diff --git a/.gitignore b/.gitignore
index 29867ca..5440f26 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,4 @@
 SOURCES/kernel-abi-whitelists-693.tar.bz2
-SOURCES/linux-3.10.0-693.17.1.el7.tar.xz
+SOURCES/linux-3.10.0-693.21.1.el7.tar.xz
 SOURCES/rheldup3.x509
 SOURCES/rhelkpatch1.x509
-SOURCES/centos-kpatch.x509
-SOURCES/centos-ldup.x509
-SOURCES/centos.cer
diff --git a/.kernel.metadata b/.kernel.metadata
index 80d7490..13e15f0 100644
--- a/.kernel.metadata
+++ b/.kernel.metadata
@@ -1,7 +1,4 @@
 4cddbe6531170fad4a6dd31f10512e6bd4298fbd SOURCES/kernel-abi-whitelists-693.tar.bz2
-0cb69c0ea0f10f9e6a37a491b48502b839dc306b SOURCES/linux-3.10.0-693.17.1.el7.tar.xz
+43853d8a8a8c9ff26f3efc87757a197321f83e79 SOURCES/linux-3.10.0-693.21.1.el7.tar.xz
 95b9b811c7b0a6c98b2eafc4e7d6d24f2cb63289 SOURCES/rheldup3.x509
 d90885108d225a234a5a9d054fc80893a5bd54d0 SOURCES/rhelkpatch1.x509
-5a7d05a8298cf38d43689470e8e43230d8add0f9 SOURCES/centos-kpatch.x509
-c61172887746663d3bdd9acaa263cbfacf99e8b3 SOURCES/centos-ldup.x509
-6e9105eb51e55a46761838f289a917611cad8091 SOURCES/centos.cer
diff --git a/SOURCES/Makefile.common b/SOURCES/Makefile.common
index c2c1320..e70fbcb 100644
--- a/SOURCES/Makefile.common
+++ b/SOURCES/Makefile.common
@@ -9,7 +9,7 @@ RPMVERSION:=3.10.0
 # marker is git tag which we base off of for exporting patches
 MARKER:=v3.10
 PREBUILD:=
-BUILD:=693.17.1
+BUILD:=693.21.1
 DIST:=.el7
 SPECFILE:=kernel.spec
 RPM:=$(REDHAT)/rpm
diff --git a/SOURCES/debrand-rh-i686-cpu.patch b/SOURCES/debrand-rh-i686-cpu.patch
deleted file mode 100644
index 739855c..0000000
--- a/SOURCES/debrand-rh-i686-cpu.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/arch/x86/boot/main.c	2014-06-04 10:05:04.000000000 -0700
-+++ b/arch/x86/boot/main.c	2014-07-09 12:54:40.000000000 -0700
-@@ -146,7 +146,7 @@ void main(void)
- 
- 	/* Make sure we have all the proper CPU support */
- 	if (validate_cpu()) {
--		puts("This processor is unsupported in RHEL7.\n");
-+		puts("This processor is unsupported in CentOS 7.\n");
- 		die();
- 	}
- 
diff --git a/SOURCES/debrand-rh_taint.patch b/SOURCES/debrand-rh_taint.patch
deleted file mode 100644
index 8ef4557..0000000
--- a/SOURCES/debrand-rh_taint.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-From 69c0d42cfa26515196896dea086857c2caccb6eb Mon Sep 17 00:00:00 2001
-From: Jim Perrin <jperrin@centos.org>
-Date: Thu, 19 Jun 2014 10:05:12 -0500
-Subject: [PATCH] branding patch for rh_taint
-
----
- kernel/rh_taint.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/kernel/rh_taint.c b/kernel/rh_taint.c
-index 59a74b0..0708e15 100644
---- a/kernel/rh_taint.c
-+++ b/kernel/rh_taint.c
-@@ -8,7 +8,7 @@
- void mark_hardware_unsupported(const char *msg)
- {
- 	/* Print one single message */
--	pr_crit("Warning: %s - this hardware has not undergone testing by Red Hat and might not be certified. Please consult https://hardware.redhat.com for certified hardware.\n", msg);
