* x86/MCE: Remove min interval limitation
@ 2018-07-16 8:49 ` Alexander Sverdlin
0 siblings, 0 replies; 6+ messages in thread
From: Alexander Sverdlin @ 2018-07-16 8:49 UTC (permalink / raw)
To: linux-edac
Cc: Dewet Thibaut, Tony Luck, Borislav Petkov, Thomas Gleixner,
Ingo Molnar, H. Peter Anvin, x86, stable, Alexander Sverdlin
From: Dewet Thibaut <thibaut.dewet@nokia.com>
Previously the min interval limitation (one second) has been introduced.
In this case it was no longer possible to disable the machine check.
This patch removes this limitation and allows the value 0 again.
Cc: stable@vger.kernel.org
Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes")
Signed-off-by: Dewet Thibaut <thibaut.dewet@nokia.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c102ad51025e..8c50754c09c1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2165,9 +2165,6 @@ static ssize_t store_int_with_restart(struct device *s,
if (check_interval == old_check_interval)
return ret;
- if (check_interval < 1)
- check_interval = 1;
-
mutex_lock(&mce_sysfs_mutex);
mce_restart();
mutex_unlock(&mce_sysfs_mutex);
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH] x86/MCE: Remove min interval limitation
@ 2018-07-16 8:49 ` Alexander Sverdlin
0 siblings, 0 replies; 6+ messages in thread
From: Alexander Sverdlin @ 2018-07-16 8:49 UTC (permalink / raw)
To: linux-edac
Cc: Dewet Thibaut, Tony Luck, Borislav Petkov, Thomas Gleixner,
Ingo Molnar, H. Peter Anvin, x86, stable, Alexander Sverdlin
From: Dewet Thibaut <thibaut.dewet@nokia.com>
Previously the min interval limitation (one second) has been introduced.
In this case it was no longer possible to disable the machine check.
This patch removes this limitation and allows the value 0 again.
Cc: stable@vger.kernel.org
Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes")
Signed-off-by: Dewet Thibaut <thibaut.dewet@nokia.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c102ad51025e..8c50754c09c1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2165,9 +2165,6 @@ static ssize_t store_int_with_restart(struct device *s,
if (check_interval == old_check_interval)
return ret;
- if (check_interval < 1)
- check_interval = 1;
-
mutex_lock(&mce_sysfs_mutex);
mce_restart();
mutex_unlock(&mce_sysfs_mutex);
--
2.18.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [tip:x86/urgent] x86/MCE: Remove min interval polling limitation
@ 2018-07-17 14:54 ` tip-bot for Borislav Petkov
0 siblings, 0 replies; 6+ messages in thread
From: tip-bot for Dewet Thibaut @ 2018-07-17 14:54 UTC (permalink / raw)
To: linux-tip-commits
Cc: bp, tony.luck, linux-kernel, linux-edac, mingo, tglx,
thibaut.dewet, alexander.sverdlin, hpa
Commit-ID: fd4054b31af283af9ec44895e561bbb3449ad81d
Gitweb: https://git.kernel.org/tip/fd4054b31af283af9ec44895e561bbb3449ad81d
Author: Dewet Thibaut <thibaut.dewet@nokia.com>
AuthorDate: Mon, 16 Jul 2018 10:49:27 +0200
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Tue, 17 Jul 2018 16:50:17 +0200
x86/MCE: Remove min interval polling limitation
commit b3b7c4795c ("x86/MCE: Serialize sysfs changes") introduced a min
interval limitation when setting the check interval for polled MCEs.
However, the logic is that 0 disables polling for corrected MCEs, see
Documentation/x86/x86_64/machinecheck. The limitation prevents disabling.
Remove this limitation and allow the value 0 to disable polling again.
Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes")
Signed-off-by: Dewet Thibaut <thibaut.dewet@nokia.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
[ Massage commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20180716084927.24869-1-alexander.sverdlin@nokia.com
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c102ad51025e..8c50754c09c1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2165,9 +2165,6 @@ static ssize_t store_int_with_restart(struct device *s,
if (check_interval == old_check_interval)
return ret;
- if (check_interval < 1)
- check_interval = 1;
-
mutex_lock(&mce_sysfs_mutex);
mce_restart();
mutex_unlock(&mce_sysfs_mutex);
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [tip:x86/urgent] x86/MCE: Remove min interval polling limitation
@ 2018-07-17 14:54 ` tip-bot for Borislav Petkov
0 siblings, 0 replies; 6+ messages in thread
From: tip-bot for Borislav Petkov @ 2018-07-17 14:54 UTC (permalink / raw)
To: linux-tip-commits
Cc: bp, tony.luck, linux-kernel, linux-edac, mingo, tglx,
thibaut.dewet, alexander.sverdlin, hpa
Commit-ID: fd4054b31af283af9ec44895e561bbb3449ad81d
Gitweb: https://git.kernel.org/tip/fd4054b31af283af9ec44895e561bbb3449ad81d
Author: Dewet Thibaut <thibaut.dewet@nokia.com>
AuthorDate: Mon, 16 Jul 2018 10:49:27 +0200
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Tue, 17 Jul 2018 16:50:17 +0200
x86/MCE: Remove min interval polling limitation
commit b3b7c4795c ("x86/MCE: Serialize sysfs changes") introduced a min
interval limitation when setting the check interval for polled MCEs.
