linux_dsm_epyc7002/arch/x86
Ashok Raj a5321aec64 x86/microcode: Synchronize late microcode loading
Original idea by Ashok, completely rewritten by Borislav.

Before you read any further: the early loading method is still the
preferred one and you should always do that. The following patch is
improving the late loading mechanism for long running jobs and cloud use
cases.

Gather all cores and serialize the microcode update on them by doing it
one-by-one to make the late update process as reliable as possible and
avoid potential issues caused by the microcode update.

[ Borislav: Rewrite completely. ]

Co-developed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Tested-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Arjan Van De Ven <arjan.van.de.ven@intel.com>
Link: https://lkml.kernel.org/r/20180228102846.13447-8-bp@alien8.de
2018-03-08 10:19:26 +01:00
..
boot Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2018-01-31 13:12:31 -08:00
configs
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-02-12 08:57:21 -08:00
entry x86/vsyscall/64: Drop "native" vsyscalls 2018-03-08 06:48:15 +01:00
events Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-14 17:02:15 -08:00
hyperv KVM changes for 4.16 2018-02-10 13:16:35 -08:00
ia32 x86/entry: Do not special-case clone(2) in compat entry 2018-03-07 07:57:31 +01:00
include x86/vsyscall/64: Drop "native" vsyscalls 2018-03-08 06:48:15 +01:00
kernel x86/microcode: Synchronize late microcode loading 2018-03-08 10:19:26 +01:00
kvm KVM/VMX: Optimize vmx_vcpu_run() and svm_vcpu_run() by marking the RDMSR path as unlikely() 2018-02-23 08:24:36 +01:00
lib Revert "x86/retpoline: Simplify vmexit_fill_RSB()" 2018-02-20 09:38:26 +01:00
math-emu
mm x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table 2018-03-01 09:48:27 +01:00
net bpf, x86_64: remove obsolete exception handling from div/mod 2018-01-26 16:42:06 -08:00
oprofile
pci pci-v4.16-changes 2018-02-06 09:59:40 -08:00
platform Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-02-14 17:02:15 -08:00
power x86: hibernate: fix swsusp_arch_resume() prototype 2018-02-07 12:18:23 +01:00
purgatory
ras
realmode x86-64/realmode: Add instruction suffix 2018-02-20 09:33:41 +01:00
tools
um
video
xen x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend 2018-02-28 16:03:19 +01:00
.gitignore
Kbuild
Kconfig x86/vsyscall/64: Drop "native" vsyscalls 2018-03-08 06:48:15 +01:00
Kconfig.cpu
Kconfig.debug Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-01-30 13:01:09 -08:00
Makefile objtool, retpolines: Integrate objtool with retpoline support more closely 2018-02-21 16:54:32 +01:00
Makefile_32.cpu
Makefile.um