Also enable build (incl. HP Sim) and test (incl. Ski) for linux-6.8.y

config/rc-branches

@@ -5,3 +5,4 @@ linux-5.15.y
 linux-6.1.y
 linux-6.6.y
 linux-6.7.y
+linux-6.8.y

patches/linux-6.8.y/0002-Revert-lib-raid6-Drop-IA64-support.patch

@@ -0,0 +1,90 @@
+From ebfac3caa240caeb1ae46b48a7f845c6f21af51b Mon Sep 17 00:00:00 2001
+From: Tomas Glozar <tglozar@gmail.com>
+Date: Fri, 27 Oct 2023 13:11:38 +0200
+Subject: [PATCH 02/21] Revert "lib/raid6: Drop IA64 support"
+
+This reverts commit b089ea3cc30de85ea7e20aa66500feb4082dfbf7.
+---
+ include/linux/raid/pq.h | 2 ++
+ lib/raid6/Makefile      | 4 ++--
+ lib/raid6/algos.c       | 4 ++++
+ lib/raid6/int.uc        | 9 +++++++++
+ 4 files changed, 17 insertions(+), 2 deletions(-)
+
+diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h
+index 98030accf641..006e18decfad 100644
+--- a/include/linux/raid/pq.h
++++ b/include/linux/raid/pq.h
+@@ -84,6 +84,8 @@ extern const struct raid6_calls raid6_intx1;
+ extern const struct raid6_calls raid6_intx2;
+ extern const struct raid6_calls raid6_intx4;
+ extern const struct raid6_calls raid6_intx8;
++extern const struct raid6_calls raid6_intx16;
++extern const struct raid6_calls raid6_intx32;
+ extern const struct raid6_calls raid6_mmxx1;
+ extern const struct raid6_calls raid6_mmxx2;
+ extern const struct raid6_calls raid6_sse1x1;
+diff --git a/lib/raid6/Makefile b/lib/raid6/Makefile
+index 1c5420ff254e..035b0a4db476 100644
+--- a/lib/raid6/Makefile
++++ b/lib/raid6/Makefile
+@@ -2,7 +2,7 @@
+ obj-$(CONFIG_RAID6_PQ)	+= raid6_pq.o
+
+ raid6_pq-y	+= algos.o recov.o tables.o int1.o int2.o int4.o \
+-		   int8.o
++		   int8.o int16.o int32.o
+
+ raid6_pq-$(CONFIG_X86) += recov_ssse3.o recov_avx2.o mmx.o sse1.o sse2.o avx2.o avx512.o recov_avx512.o
+ raid6_pq-$(CONFIG_ALTIVEC) += altivec1.o altivec2.o altivec4.o altivec8.o \
+@@ -55,7 +55,7 @@ endif
+ quiet_cmd_unroll = UNROLL  $@
+       cmd_unroll = $(AWK) -v N=$* -f $(srctree)/$(src)/unroll.awk < $< > $@
+
+-targets += int1.c int2.c int4.c int8.c
++targets += int1.c int2.c int4.c int8.c int16.c int32.c
+ $(obj)/int%.c: $(src)/int.uc $(src)/unroll.awk FORCE
+ 	$(call if_changed,unroll)
+
+diff --git a/lib/raid6/algos.c b/lib/raid6/algos.c
+index cd2e88ee1f14..0ec534faf019 100644
+--- a/lib/raid6/algos.c
++++ b/lib/raid6/algos.c
+@@ -80,6 +80,10 @@ const struct raid6_calls * const raid6_algos[] = {
+ #ifdef CONFIG_CPU_HAS_LSX
+ 	&raid6_lsx,
+ #endif
++#endif
++#if defined(__ia64__)
++	&raid6_intx32,
++	&raid6_intx16,
+ #endif
+ 	&raid6_intx8,
+ 	&raid6_intx4,
+diff --git a/lib/raid6/int.uc b/lib/raid6/int.uc
+index 1ba56c3fa482..558aeac9342a 100644
+--- a/lib/raid6/int.uc
++++ b/lib/raid6/int.uc
+@@ -41,6 +41,13 @@ typedef u32 unative_t;
+
+
+
++/*
++ * IA-64 wants insane amounts of unrolling.  On other architectures that
++ * is just a waste of space.
++ */
++#if ($# <= 8) || defined(__ia64__)
++
++
+ /*
+  * These sub-operations are separate inlines since they can sometimes be
+  * specially optimized using architecture-specific hacks.
+@@ -145,3 +152,5 @@ const struct raid6_calls raid6_intx$# = {
+ 	"int" NSTRING "x$#",
+ 	0
+ };
++
++#endif
+-- 
+2.25.1
+