-+	pr_crit("Warning: %s - this hardware has not undergone upstream testing. Please consult http://wiki.centos.org/FAQ for more information\n", msg);
- }
- EXPORT_SYMBOL(mark_hardware_unsupported);
- 
--- 
-1.8.3.1
-
diff --git a/SOURCES/debrand-single-cpu.patch b/SOURCES/debrand-single-cpu.patch
deleted file mode 100644
index 9d2e08b..0000000
--- a/SOURCES/debrand-single-cpu.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-From 66185f5c6f881847776702e3a7956c504400f4f2 Mon Sep 17 00:00:00 2001
-From: Jim Perrin <jperrin@centos.org>
-Date: Thu, 19 Jun 2014 09:53:13 -0500
-Subject: [PATCH] branding patch for single-cpu systems
-
----
- arch/x86/kernel/setup.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
-index b289118..9d25982 100644
---- a/arch/x86/kernel/setup.c
-+++ b/arch/x86/kernel/setup.c
-@@ -846,7 +846,7 @@ static void rh_check_supported(void)
- 	if (((boot_cpu_data.x86_max_cores * smp_num_siblings) == 1) &&
- 	    !x86_hyper && !cpu_has_hypervisor && !is_kdump_kernel()) {
- 		pr_crit("Detected single cpu native boot.\n");
--		pr_crit("Important:  In Red Hat Enterprise Linux 7, single threaded, single CPU 64-bit physical systems are unsupported by Red Hat. Please contact your Red Hat support representative for a list of certified and supported systems.");
-+		pr_crit("Important:  In CentOS 7, single threaded, single CPU 64-bit physical systems are unsupported. Please see http://wiki.centos.org/FAQ for more information");
- 	}
- 
- 	/* The RHEL7 kernel does not support this hardware.  The kernel will
--- 
-1.8.3.1
-
diff --git a/SOURCES/kernel-3.10.0-x86_64-debug.config b/SOURCES/kernel-3.10.0-x86_64-debug.config
index 84d4d24..ec93005 100644
--- a/SOURCES/kernel-3.10.0-x86_64-debug.config
+++ b/SOURCES/kernel-3.10.0-x86_64-debug.config
@@ -383,6 +383,7 @@ CONFIG_ZONE_DMA=y
 CONFIG_SMP=y
 CONFIG_X86_X2APIC=y
 CONFIG_X86_MPPARSE=y
+CONFIG_RETPOLINE=y
 CONFIG_INTEL_RDT_A=y
 CONFIG_X86_EXTENDED_PLATFORM=y
 # CONFIG_X86_NUMACHIP is not set
@@ -1518,6 +1519,7 @@ CONFIG_DEV_COREDUMP=y
 # CONFIG_DEBUG_DEVRES is not set
 CONFIG_SYS_HYPERVISOR=y
 # CONFIG_GENERIC_CPU_DEVICES is not set
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
 CONFIG_REGMAP=y
 CONFIG_REGMAP_I2C=m
 CONFIG_REGMAP_SPI=m
diff --git a/SOURCES/kernel-3.10.0-x86_64.config b/SOURCES/kernel-3.10.0-x86_64.config
index c6a4d48..d4d5ddf 100644
--- a/SOURCES/kernel-3.10.0-x86_64.config
+++ b/SOURCES/kernel-3.10.0-x86_64.config
@@ -388,6 +388,7 @@ CONFIG_ZONE_DMA=y
 CONFIG_SMP=y
 CONFIG_X86_X2APIC=y
 CONFIG_X86_MPPARSE=y
+CONFIG_RETPOLINE=y
 CONFIG_INTEL_RDT_A=y
 CONFIG_X86_EXTENDED_PLATFORM=y
 # CONFIG_X86_NUMACHIP is not set
@@ -1522,6 +1523,7 @@ CONFIG_DEV_COREDUMP=y
 # CONFIG_DEBUG_DEVRES is not set
 CONFIG_SYS_HYPERVISOR=y
 # CONFIG_GENERIC_CPU_DEVICES is not set
+CONFIG_GENERIC_CPU_VULNERABILITIES=y
 CONFIG_REGMAP=y
 CONFIG_REGMAP_I2C=m
 CONFIG_REGMAP_SPI=m
diff --git a/SOURCES/x509.genkey b/SOURCES/x509.genkey
index d98f8fe..b1bbe38 100644
--- a/SOURCES/x509.genkey
+++ b/SOURCES/x509.genkey
@@ -5,9 +5,9 @@ prompt = no
 x509_extensions = myexts
 
