--- zzzz-none-000/linux-3.10.107/arch/powerpc/kvm/Kconfig	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/kvm/Kconfig	2021-02-04 17:41:59.000000000 +0000
@@ -21,6 +21,7 @@
 	select PREEMPT_NOTIFIERS
 	select ANON_INODES
 	select HAVE_KVM_EVENTFD
+	select SRCU
 
 config KVM_BOOK3S_HANDLER
 	bool
@@ -34,17 +35,20 @@
 	bool
 	select KVM_BOOK3S_HANDLER
 
-config KVM_BOOK3S_PR
+config KVM_BOOK3S_PR_POSSIBLE
 	bool
 	select KVM_MMIO
 	select MMU_NOTIFIER
 
+config KVM_BOOK3S_HV_POSSIBLE
+	bool
+
 config KVM_BOOK3S_32
 	tristate "KVM support for PowerPC book3s_32 processors"
 	depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
 	select KVM
 	select KVM_BOOK3S_32_HANDLER
-	select KVM_BOOK3S_PR
+	select KVM_BOOK3S_PR_POSSIBLE
 	---help---
 	  Support running unmodified book3s_32 guest kernels
 	  in virtual machines on book3s_32 host processors.
@@ -59,6 +63,7 @@
 	depends on PPC_BOOK3S_64
 	select KVM_BOOK3S_64_HANDLER
 	select KVM
+	select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
 	---help---
 	  Support running unmodified book3s_64 and book3s_32 guest kernels
 	  in virtual machines on book3s_64 host processors.
@@ -69,12 +74,14 @@
 	  If unsure, say N.
 
 config KVM_BOOK3S_64_HV
-	bool "KVM support for POWER7 and PPC970 using hypervisor mode in host"
-	depends on KVM_BOOK3S_64
+	tristate "KVM for POWER7 and later using hypervisor mode in host"
+	depends on KVM_BOOK3S_64 && PPC_POWERNV
+	select KVM_BOOK3S_HV_POSSIBLE
 	select MMU_NOTIFIER
+	select CMA
 	---help---
 	  Support running unmodified book3s_64 guest kernels in
-	  virtual machines on POWER7 and PPC970 processors that have
+	  virtual machines on POWER7 and newer processors that have
 	  hypervisor mode available to the host.
 
 	  If you say Y here, KVM will use the hardware virtualization
@@ -82,36 +89,47 @@
 	  guest operating systems will run at full hardware speed
 	  using supervisor and user modes.  However, this also means
 	  that KVM is not usable under PowerVM (pHyp), is only usable
-	  on POWER7 (or later) processors and PPC970-family processors,
-	  and cannot emulate a different processor from the host processor.
+	  on POWER7 or later processors, and cannot emulate a
+	  different processor from the host processor.
 
 	  If unsure, say N.
 
 config KVM_BOOK3S_64_PR
-	def_bool y
-	depends on KVM_BOOK3S_64 && !KVM_BOOK3S_64_HV
-	select KVM_BOOK3S_PR
-
-config KVM_BOOKE_HV
-	bool
-
-config KVM_440
-	bool "KVM support for PowerPC 440 processors"
-	depends on 44x
-	select KVM
-	select KVM_MMIO
+	tristate "KVM support without using hypervisor mode in host"
+	depends on KVM_BOOK3S_64
+	select KVM_BOOK3S_PR_POSSIBLE
 	---help---
-	  Support running unmodified 440 guest kernels in virtual machines on
-	  440 host processors.
-
-	  This module provides access to the hardware capabilities through
-	  a character device node named /dev/kvm.
+	  Support running guest kernels in virtual machines on processors
+	  without using hypervisor mode in the host, by running the
+	  guest in user mode (problem state) and emulating all
+	  privileged instructions and registers.
+
+	  This is not as fast as using hypervisor mode, but works on
+	  machines where hypervisor mode is not available or not usable,
+	  and can emulate processors that are different from the host
+	  processor, including emulating 32-bit processors on a 64-bit
+	  host.
+
+config KVM_BOOK3S_HV_EXIT_TIMING
+	bool "Detailed timing for hypervisor real-mode code"
+	depends on KVM_BOOK3S_HV_POSSIBLE && DEBUG_FS
+	---help---
+	  Calculate time taken for each vcpu in the real-mode guest entry,
+	  exit, and interrupt handling code, plus time spent in the guest
+	  and in nap mode due to idle (cede) while other threads are still
+	  in the guest.  The total, minimum and maximum times in nanoseconds
+	  together with the number of executions are reported in debugfs in
+	  kvm/vm#/vcpu#/timings.  The overhead is of the order of 30 - 40
+	  ns per exit on POWER8.
 
 	  If unsure, say N.
 
+config KVM_BOOKE_HV
+	bool
+
 config KVM_EXIT_TIMING
 	bool "Detailed exit timing"
-	depends on KVM_440 || KVM_E500V2 || KVM_E500MC
+	depends on KVM_E500V2 || KVM_E500MC
 	---help---
 	  Calculate elapsed time for every exit/enter cycle. A per-vcpu
 	  report is available in debugfs kvm/vm#_vcpu#_timing.
@@ -155,6 +173,7 @@
 	bool "KVM in-kernel MPIC emulation"
 	depends on KVM && E500
 	select HAVE_KVM_IRQCHIP
+	select HAVE_KVM_IRQFD
 	select HAVE_KVM_IRQ_ROUTING
 	select HAVE_KVM_MSI
 	help
@@ -166,6 +185,9 @@
 config KVM_XICS
 	bool "KVM in-kernel XICS emulation"
 	depends on KVM_BOOK3S_64 && !KVM_MPIC
+	select HAVE_KVM_IRQCHIP
+	select HAVE_KVM_IRQFD
+	default y
 	---help---
 	  Include support for the XICS (eXternal Interrupt Controller
 	  Specification) interrupt controller architecture used on