From: Waiman Long
redhat/configs: Enable CONFIG_MITIGATION_SLS for RHEL
Like Fedora, CONFIG_MITIGATION_SLS had been enabled for RHEL9 since
9.3. Update the kernel-ark setting to match current RHEL9 setting.
Signed-off-by: Waiman Long
diff --git a/redhat/configs/fedora/generic/x86/CONFIG_MITIG
From: Waiman Long
redhat/configs: Update LOCKDEP configs
CS9 has the following rt-debug LOCKDEP configs that are not in
kernel-ark yet.
rhel/rt-debug/CONFIG_LOCKDEP_BITS:CONFIG_LOCKDEP_BITS=18
rhel/rt-debug/CONFIG_LOCKDEP_CHAINS_BITS:CONFIG_LOCKDEP_CHAINS_BITS=20
rhel/rt-debug/CONFIG_LOC
From: Waiman Long
redhat/configs: Update LOCKDEP configs
CS9 has the following rt-debug LOCKDEP configs that are not in
kernel-ark yet.
rhel/rt-debug/CONFIG_LOCKDEP_BITS:CONFIG_LOCKDEP_BITS=18
rhel/rt-debug/CONFIG_LOCKDEP_CHAINS_BITS:CONFIG_LOCKDEP_CHAINS_BITS=20
rhel/rt-debug/CONFIG_LOC
From: Waiman Long
redhat/configs: Double MAX_LOCKDEP_ENTRIES for RT debug kernels
JIRA: https://issues.redhat.com/browse/RHEL-43425
Due to the fact that RT debug kernel replaces spinlock, rwlock and
local_lock to rt_mutex, the number of generated lockdep entries can be
increased rather signific
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3268#note_2010798765
LGTM
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3268#note_2008949464
For CONFIG_RTC_DRV_RV3028, rhel/generic is off but fedora/genenric is "m". My
understanding is that commn/generic is used if both rhel and fedora are the
same. So it is not right to move
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3241#note_2002440601
OK, just want to make sure that you are aware of that.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/3241#note_2002431908
centos-stream-9 has "CONFIG_RTC_DRV_TEGRA=y", but the Fedora one is
"CONFIG_RTC_DRV_TEGRA=m". Are you going to change CS9 to match kernel-ark or
vice versa?
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From: Waiman Long
redhat/configs: Enable CONFIG_MITIGATION_SLS for RHEL
Like Fedora, CONFIG_MITIGATION_SLS had been enabled for RHEL9 since
9.3. Update the kernel-ark setting to match current RHEL9 setting.
Signed-off-by: Waiman Long
diff --git a/redhat/configs/fedora/generic/x86/CONFIG_MITIG
From: Waiman Long
redhat/configs: Enable CONFIG_MITIGATION_SLS for RHEL
Like Fedora, CONFIG_MITIGATION_SLS had been enabled for RHEL9 since
9.3. Update the kernel-ark setting to match current RHEL9 setting.
Signed-off-by: Waiman Long
diff --git a/redhat/configs/fedora/generic/x86/CONFIG_MITIG
From: Waiman Long
redhat/configs: Clean up x86-64 call depth tracking configs
In both configs/fedora and config/rhel, CONFIG_CALL_DEPTH_TRACKING=y
and CONFIG_CALL_THUNKS_DEBUG=n. So they can be moved to the common
directory. Since these are x86-64 specific configs, they should be
under common/ge
From: Waiman Long
redhat/configs: Clean up x86-64 call depth tracking configs
In both configs/fedora and config/rhel, CONFIG_CALL_DEPTH_TRACKING=y
and CONFIG_CALL_THUNKS_DEBUG=n. So they can be moved to the common
directory. Since these are x86-64 specific configs, they should be
under common/ge
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2452#note_1442615942
@prarit, would you mind reviewing the config change in this MR. BTW, your
config checking scripts generate multiple blocking threads in CS9 MR #2448. Is
it possible to modify your script
From: Waiman Long
redhat/configs: Clean up x86-64 call depth tracking configs
In both configs/fedora and config/rhel, CONFIG_CALL_DEPTH_TRACKING=y
and CONFIG_CALL_THUNKS_DEBUG=n. So they can be moved to the common
directory. Since these are x86-64 specific configs, they should be
under common/ge
From: Waiman Long
redhat/configs: Clean up x86-64 call depth tracking configs
In both configs/fedora and config/rhel, CONFIG_CALL_DEPTH_TRACKING=y
and CONFIG_CALL_THUNKS_DEBUG=n. So they can be moved to the common
directory. Since these are x86-64 specific configs, they should be
under common/ge
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2346#note_1298001576
I think we should backport this IBT support to RHEL9. Hopefully we can do it
in 9.3 or 9.4.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2311#note_1290180647
According to the PROVE_RAW_LOCK_NESTING entry in lib/Kconfig.debug:
NOTE: There are known nesting problems. So if you enable this
option expect lockdep splats until th
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2127#note_1174604596
Yes, it is essentially a noop. Will close this MR. Thanks!
