Linus Torvalds c5f1e32e32 Fix the "IBPB mitigated RETBleed" mode of operation on AMD CPUs ... (not turned on by default), which also need STIBP enabled (if available) to be '100% safe' on even the shortest speculation windows. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmL3fqcRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gnuw/6AighFp+Gp4qXP1DIVU+acVnZsxbdt7GA WGs/JJfKYsKpWvDGFxnwtF2V1Imq8XVRPVPyFKvLQiBs2h8vNcVkgIvJsdeTFsqQ uUwUaYgDXuhLYaFpnMGouoeA3iw2zf/CY5ZJX79Nl/CwNwT7FxiLbu+JF/I2Yc0V yddiQ8xgT0VJhaBcUTsD2qFl8wjpxer7gNBFR4ujiYWXHag3qKyZuaySmqCz4xhd 4nyhJCp34548MsTVXDys2gnYpgLWweB9zOPvH4+GgtiFF3UJxRMhkB9NzfZq1l5W tCjgGupb3vVoXOVb/xnXyZlPbdFNqSAja7iOXYdmNUSURd7LC0PYHpVxN0rkbFcd V6noyU3JCCp86ceGTC0u3Iu6LLER6RBGB0gatVlzomWLjTEiC806eo23CVE22cnk poy7FO3RWa+q1AqWsEzc3wr14ZgSKCBZwwpn6ispT/kjx9fhAFyKtH2/Sznx26GH yKOF7pPCIXjCpcMnNoUu8cVyzfk0g3kOWQtKjaL9WfeyMtBaHhctngR0s1eCxZNJ rBlTs+YO7fO42unZEExgvYekBzI70aThIkvxahKEWW48owWph+i/sn5gzdVF+ynR R4PGeylfd8ZXr21cG2rG9250JLwqzhsxnAGvNjYg1p/hdyrzLTGWHIc9r9BU9000 mmOP9uY6Cjc= =Ac6x -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2022-08-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Ingo Molnar: "Fix the 'IBPB mitigated RETBleed' mode of operation on AMD CPUs (not turned on by default), which also need STIBP enabled (if available) to be '100% safe' on even the shortest speculation windows" * tag 'x86-urgent-2022-08-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bugs: Enable STIBP for IBPB mitigated RETBleed		2022-08-13 14:24:12 -07:00
..
mce	x86/mce: Check whether writes to MCA_STATUS are getting ignored	2022-06-28 12:08:10 +02:00
microcode	x86/microcode: Remove unnecessary perf callback	2022-05-31 09:31:19 +02:00
mtrr	x86/mtrr: Replace deprecated CPU-hotplug functions.	2021-08-10 14:46:27 +02:00
resctrl	x86: Replace cpumask_weight() with cpumask_empty() where appropriate	2022-04-10 22:35:38 +02:00
sgx	- SGX2 ISA support which makes enclave memory management much more	2022-08-05 10:47:40 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
acrn.c	x86/acrn: Introduce acrn_cpuid_base() and hypervisor feature bits	2021-02-09 10:58:18 +01:00
amd.c	x86/rdrand: Remove "nordrand" flag in favor of "random.trust_cpu"	2022-07-18 15:04:04 +02:00
aperfmperf.c	x86/aperfmperf: Integrate the fallback code from show_cpuinfo()	2022-04-27 20:22:20 +02:00
bugs.c	Fix the "IBPB mitigated RETBleed" mode of operation on AMD CPUs	2022-08-13 14:24:12 -07:00
cacheinfo.c	x86/cacheinfo: move shared cache map definitions	2022-07-17 17:31:40 -07:00
centaur.c	x86/cpu/centaur: Add Centaur family >=7 CPUs initialization support	2020-09-11 10:53:19 +02:00
common.c	x86/speculation: Add RSB VM Exit protections	2022-08-03 11:23:52 +02:00
cpu.h	x86/cpu/amd: Add Spectral Chicken	2022-06-27 10:34:00 +02:00
cpuid-deps.c	x86/fpu: Optimize out sigframe xfeatures when in init state	2021-11-03 22:42:35 +01:00
cyrix.c	x86/cyrix: include header linux/isa-dma.h	2022-07-26 14:03:12 -05:00
feat_ctl.c	x86/cpu: Add new VMX feature, Tertiary VM-Execution control	2022-06-08 04:47:13 -04:00
hygon.c	x86/cpu/amd: Add Spectral Chicken	2022-06-27 10:34:00 +02:00
hypervisor.c	x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable	2019-07-17 08:09:59 +02:00
intel_epb.c	x86: intel_epb: Allow model specific normal EPB value	2022-01-04 16:37:23 +01:00
intel_pconfig.c
intel.c	x86/bus_lock: Don't assume the init value of DEBUGCTLMSR.BUS_LOCK_DETECT to be zero	2022-08-02 13:42:00 +02:00
Makefile	x86/CPU: Add support for Vortex CPUs	2021-10-21 15:49:07 +02:00
match.c	x86/cpu: Add a steppings field to struct x86_cpu_id	2020-04-20 12:19:21 +02:00
mkcapflags.sh	x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_*	2020-01-13 18:36:02 +01:00
mshyperv.c	hyperv-next for 5.19	2022-05-28 11:39:01 -07:00
perfctr-watchdog.c	x86/nmi_watchdog: Fix old-style NMI watchdog regression on old Intel CPUs	2021-06-10 10:04:40 +02:00
powerflags.c
proc.c	x86/aperfmperf: Integrate the fallback code from show_cpuinfo()	2022-04-27 20:22:20 +02:00
rdrand.c	x86/rdrand: Remove "nordrand" flag in favor of "random.trust_cpu"	2022-07-18 15:04:04 +02:00
scattered.c	x86/speculation: Disable RRSBA behavior	2022-07-09 13:12:45 +02:00
topology.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
transmeta.c
tsx.c	x86/tsx: Disable TSX development mode at boot	2022-04-11 09:58:40 +02:00
umc.c
umwait.c	KVM: VMX: Stop context switching MSR_IA32_UMWAIT_CONTROL	2020-06-22 20:54:57 -04:00
vmware.c	x86/vmware: Use BIT() macro for shifting	2022-06-22 11:23:14 +02:00
vortex.c	x86/CPU: Add support for Vortex CPUs	2021-10-21 15:49:07 +02:00
zhaoxin.c	x86/cpu: Reinitialize IA32_FEAT_CTL MSR on BSP during wakeup	2020-06-15 14:18:37 +02:00