 [ req_distinguished_name ]
-O = CentOS
-CN = CentOS Linux kernel signing key
-emailAddress = security@centos.org
+O = Red Hat
+CN = Red Hat Enterprise Linux kernel signing key
+emailAddress = secalert@redhat.com
 
 [ myexts ]
 basicConstraints=critical,CA:FALSE
diff --git a/SPECS/kernel.spec b/SPECS/kernel.spec
index fce0af1..3afe70e 100644
--- a/SPECS/kernel.spec
+++ b/SPECS/kernel.spec
@@ -12,7 +12,7 @@ Summary: The Linux kernel
 %global distro_build 693
 
 %define rpmversion 3.10.0
-%define pkgrelease 693.17.1.el7
+%define pkgrelease 693.21.1.el7
 
 %define pkg_release %{pkgrelease}%{?buildid}
 
@@ -359,16 +359,16 @@ Source10: sign-modules
 Source11: x509.genkey
 Source12: extra_certificates
 %if %{?released_kernel}
-Source13: centos.cer
+Source13: securebootca.cer
 Source14: secureboot.cer
 %define pesign_name redhatsecureboot301
 %else
-Source13: centos.cer
-Source14: secureboot.cer
+Source13: redhatsecurebootca2.cer
+Source14: redhatsecureboot003.cer
 %define pesign_name redhatsecureboot003
 %endif
-Source15: centos-ldup.x509
-Source16: centos-kpatch.x509
+Source15: rheldup3.x509
+Source16: rhelkpatch1.x509
 
 Source18: check-kabi
 
@@ -406,9 +406,6 @@ Source9999: lastcommit.stat
 
 # empty final patch to facilitate testing of kernel patches
 Patch999999: linux-kernel-test.patch
-Patch1000: debrand-single-cpu.patch
-Patch1001: debrand-rh_taint.patch
-Patch1002: debrand-rh-i686-cpu.patch
 
 BuildRoot: %{_tmppath}/kernel-%{KVRA}-root
 
@@ -570,11 +567,11 @@ kernel-gcov includes the gcov graph and source files for gcov coverage collectio
 %endif
 
 %package -n kernel-abi-whitelists
-Summary: The CentOS Linux kernel ABI symbol whitelists
+Summary: The Red Hat Enterprise Linux kernel ABI symbol whitelists
 Group: System Environment/Kernel
 AutoReqProv: no
 %description -n kernel-abi-whitelists
-The kABI package contains information pertaining to the CentOS
+The kABI package contains information pertaining to the Red Hat Enterprise
 Linux kernel ABI, including lists of kernel symbols that are needed by
 external Linux kernel modules, and a yum plugin to aid enforcement.
 
@@ -717,9 +714,6 @@ cd linux-%{KVRA}
 cp $RPM_SOURCE_DIR/kernel-%{version}-*.config .
 
 ApplyOptionalPatch linux-kernel-test.patch
-ApplyOptionalPatch debrand-single-cpu.patch
-ApplyOptionalPatch debrand-rh_taint.patch
-ApplyOptionalPatch debrand-rh-i686-cpu.patch
 
 # Any further pre-build tree manipulations happen here.
 
@@ -878,7 +872,7 @@ BuildKernel() {
     fi
 # EFI SecureBoot signing, x86_64-only
 %ifarch x86_64
-    %pesign -s -i $KernelImage -o $KernelImage.signed -a %{SOURCE13} -c %{SOURCE13}
+    %pesign -s -i $KernelImage -o $KernelImage.signed -a %{SOURCE13} -c %{SOURCE14} -n %{pesign_name}
     mv $KernelImage.signed $KernelImage
 %endif
     $CopyKernel $KernelImage $RPM_BUILD_ROOT/%{image_install_path}/$InstallName-$KernelVer
@@ -1588,8 +1582,109 @@ fi
 %kernel_variant_files %{with_kdump} kdump
 