However, the logic is that 0 disables polling for corrected MCEs, see
Documentation/x86/x86_64/machinecheck. The limitation prevents disabling.
Remove this limitation and allow the value 0 to disable polling again.
Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes")
Signed-off-by: Dewet Thibaut <thibaut.dewet@nokia.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
[ Massage commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20180716084927.24869-1-alexander.sverdlin@nokia.com
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 ---
1 file changed, 3 deletions(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-edac" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c102ad51025e..8c50754c09c1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2165,9 +2165,6 @@ static ssize_t store_int_with_restart(struct device *s,
if (check_interval == old_check_interval)
return ret;
- if (check_interval < 1)
- check_interval = 1;
-
mutex_lock(&mce_sysfs_mutex);
mce_restart();
mutex_unlock(&mce_sysfs_mutex);
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [tip:x86/urgent] x86/MCE: Remove min interval polling limitation
@ 2018-07-17 16:00 ` tip-bot for Borislav Petkov
0 siblings, 0 replies; 6+ messages in thread
From: tip-bot for Dewet Thibaut @ 2018-07-17 16:00 UTC (permalink / raw)
To: linux-tip-commits
Cc: thibaut.dewet, alexander.sverdlin, mingo, tony.luck, linux-edac,
bp, linux-kernel, hpa, tglx
Commit-ID: fbdb328c6bae0a7c78d75734a738b66b86dffc96
Gitweb: https://git.kernel.org/tip/fbdb328c6bae0a7c78d75734a738b66b86dffc96
Author: Dewet Thibaut <thibaut.dewet@nokia.com>
AuthorDate: Mon, 16 Jul 2018 10:49:27 +0200
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Tue, 17 Jul 2018 17:56:25 +0200
x86/MCE: Remove min interval polling limitation
commit b3b7c4795c ("x86/MCE: Serialize sysfs changes") introduced a min
interval limitation when setting the check interval for polled MCEs.
However, the logic is that 0 disables polling for corrected MCEs, see
Documentation/x86/x86_64/machinecheck. The limitation prevents disabling.
Remove this limitation and allow the value 0 to disable polling again.
Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes")
Signed-off-by: Dewet Thibaut <thibaut.dewet@nokia.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
[ Massage commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20180716084927.24869-1-alexander.sverdlin@nokia.com
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c102ad51025e..8c50754c09c1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2165,9 +2165,6 @@ static ssize_t store_int_with_restart(struct device *s,
if (check_interval == old_check_interval)
return ret;
- if (check_interval < 1)
- check_interval = 1;
-
mutex_lock(&mce_sysfs_mutex);
mce_restart();
mutex_unlock(&mce_sysfs_mutex);
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [tip:x86/urgent] x86/MCE: Remove min interval polling limitation
@ 2018-07-17 16:00 ` tip-bot for Borislav Petkov
0 siblings, 0 replies; 6+ messages in thread
From: tip-bot for Borislav Petkov @ 2018-07-17 16:00 UTC (permalink / raw)
To: linux-tip-commits
Cc: thibaut.dewet, alexander.sverdlin, mingo, tony.luck, linux-edac,
bp, linux-kernel, hpa, tglx
Commit-ID: fbdb328c6bae0a7c78d75734a738b66b86dffc96
Gitweb: https://git.kernel.org/tip/fbdb328c6bae0a7c78d75734a738b66b86dffc96
Author: Dewet Thibaut <thibaut.dewet@nokia.com>
AuthorDate: Mon, 16 Jul 2018 10:49:27 +0200
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Tue, 17 Jul 2018 17:56:25 +0200
x86/MCE: Remove min interval polling limitation
commit b3b7c4795c ("x86/MCE: Serialize sysfs changes") introduced a min
interval limitation when setting the check interval for polled MCEs.
However, the logic is that 0 disables polling for corrected MCEs, see
Documentation/x86/x86_64/machinecheck. The limitation prevents disabling.
Remove this limitation and allow the value 0 to disable polling again.
Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes")
Signed-off-by: Dewet Thibaut <thibaut.dewet@nokia.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
[ Massage commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20180716084927.24869-1-alexander.sverdlin@nokia.com
---
arch/x86/kernel/cpu/mcheck/mce.c | 3 ---
1 file changed, 3 deletions(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-edac" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index c102ad51025e..8c50754c09c1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2165,9 +2165,6 @@ static ssize_t store_int_with_restart(struct device *s,
if (check_interval == old_check_interval)
return ret;
- if (check_interval < 1)
- check_interval = 1;
-
mutex_lock(&mce_sysfs_mutex);
mce_restart();
mutex_unlock(&mce_sysfs_mutex);
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-07-17 16:01 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-07-16 8:49 x86/MCE: Remove min interval limitation Alexander Sverdlin
2018-07-16 8:49 ` [PATCH] " Alexander Sverdlin
2018-07-17 14:54 ` [tip:x86/urgent] x86/MCE: Remove min interval polling limitation tip-bot for Dewet Thibaut
2018-07-17 14:54 ` tip-bot for Borislav Petkov
2018-07-17 16:00 ` tip-bot for Dewet Thibaut
2018-07-17 16:00 ` tip-bot for Borislav Petkov
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