linux-intel: Allow using "63" as alias for "last"

Previous Enea Edge releases hardcode the kernel args in a way that
cannot currently be changed on upgrade.

Due to upstream changes in the kernel, specifying a non-existent CPU,
e.g. greater than the number of the last CPU is no longer supported and
leads to nohz_full, isolcpus, rcu_nocbs no longer being honored.

Until we have a proper mechanism in place that will allow specifying
kernel arguments per-boot-entry; we alias "63" to "last", so that
expressions like "1-63" are equivalent to "1-last". This will ensure
backwards compatibility with kernel 4.14 arguments.

Note: This relies on the assumption that we don't support boards with
more than 64 cores and should be removed as soon as per-boot-entry
kernel args are supported.

Change-Id: I21d99315192ea4dc224f11314557e0a5ed1b34b6
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/recipes-kernel/linux/linux-intel.inc b/recipes-kernel/linux/linux-intel.inc
index 48a1894..685984c 100644
--- a/recipes-kernel/linux/linux-intel.inc
+++ b/recipes-kernel/linux/linux-intel.inc
@@ -4,7 +4,7 @@ require recipes-kernel/linux/linux-intel_5.10.bb
 require recipes-kernel/linux/linux-deploy-kconfig.inc
 require recipes-kernel/linux/linux-common-config.inc
 
-SRCREV_metaenea = "8dc3b0976651277b49123ab7cdf7ffe5bd250f8d"
+SRCREV_metaenea = "f86788bac0c8aaa0903aa2ef3b98ec0327a56d5b"
 KENEABRANCH = "intel-5.10"
 SRC_URI_append = " git://git@git.enea.com/linux/enea-kernel-cache.git;protocol=ssh;type=kmeta;name=metaenea;branch=${KENEABRANCH};destsuffix=enea-kernel-meta"
 
@@ -56,6 +56,9 @@ KERNEL_FEATURES_append = " features/ipmi/ipmi_ssif.scc"
 # ACPI Tiny power button
 KERNEL_FEATURES_append = " features/acpi/acpi_tiny_pwrbtn_y.scc"
 
+# CPULIST: Allow using "63" as an alias for "last" in nohz_full, isolcpus etc.
+KERNEL_FEATURES_append = " features/cpulist_abbrev/cpulist_abbrev_enea.scc"
+
 # IPv4 waiting for carrier on
 KERNEL_FEATURES_append = " patches/ipv4/ipv4wait.scc"