Thomas Gleixner 04dcbdb805 x86/speculation/mds: Clear CPU buffers on exit to user ... Add a static key which controls the invocation of the CPU buffer clear mechanism on exit to user space and add the call into prepare_exit_to_usermode() and do_nmi() right before actually returning. Add documentation which kernel to user space transition this covers and explain why some corner cases are not mitigated. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Borislav Petkov <bp@suse.de> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Jon Masters <jcm@redhat.com> Tested-by: Jon Masters <jcm@redhat.com>		2019-03-06 21:52:13 +01:00
..
boot	x86/boot/compressed/64: Do not corrupt EDX on EFER.LME=1 setting	2019-02-06 18:56:18 +01:00
configs	PCI: consolidate PCI config entry in drivers/pci	2018-11-23 11:45:34 +09:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2018-12-27 13:53:32 -08:00
entry	x86/speculation/mds: Clear CPU buffers on exit to user	2019-03-06 21:52:13 +01:00
events	perf/x86: Add check_period PMU callback	2019-02-11 11:46:43 +01:00
hyperv	x86/hyper-v: Add HvFlushGuestAddressList hypercall support	2018-12-21 11:28:39 +01:00
ia32	x86/a.out: Clear the dump structure initially	2019-02-13 12:10:51 +01:00
include	x86/speculation/mds: Clear CPU buffers on exit to user	2019-03-06 21:52:13 +01:00
kernel	x86/speculation/mds: Clear CPU buffers on exit to user	2019-03-06 21:52:13 +01:00
kvm	x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests	2019-03-06 21:52:12 +01:00
lib	x86: explicitly align IO accesses in memcpy_{to,from}io	2019-02-01 09:07:48 -08:00
math-emu	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
mm	Revert "x86/fault: BUG() when uaccess helpers fault on kernel addresses"	2019-02-25 09:10:51 -08:00
net	bpf: Add bpf_line_info support	2018-12-09 13:54:38 -08:00
oprofile	x86/oprofile: Fix bogus GCC-8 warning in nmi_setup()	2018-02-21 09:54:17 +01:00
pci	pci-v4.21-changes	2019-01-05 17:57:34 -08:00
platform	x86/platform/UV: Use efi_runtime_lock to serialise BIOS calls	2019-02-15 15:19:56 +01:00
power	mm: remove include/linux/bootmem.h	2018-10-31 08:54:16 -07:00
purgatory	kbuild: move bin2c back to scripts/ from scripts/basic/	2018-07-18 01:18:05 +09:00
ras
realmode	x86-64/realmode: Add instruction suffix	2018-02-20 09:33:41 +01:00
tools	x86: Clean up 'sizeof x' => 'sizeof(x)'	2018-10-29 07:13:28 +01:00
um	Remove 'type' argument from access_ok() function	2019-01-03 18:57:57 -08:00
video
xen	xen: fixes for 5.0-rc3	2019-01-19 05:53:41 +12:00
.gitignore	x86/build: Add arch/x86/tools/insn_decoder_test to .gitignore	2018-02-13 14:10:29 +01:00
Kbuild	KVM: x86: Allow Qemu/KVM to use PVH entry point	2018-12-13 13:41:49 -05:00
Kconfig	x86/resctrl: Avoid confusion over the new X86_RESCTRL config	2019-02-02 10:34:52 +01:00
Kconfig.cpu	x86/cpu: Create Hygon Dhyana architecture support file	2018-09-27 16:14:05 +02:00
Kconfig.debug	x86/kconfig: Remove redundant 'default n' lines from all x86 Kconfig's	2018-10-17 08:39:42 +02:00
Makefile	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
Makefile_32.cpu
Makefile.um	x86, powerpc: Remove -funit-at-a-time compiler option entirely	2018-12-09 11:55:32 +01:00