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From: Waiman Long
redhat/configs: Move ark/generic/s390x/CONFIG_ZSMALLOC to common/generic
Commit 3f72c8eb03cb ("Fix up ZSMALLOC config for s390") added s390x specific
CONFIG_ZSMALLOC to resolve config generation problem due to upcommit commit
b3fbd58fcbb1 ("mm: Kconfig: simplify zswap configura
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2110#note_1142101276
Looking at how CONFIG_PTE_MARKER is set, I believe it is a dependent config
variable that is to be set automatically when CONFIG_PTE_MARKER_UFFD_WP is set
which further depends on when C
From: Waiman Long
redhat/configs: Sync up Retbleed configs with centos-stream
Move the Retbleed configs from ark/generic to common/generic/x86 to
match what is done in centos-stream-9.
Signed-off-by: Waiman Long
diff --git a/redhat/configs/ark/generic/CONFIG_CPU_IBPB_ENTRY
b/redhat/configs/c
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1743#note_906561061
I am OK with the change in
common/generic/CONFIG_HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET. For the one under
Fedora, it is up to Justin to decide.
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From: Waiman Long
redhat/configs: Enable CONFIG_RCU_SCALE_TEST & CONFIG_RCU_REF_SCALE_TEST
Enable CONFIG_RCU_SCALE_TEST and CONFIG_RCU_REF_SCALE_TEST to build
the rcuscale and refscale test kernel modules to be included in
kernel-modules-internal rpm to be used for internal QE testing.
Signed-o
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1598#note_828630553
I see, you are right. The subsequently statement should be pull inside the
CONFIG_SPARSEMEM_EXTREME block. So Fedora is built with
CONFIG_SPARSEMEM_EXTREME off. Right?
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1598#note_828453063
Actually, the correct fix should be "if (!*mem_section")", it is a bug in the
upstream code.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1583#note_815697804
I have no objection to just "push" it without an MR as long as there is no
changed in generated config files.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1440#note_713583578
Acked-by: Waiman Long
(via approve button)
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1422#note_692965769
It will probably help if you mention what kind of testing you had done in the
description and/or commit log. This MR isn't just config file changes. It also
touch another redhat file.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1422#note_692903141
What you need to add a config file under ark/debug/arm/aarch64 since you
already have one under common/debug.
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From: Waiman Long
redhat/configs: Enable CONFIG_BLK_CGROUP_IOLATENCY & CONFIG_BLK_CGROUP_FC_APPID
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2006813
Upstream Status: RHEL only
Tested: After "make dist-configs", both CONFIG_BLK_CGROUP_IOLATENCY and
CONFIG_BLK_CGROUP_FC_APPID ar
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1297#note_648756262
I believe that you may want to set kernel-
ark/redhat/configs/common/generic/CONFIG_FUNCTION_PROFILER instead to make
sure it works for RHEL-9.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1297#note_646807771
I don't see a problem for it to be enabled globally. It is just a matter if we
modify this MR to do it or have a separating MR doing that.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1297#note_646764317
Acked-by: Waiman Long
(via approve button)
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1271#note_633650573
Sorry, wrong BZ number, need to push a v2.
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From: Waiman Long
redhat/configs: Double MAX_LOCKDEP_ENTRIES
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1940075
Upstream: RHEL only
MAX_LOCKDEP_ENTRIES in lockdep is controlled by CONFIG_LOCKDEP_BITS. By
increasing it from a default of 15 to 16, we double MAX_LOCKDEP_ENTRIES
from 32k
From: Waiman Long
redhat/configs: Double MAX_LOCKDEP_ENTRIES
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1972078
Upstream: RHEL only
MAX_LOCKDEP_ENTRIES in lockdep is controlled by CONFIG_LOCKDEP_BITS. By
increasing it from a default of 15 to 16, we double MAX_LOCKDEP_ENTRIES
from 32k
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1177#note_621767044
Acked-by: Waiman Long
(via approve button)
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1124#note_571980449
Perhaps, this patchset can wait until the final merge to v5.14 after
which the code will be more stable.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/831#note_566056479
The patch looks good. We don't need to enable the config as it is mostly
for Android.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1023#note_550913718
c) sounds good to me as no kernel will be tainted by default.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1023#note_550880080
RHEL8 has a mark_tech_preview() function which should be called when a
tech preview feature is used. I don't know if ARK kernel has that or
not. Also I don't think we need to warn when cm
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/987#note_541490782
Thanks for adding me to kernel-ark.
The changes look good to me now.
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From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/987#note_541393402
Your patch seems to put CONFIG_LOCK_TORTURE_TEST in common/debug and put
CONFIG_RCU_TORTURE_TEST in both debug and generic. However you remove
CONFIG_TORTURE_TEST. That won't work. All 3 C
From: Waiman Long on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/961#note_530990147
The patchset looks good to me. Of the four config options,
PAGE_POISONING is the one that definitely has performance impact. Since
page poisoning is an opt-in at boot time, there should be
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