linux/arch/powerpc/platforms
Laurent Dufour 6ce56e1ac3 powerpc/pseries: export LPAR security flavor in lparcfg
This is helpful to read the security flavor from inside the LPAR.

In /sys/kernel/debug/powerpc/security_features it can be seen if
mitigations are on or off but not the level set through the ASMI menu.
Furthermore, reporting it through /proc/powerpc/lparcfg allows an easy
processing by the lparstat command [1].

Export it like this in /proc/powerpc/lparcfg:

  $ grep security_flavor /proc/powerpc/lparcfg
  security_flavor=1

Value follows what is documented on the IBM support page [2]:

  0 Speculative execution fully enabled
  1 Speculative execution controls to mitigate user-to-kernel attacks
  2 Speculative execution controls to mitigate user-to-kernel and
    user-to-user side-channel attacks

[1] https://groups.google.com/g/powerpc-utils-devel/c/NaKXvdyl_UI/m/wa2stpIDAQAJ
[2] https://www.ibm.com/support/pages/node/715841

Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210305125554.5165-1-ldufour@linux.ibm.com
2021-03-26 23:19:41 +11:00
..
4xx powerpc/4xx: Don't unmap NULL mbase 2020-05-28 23:24:36 +10:00
8xx powerpc: bad_page_fault get registers from regs 2021-02-09 00:02:09 +11:00
40x powerpc: Remove IBM405 Erratum #77 2020-05-28 23:24:36 +10:00
44x powerpc/akebono: Fix unmet dependency errors 2021-02-09 00:10:50 +11:00
52xx powerpc/time: Avoid using get_tbl() 2021-02-11 23:35:13 +11:00
82xx powerpc/82xx/*: Move PHB discovery 2021-02-09 00:02:06 +11:00
83xx powerpc/83xx: Fix build error when CONFIG_PCI=n 2021-02-11 23:28:51 +11:00
85xx powerpc/85xx: Fix declaration made after definition 2020-11-19 14:50:13 +11:00
86xx mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
512x powerpc/512x: Move PHB discovery 2021-02-09 00:02:05 +11:00
amigaone powerpc/amigaone: Make amigaone_discover_phbs() static 2021-02-11 23:28:51 +11:00
cell idmapped-mounts-v5.12 2021-02-23 13:39:45 -08:00
chrp powerpc/chrp: Make hydra_init() static 2021-03-24 14:09:29 +11:00
embedded6xx powerpc/embedded6xx/mve5100: Move PHB discovery 2021-02-09 00:02:07 +11:00
maple powerpc/pci: Move PHB discovery for PCI_DN using platforms 2021-02-09 00:01:05 +11:00
pasemi powerpc/pasemi: Move PHB discovery 2021-02-09 00:02:07 +11:00
powermac powerpc/pci: Move PHB discovery for PCI_DN using platforms 2021-02-09 00:01:05 +11:00
powernv Modules updates for v5.12 2021-02-23 10:15:33 -08:00
ps3 powerpc/ps3: make system bus's remove and shutdown callbacks return void 2020-12-04 01:01:22 +11:00
pseries powerpc/pseries: export LPAR security flavor in lparcfg 2021-03-26 23:19:41 +11:00
Kconfig powerpc: Remove CONFIG_PPC601_SYNC_FIX 2020-10-08 21:17:13 +11:00
Kconfig.cputype powerpc/32s: Make support for 603 and 604+ selectable 2020-12-09 16:48:59 +11:00
Makefile powerpc: Add -Werror at arch/powerpc level 2018-10-19 00:56:17 +11:00
fsl_uli1575.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00