 %changelog
-* Thu Jan 25 2018 CentOS Sources <bugs@centos.org> - 3.10.0-693.17.1.el7
-- Apply debranding changes
+* Fri Feb 23 2018 Denys Vlasenko <dvlasenk@redhat.com> [3.10.0-693.21.1.el7]
+- [x86] platform/uv: Mark tsc_check_sync as an init function (Frank Ramsay) [1547870 1526066]
+- [x86] platform/uv: Add check of TSC state set by UV BIOS (Frank Ramsay) [1547870 1526066]
+- [x86] tsc: Provide a means to disable TSC ART (Frank Ramsay) [1547870 1526066]
+- [x86] tsc: Drastically reduce the number of firmware bug warnings (Frank Ramsay) [1547870 1526066]
+- [x86] tsc: Skip TSC test and error messages if already unstable (Frank Ramsay) [1547870 1526066]
+- [x86] tsc: Add option that TSC on Socket 0 being non-zero is valid (Frank Ramsay) [1547870 1526066]
+- [x86] tsc: Remove the TSC_ADJUST clamp (Frank Ramsay) [1547870 1526066]
+
+* Wed Feb 07 2018 Denys Vlasenko <dvlasenk@redhat.com> [3.10.0-693.20.1.el7]
+- [x86] locking/qspinlock: Fix kabi problem in a non-KVM/XEN VM (Waiman Long) [1539797 1533529]
+
+* Thu Feb 01 2018 Denys Vlasenko <dvlasenk@redhat.com> [3.10.0-693.19.1.el7]
+- [watchdog] hpwdt: remove indirect call in drivers/watchdog/hpwdt.c (Josh Poimboeuf) [1539649 1535644]
+- [kernel] x86/spec_ctrl: cleanup __ptrace_may_access (Josh Poimboeuf) [1539649 1535644]
+- [x86] bugs: Drop one "mitigation" from dmesg (Josh Poimboeuf) [1539649 1535644]
+- [x86] kvm: vmx: Make indirect call speculation safe (Josh Poimboeuf) [1539649 1535644]
+- [x86] kvm: x86: Make indirect calls in emulator speculation safe (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline: Optimize inline assembler for vmexit_fill_RSB (Josh Poimboeuf) [1539649 1535644]
+- [x86] mce: Make machine check speculation protected (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: fix ptrace IBPB optimization (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: Avoid returns in IBRS-disabled regions (Josh Poimboeuf) [1539649 1535644]
+- [x86] spectre/meltdown: avoid the vulnerability directory to weaken kernel security (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: Document retpolines and ibrs_enabled=3 (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: upgrade GCC retpoline warning to an error (Josh Poimboeuf) [1539649 1535644]
+- [x86] Use IBRS for firmware update path (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: stuff RSB on context switch with SMEP enabled (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: enforce sane combinations of IBRS and retpoline (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: use upstream RSB stuffing function (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: add ibrs_enabled=3 (ibrs_user) (Josh Poimboeuf) [1539649 1535644]
+- [kernel] x86/jump_label: warn on failed jump label patch (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: detect unretpolined modules (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline: Add LFENCE to the retpoline/RSB filling RSB macros (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline: Fill return stack buffer on vmexit (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline/xen: Convert Xen hypercall indirect jumps (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline/hyperv: Convert assembler indirect jumps (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline/ftrace: Convert ftrace assembler indirect jumps (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline/entry: Convert entry assembler indirect jumps (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline/crypto: Convert crypto assembler indirect jumps (Josh Poimboeuf) [1539649 1535644]
+- [x86] retpoline: Add initial retpoline support (Josh Poimboeuf) [1539649 1535644]
+- [x86] jump_label: add asm support for static keys (Josh Poimboeuf) [1539649 1535644]
+- [x86] asm: Make asm/alternative.h safe from assembly (Josh Poimboeuf) [1539649 1535644]
+- [tools] objtool: Support new GCC 6 switch jump table pattern (Josh Poimboeuf) [1539649 1535644]
+- [tools] objtool: Detect jumps to retpoline thunks (Josh Poimboeuf) [1539649 1535644]
+- [x86] spectre: Add boot time option to select Spectre v2 mitigation (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: print features changed by microcode loading (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: refactor the init and microcode loading paths (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: move initialization of X86_FEATURE_IBPB_SUPPORT (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: remove SPEC_CTRL_PCP_IBPB bit (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: remove ibrs_enabled variable (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: add ibp_disabled variable (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: add X86_FEATURE_IBP_DISABLE (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: remove IBP disable for AMD model 0x16 (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: remove performance measurements from documentation (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: make ipbp_enabled read-only (Josh Poimboeuf) [1539649 1535644]
