kernel: generic: Add kernel 4.14 support

This adds initial support for kernel 4.14 based on the patches for
kernel 4.9.

In the configuration I deactivated some of the new possible security
features like:
CONFIG_REFCOUNT_FULL
CONFIG_SLAB_FREELIST_HARDENED
CONFIG_SOFTLOCKUP_DETECTOR
CONFIG_WARN_ALL_UNSEEDED_RANDOM

And these overlay FS options are also deactivated:
CONFIG_OVERLAY_FS_INDEX
CONFIG_OVERLAY_FS_REDIRECT_DIR

I activated this:
CONFIG_FORTIFY_SOURCE
CONFIG_POSIX_TIMERS
CONFIG_SLAB_MERGE_DEFAULT
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED

I am not sure if I did the porting correct for the following patches:
target/linux/generic/backport-4.14/020-backport_netfilter_rtcache.patch
target/linux/generic/hack-4.14/220-gc_sections.patch
target/linux/generic/hack-4.14/321-powerpc_crtsavres_prereq.patch
target/linux/generic/pending-4.14/305-mips_module_reloc.patch
target/linux/generic/pending-4.14/611-netfilter_match_bypass_default_table.patch
target/linux/generic/pending-4.14/680-NET-skip-GRO-for-foreign-MAC-addresses.patch

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 41 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.14/420-mtd-redboot_space.patch b/target/linux/generic/pending-4.14/420-mtd-redboot_space.patch
new file mode 100644
index 0000000000..85fbe0512d
--- /dev/null
+++ b/target/linux/generic/pending-4.14/420-mtd-redboot_space.patch
@@ -0,0 +1,41 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: add patch for including unpartitioned space in the rootfs partition for redboot devices (if applicable)
+
+[john@phrozen.org: used by ixp and others]
+
+lede-commit: 394918851f84e4d00fa16eb900e7700e95091f00
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ drivers/mtd/redboot.c | 19 +++++++++++++------
+ 1 file changed, 13 insertions(+), 6 deletions(-)
+
+--- a/drivers/mtd/redboot.c
++++ b/drivers/mtd/redboot.c
+@@ -265,14 +265,21 @@ static int parse_redboot_partitions(stru
+ #endif
+ 		names += strlen(names)+1;
+ 
+-#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+ 		if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
+-			i++;
+-			parts[i].offset = parts[i-1].size + parts[i-1].offset;
+-			parts[i].size = fl->next->img->flash_base - parts[i].offset;
+-			parts[i].name = nullname;
+-		}
++			if (!strcmp(parts[i].name, "rootfs")) {
++				parts[i].size = fl->next->img->flash_base;
++				parts[i].size &= ~(master->erasesize - 1);
++				parts[i].size -= parts[i].offset;
++#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
++				nrparts--;
++			} else {
++				i++;
++				parts[i].offset = parts[i-1].size + parts[i-1].offset;
++				parts[i].size = fl->next->img->flash_base - parts[i].offset;
++				parts[i].name = nullname;
+ #endif
++			}
++		}
+ 		tmp_fl = fl;
+ 		fl = fl->next;
+ 		kfree(tmp_fl);