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Marc Zyngier e5a290c4ff arm/arm64: KVM: Add PSCI version selection API 
commit 85bd0ba1ff upstream.

Although we've implemented PSCI 0.1, 0.2 and 1.0, we expose either 0.1
or 1.0 to a guest, defaulting to the latest version of the PSCI
implementation that is compatible with the requested version. This is
no different from doing a firmware upgrade on KVM.

But in order to give a chance to hypothetical badly implemented guests
that would have a fit by discovering something other than PSCI 0.2,
let's provide a new API that allows userspace to pick one particular
version of the API.

This is implemented as a new class of "firmware" registers, where
we expose the PSCI version. This allows the PSCI version to be
save/restored as part of a guest migration, and also set to
any supported version if the guest requires it.

Cc: stable@vger.kernel.org #4.16
Reviewed-by: Christoffer Dall <cdall@kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-05-01 12:58:27 -07:00
..
boot ARM: dts: at91: sama5d4: fix pinctrl compatible string 2018-04-24 09:36:24 +02:00
common ARM: 8743/1: bL_switcher: add MODULE_LICENSE tag 2018-02-25 11:07:51 +01:00
configs ARM: socfpga_defconfig: Remove QSPI Sector 4K size force 2018-05-01 12:58:22 -07:00
crypto crypto: arm,arm64 - Fix random regeneration of S_shipped 2018-04-08 14:26:32 +02:00
firmware
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include arm/arm64: KVM: Add PSCI version selection API 2018-05-01 12:58:27 -07:00
kernel kernel/exit.c: export abort() to modules 2018-02-13 10:19:49 +01:00
kvm arm/arm64: KVM: Add PSCI version selection API 2018-05-01 12:58:27 -07:00
lib ARM: 8731/1: Fix csum_partial_copy_from_user() stack mismatch 2018-03-03 10:24:24 +01:00
mach-actions License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-alpine License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-artpec
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mach-asm9260
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mach-aspeed
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mach-at91 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-axxia License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-bcm License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-berlin
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mach-clps711x License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-cns3xxx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-davinci License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-digicolor License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-dove License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-ebsa110 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-efm32 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-ep93xx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-exynos ARM: EXYNOS: Fix coupled CPU idle freeze on Exynos4210 2018-04-24 09:36:24 +02:00
mach-footbridge License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-gemini License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-highbank License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-hisi License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-imx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-integrator License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-iop13xx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-iop32x License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-iop33x License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-ixp4xx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-keystone License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-ks8695 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-lpc18xx
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mach-lpc32xx
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mach-mediatek
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mach-meson
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mach-mmp License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-moxart
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mach-mv78xx0 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-mvebu ARM: mvebu: Fix broken PL310_ERRATA_753970 selects 2018-03-08 22:41:23 -08:00
mach-mxs
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mach-netx
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mach-nomadik
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mach-nspire
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mach-omap1 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-omap2 ARM: omap2: hide omap3_save_secure_ram on non-OMAP3 builds 2018-03-15 10:54:22 +01:00
mach-orion5x License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-oxnas
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mach-picoxcell
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mach-prima2 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-pxa ARM: pxa/tosa-bt: add MODULE_LICENSE tag 2018-02-22 15:42:32 +01:00
mach-qcom
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mach-realview
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mach-rockchip Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm 2017-09-12 06:10:44 -07:00
mach-rpc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-s3c24xx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-s3c64xx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-s5pv210
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mach-sa1100 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-shmobile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-socfpga License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-spear License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-sti
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mach-stm32
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mach-sunxi
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mach-tango License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-tegra License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-u300 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-uniphier License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-ux500 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-versatile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-vexpress License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-vt8500 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-w90x900 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-zx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach-zynq License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mm ARM: 8721/1: mm: dump: check hardware RO bit for LPAE 2017-11-30 08:40:40 +00:00
net ARM: net: bpf: clarify tail_call index 2018-01-31 14:03:44 +01:00
nwfpe License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
oprofile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
plat-iop License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
plat-omap ARM: OMAP: Fix SRAM W+X mapping 2018-04-08 14:26:26 +02:00
plat-orion ARM: orion: fix orion_ge00_switch_board_info initialization 2018-03-08 22:41:22 -08:00
plat-pxa
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plat-samsung
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plat-versatile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
probes License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tools License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vdso License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfp ARM: 8746/1: vfp: Go back to clearing vfp_current_hw_state[] 2018-04-08 14:26:26 +02:00
xen arm/xen: don't inclide rwlock.h directly. 2017-10-26 16:58:17 -04:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig-nommu License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.debug License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile ARM: 8716/1: pass endianness info to sparse 2017-11-01 19:14:49 +00:00