21 @@ static enum spectre_v2_mitigation_cmd __init spectre_v2_parse_cmdline(void)
if (cmdline_find_option_bool(boot_command_line, "nospectre_v2"))
return SPECTRE_V2_CMD_NONE;
- else {
- ret = cmdline_find_option(boot_command_line, "spectre_v2", arg, sizeof(arg));
- if (ret < 0)
- return SPECTRE_V2_CMD_AUTO;
- for (i = 0; i < ARRAY_SIZE(mitigation_options); i++) {
- if (!match_option(arg, ret, mitigation_options[i].option))
- continue;
- cmd = mitigation_options[i].cmd;
- break;
- }
+ ret = cmdline_find_option(boot_command_line, "spectre_v2", arg, sizeof(arg));
+ if (ret < 0)
+ return SPECTRE_V2_CMD_AUTO;
- if (i >= ARRAY_SIZE(mitigation_options)) {
- pr_err("unknown option (%s). Switching to AUTO select\n", arg);
- return SPECTRE_V2_CMD_AUTO;
- }
+ for (i = 0; i < ARRAY_SIZE(mitigation_options); i++) {
+ if (!match_option(arg, ret, mitigation_options[i].option))
+ continue;
+ cmd = mitigation_options[i].cmd;
+ break;
+ }
+
+ if (i >= ARRAY_SIZE(mitigation_options)) {
+ pr_err("unknown option (%s). Switching to AUTO select\n", arg);
+ return SPECTRE_V2_CMD_AUTO;
}
if ((cmd == SPECTRE_V2_CMD_RETPOLINE ||
--
2.9.4
next prev parent reply other threads:[~2018-10-30 19:22 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-30 18:49 [Patch v4 00/18] Provide process property based options to enable Spectre v2 userspace-userspace protection* Tim Chen
2018-10-30 18:49 ` Tim Chen [this message]
2018-10-30 18:49 ` [Patch v4 02/18] x86/speculation: Remove unnecessary ret variable in cpu_show_common() Tim Chen
2018-10-30 18:49 ` [Patch v4 03/18] x86/speculation: Reorganize cpu_show_common() Tim Chen
2018-11-03 18:07 ` Thomas Gleixner
2018-11-05 19:12 ` Tim Chen
2018-11-05 19:17 ` Thomas Gleixner
2018-10-30 18:49 ` [Patch v4 04/18] x86/speculation: Add X86_FEATURE_USE_IBRS_ENHANCED Tim Chen
2018-10-30 18:49 ` [Patch v4 05/18] x86/speculation: Disable STIBP when enhanced IBRS is in use Tim Chen
2018-10-30 18:49 ` [Patch v4 06/18] smt: Create cpu_smt_enabled static key for SMT specific code Tim Chen
2018-10-30 18:49 ` [Patch v4 07/18] x86/smt: Convert cpu_smt_control check to cpu_smt_enabled static key Tim Chen
2018-11-03 18:29 ` Thomas Gleixner
2018-11-08 1:43 ` Tim Chen
2018-11-08 11:18 ` Thomas Gleixner
2018-10-30 18:49 ` [Patch v4 08/18] sched: Deprecate sched_smt_present and use " Tim Chen
2018-11-03 18:20 ` Thomas Gleixner
2018-11-09 22:08 ` Tim Chen
2018-10-30 18:49 ` [Patch v4 09/18] x86/speculation: Rename SSBD update functions Tim Chen
2018-10-30 18:49 ` [Patch v4 10/18] x86/speculation: Reorganize speculation control MSRs update Tim Chen
2018-10-30 18:49 ` [Patch v4 11/18] x86/speculation: Update comment on TIF_SSBD Tim Chen
2018-10-30 18:49 ` [Patch v4 12/18] x86: Group thread info flags by functionality Tim Chen
2018-10-30 18:49 ` [Patch v4 13/18] security: Update security level of a process when modifying its dumpability Tim Chen
2018-10-30 20:57 ` Schaufler, Casey
2018-10-30 21:30 ` Tim Chen
2018-10-30 21:53 ` Schaufler, Casey
2018-10-30 18:49 ` [Patch v4 14/18] x86/speculation: Turn on or off STIBP according to a task's TIF_STIBP Tim Chen
2018-10-30 18:49 ` [Patch v4 15/18] x86/speculation: Add Spectre v2 app to app protection modes Tim Chen
2018-10-30 18:49 ` [Patch v4 16/18] x86/speculation: Enable STIBP to protect security sensitive tasks Tim Chen
2018-10-30 21:07 ` Schaufler, Casey
2018-10-30 21:34 ` Tim Chen
2018-10-30 22:02 ` Schaufler, Casey
2018-10-30 18:49 ` [Patch v4 17/18] x86/speculation: Update SPEC_CTRL MSRs of remote CPUs Tim Chen
2018-11-04 19:49 ` Thomas Gleixner
2018-11-05 22:02 ` Tim Chen
2018-11-05 23:04 ` Thomas Gleixner
2018-11-05 23:59 ` Tim Chen
2018-11-06 7:46 ` Thomas Gleixner
2018-11-07 0:18 ` Tim Chen
2018-11-07 18:33 ` Waiman Long
2018-11-07 23:15 ` Tim Chen
2018-11-07 23:03 ` Thomas Gleixner
2018-11-08 0:22 ` Tim Chen
2018-10-30 18:49 ` [Patch v4 18/18] x86/speculation: Create PRCTL interface to restrict indirect branch speculation Tim Chen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=fc5b88cf55fe685ec45044c906da9d0c526ff686.1540923609.git.tim.c.chen@linux.intel.com \
--to=tim.c.chen@linux.intel.com \
--cc=aarcange@redhat.com \
--cc=ak@linux.intel.com \
--cc=arjan@linux.intel.com \
--cc=asit.k.mallick@intel.com \
--cc=casey.schaufler@intel.com \
--cc=dave.hansen@intel.com \
--cc=dwmw@amazon.co.uk \
--cc=jcm@redhat.com \
--cc=jikos@kernel.org \
--cc=jpoimboe@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=longman9394@gmail.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=thomas.lendacky@amd.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).