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linux-next/arch/powerpc
Paul Mackerras 1bc3fe818c KVM: PPC: Book3S HV: Enable guests to use large decrementer mode on POWER9
This allows userspace (e.g. QEMU) to enable large decrementer mode for
the guest when running on a POWER9 host, by setting the LPCR_LD bit in
the guest LPCR value.  With this, the guest exit code saves 64 bits of
the guest DEC value on exit.  Other places that use the guest DEC
value check the LPCR_LD bit in the guest LPCR value, and if it is set,
omit the 32-bit sign extension that would otherwise be done.

This doesn't change the DEC emulation used by PR KVM because PR KVM
is not supported on POWER9 yet.

This is partly based on an earlier patch by Oliver O'Halloran.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2017-06-19 14:02:04 +10:00
..
boot devicetree: Move include prefixes from arch to separate directory 2017-05-18 23:55:48 -07:00
configs powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-05-02 15:53:46 -07:00
include KVM: PPC: Book3S HV: Enable guests to use large decrementer mode on POWER9 2017-06-19 14:02:04 +10:00
kernel powerpc/kprobes: Fix handling of instruction emulation on probe re-entry 2017-05-16 13:11:07 +10:00
kvm KVM: PPC: Book3S HV: Enable guests to use large decrementer mode on POWER9 2017-06-19 14:02:04 +10:00
lib powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm powerpc/mm: Fix crash in page table dump with huge pages 2017-05-17 11:56:33 +10:00
net powerpc updates for 4.11 part 1. 2017-02-22 10:30:38 -08:00
oprofile ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
perf powerpc/perf: Add Power8 mem_access event to sysfs 2017-04-19 20:00:23 +10:00
platforms powerpc updates for 4.12 part 2 2017-05-12 10:04:09 -07:00
purgatory kexec, x86/purgatory: Unbreak it and clean it up 2017-03-10 20:55:09 +01:00
sysdev powerpc updates for 4.12 part 2 2017-05-12 10:04:09 -07:00
tools powerpc: Add arch/powerpc/tools directory 2017-04-28 21:26:53 +10:00
xmon powerpc/xmon: Teach xmon oops about radix vectors 2017-05-01 18:52:58 +10:00
Kconfig powerpc updates for 4.12 part 2 2017-05-12 10:04:09 -07:00
Kconfig.debug powerpc/xmon: Enable disassembly files (compilation changes) 2017-02-15 20:02:42 +11:00
Makefile powerpc: Add arch/powerpc/tools directory 2017-04-28 21:26:53 +10:00
Makefile.postlink powerpc: Fix distclean with Makefile.postlink 2017-05-09 19:24:23 +10:00