+- [x86] spec_ctrl: remove ibpb_enabled=2 mode (Josh Poimboeuf) [1539649 1535644]
+- [x86] cpu: Implement CPU vulnerabilites sysfs functions (Josh Poimboeuf) [1539649 1535644]
+- [base] sysfs/cpu: Add vulnerability folder (Josh Poimboeuf) [1539649 1535644]
+- [x86] cpu: Merge bugs.c and bugs_64.c (Josh Poimboeuf) [1539649 1535644]
+- [x86] syscall: int80 must not clobber r12-15 (Josh Poimboeuf) [1539649 1535644]
+- [x86] syscall: change ia32_syscall() to create the full register frame in ia32_do_call() (Josh Poimboeuf) [1539649 1535644]
+- [x86] boot: Add early cmdline parsing for options with arguments (Josh Poimboeuf) [1539649 1535644]
+- [x86] boot: Pass in size to early cmdline parsing (Josh Poimboeuf) [1539649 1535644]
+- [x86] boot: Simplify early command line parsing (Josh Poimboeuf) [1539649 1535644]
+- [x86] boot: Fix early command-line parsing when partial word matches (Josh Poimboeuf) [1539649 1535644]
+- [x86] boot: Fix early command-line parsing when matching at end (Josh Poimboeuf) [1539649 1535644]
+- [scsi] storvsc: Fix scsi_cmd error assignments in storvsc_handle_error (Cathy Avery) [1536978 1502601]
+- [fs] nfs: RPC_MAX_AUTH_SIZE is in bytes ("J. Bruce Fields") [1533378 1495321]
+- [fs] nfsd: give out fewer session slots as limit approaches (Dave Wysochanski) [1533377 1492234]
+- [fs] nfsd: increase DRC cache limit (Dave Wysochanski) [1533377 1492234]
+- [x86] kvm: x86: fix RSM when PCID is non-zero (Paolo Bonzini) [1531662 1530711]
+- [x86] iommu/amd: Reduce delay waiting for command buffer space (Suravee Suthikulpanit) [1531456 1508644]
+- [x86] iommu/amd: Reduce amount of MMIO when submitting commands (Suravee Suthikulpanit) [1531456 1508644]
+- [x86] amd: Remove cmd_buf_size and evt_buf_size from struct amd_iommu (Suravee Suthikulpanit) [1531456 1508644]
+- [x86] amd: Fix the left value check of cmd buffer (Suravee Suthikulpanit) [1531456 1508644]
+- [x86] amd: Don't put completion-wait semaphore on stack (Suravee Suthikulpanit) [1531456 1508644]
+- [x86] kvm: svm: obey guest PAT (Suravee Suthikulpanit) [1530976 1478185]
+- [tty] serial: 8250_pci: Add Amazon PCI serial device ID (Vitaly Kuznetsov) [1530137 1527545]
+- [ata] libata: sata_down_spd_limit should return if driver has not recorded sstatus speed (David Milburn) [1530136 1457140]
+- [fs] nfs: fix a deadlock in nfs client initialization (Scott Mayhew) [1530135 1506382]
+- [fs] nfsv4.0: Fix a lock leak in nfs40_walk_client_list (Scott Mayhew) [1530135 1506382]
+- [fs] nfs: Create a common nfs4_match_client() function (Scott Mayhew) [1530135 1506382]
+- [fs] autofs - revert: take more care to not update last_used on path walk (Ian Kent) [1525994 1489542]
+- [vhost] vhost_net: correctly check tx avail during rx busy polling (Jason Wang) [1523784 1487551]
+- [crypto] shash - Fix has_key setting (Herbert Xu) [1522932 1505817]
+- [block] Fix a race between blk_cleanup_queue() and timeout handling (Ming Lei) [1522698 1513725]
+- [x86] tsc: Force TSC_ADJUST register to value >= zero (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Validate cpumask pointer before accessing it (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Try to adjust TSC if sync test fails (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Prepare warp test for TSC adjustment (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Move sync cleanup to a safe place (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Sync test only for the first cpu in a package (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Verify TSC_ADJUST from idle (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Store and check TSC ADJUST MSR (Prarit Bhargava) [1519850 1497055]
+- [x86] tsc: Detect random warps (Prarit Bhargava) [1519850 1497055]
+- [x86] kvm: mmu: always terminate page walks at level 1 (Paolo Bonzini) [1500382 1500381] {CVE-2017-12188}
+- [x86] kvm: nVMX: update last_nonleaf_level when initializing nested EPT (Denys Vlasenko) [1500382 1500381] {CVE-2017-12188}
+- [x86] kvm: fix singlestepping over syscall (Paolo Bonzini) [1464480 1464481] {CVE-2017-7518}
+
+* Sun Jan 21 2018 Denys Vlasenko <dvlasenk@redhat.com> [3.10.0-693.18.1.el7]
+- [md] raid5: fix a race condition in stripe batch (Nigel Croxon) [1535883 1496836]
+- [security] selinux: fix double free in selinux_parse_opts_str() (Paul Moore) [1532288 1456843]
+- [fs] nfs: revert "nfs: Move the flock open mode check into nfs_flock()" (Benjamin Coddington) [1531095 1497225]
 
 * Sun Jan 14 2018 Denys Vlasenko <dvlasenk@redhat.com> [3.10.0-693.17.1.el7]
 - [s390] locking/barriers: remove old gmb() macro definition (Denys Vlasenko) [1519788 1519786]