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
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asm	KVM: PPC: Book3S HV: Enable guests to use large decrementer mode on POWER9	2017-06-19 14:02:04 +10:00
uapi/asm	powerpc updates for 4.12 part 2	2017-05-12 10:04:09 -07:00