mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
a7f7f6248d
Since commit 84af7a6194 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.
This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.
There are a variety of indentation styles found.
a) 4 spaces + '---help---'
b) 7 spaces + '---help---'
c) 8 spaces + '---help---'
d) 1 space + 1 tab + '---help---'
e) 1 tab + '---help---' (correct indentation)
f) 1 tab + 1 space + '---help---'
g) 1 tab + 2 spaces + '---help---'
In order to convert all of them to 1 tab + 'help', I ran the
following commend:
$ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
208 lines
5.8 KiB
Plaintext
208 lines
5.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# KVM configuration
|
|
#
|
|
|
|
source "virt/kvm/Kconfig"
|
|
|
|
menuconfig VIRTUALIZATION
|
|
bool "Virtualization"
|
|
help
|
|
Say Y here to get to see options for using your Linux host to run
|
|
other operating systems inside virtual machines (guests).
|
|
This option alone does not add any kernel code.
|
|
|
|
If you say N, all options in this submenu will be skipped and
|
|
disabled.
|
|
|
|
if VIRTUALIZATION
|
|
|
|
config KVM
|
|
bool
|
|
select PREEMPT_NOTIFIERS
|
|
select HAVE_KVM_EVENTFD
|
|
select HAVE_KVM_VCPU_ASYNC_IOCTL
|
|
select SRCU
|
|
select KVM_VFIO
|
|
select IRQ_BYPASS_MANAGER
|
|
select HAVE_KVM_IRQ_BYPASS
|
|
|
|
config KVM_BOOK3S_HANDLER
|
|
bool
|
|
|
|
config KVM_BOOK3S_32_HANDLER
|
|
bool
|
|
select KVM_BOOK3S_HANDLER
|
|
select KVM_MMIO
|
|
|
|
config KVM_BOOK3S_64_HANDLER
|
|
bool
|
|
select KVM_BOOK3S_HANDLER
|
|
select PPC_DAWR_FORCE_ENABLE
|
|
|
|
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_POSSIBLE
|
|
help
|
|
Support running unmodified book3s_32 guest kernels
|
|
in virtual machines on book3s_32 host processors.
|
|
|
|
This module provides access to the hardware capabilities through
|
|
a character device node named /dev/kvm.
|
|
|
|
If unsure, say N.
|
|
|
|
config KVM_BOOK3S_64
|
|
tristate "KVM support for PowerPC book3s_64 processors"
|
|
depends on PPC_BOOK3S_64
|
|
select KVM_BOOK3S_64_HANDLER
|
|
select KVM
|
|
select KVM_BOOK3S_PR_POSSIBLE if !KVM_BOOK3S_HV_POSSIBLE
|
|
select SPAPR_TCE_IOMMU if IOMMU_SUPPORT && (PPC_PSERIES || PPC_POWERNV)
|
|
help
|
|
Support running unmodified book3s_64 and book3s_32 guest kernels
|
|
in virtual machines on book3s_64 host processors.
|
|
|
|
This module provides access to the hardware capabilities through
|
|
a character device node named /dev/kvm.
|
|
|
|
If unsure, say N.
|
|
|
|
config KVM_BOOK3S_64_HV
|
|
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 newer processors that have
|
|
hypervisor mode available to the host.
|
|
|
|
If you say Y here, KVM will use the hardware virtualization
|
|
facilities of POWER7 (and later) processors, meaning that
|
|
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 cannot emulate a
|
|
different processor from the host processor.
|
|
|
|
If unsure, say N.
|
|
|
|
config KVM_BOOK3S_64_PR
|
|
tristate "KVM support without using hypervisor mode in host"
|
|
depends on KVM_BOOK3S_64
|
|
select KVM_BOOK3S_PR_POSSIBLE
|
|
help
|
|
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_E500V2 || KVM_E500MC
|
|
help
|
|
Calculate elapsed time for every exit/enter cycle. A per-vcpu
|
|
report is available in debugfs kvm/vm#_vcpu#_timing.
|
|
The overhead is relatively small, however it is not recommended for
|
|
production environments.
|
|
|
|
If unsure, say N.
|
|
|
|
config KVM_E500V2
|
|
bool "KVM support for PowerPC E500v2 processors"
|
|
depends on E500 && !PPC_E500MC
|
|
select KVM
|
|
select KVM_MMIO
|
|
select MMU_NOTIFIER
|
|
help
|
|
Support running unmodified E500 guest kernels in virtual machines on
|
|
E500v2 host processors.
|
|
|
|
This module provides access to the hardware capabilities through
|
|
a character device node named /dev/kvm.
|
|
|
|
If unsure, say N.
|
|
|
|
config KVM_E500MC
|
|
bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
|
|
depends on PPC_E500MC
|
|
select KVM
|
|
select KVM_MMIO
|
|
select KVM_BOOKE_HV
|
|
select MMU_NOTIFIER
|
|
help
|
|
Support running unmodified E500MC/E5500/E6500 guest kernels in
|
|
virtual machines on E500MC/E5500/E6500 host processors.
|
|
|
|
This module provides access to the hardware capabilities through
|
|
a character device node named /dev/kvm.
|
|
|
|
If unsure, say N.
|
|
|
|
config KVM_MPIC
|
|
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
|
|
Enable support for emulating MPIC devices inside the
|
|
host kernel, rather than relying on userspace to emulate.
|
|
Currently, support is limited to certain versions of
|
|
Freescale's MPIC implementation.
|
|
|
|
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
|
|
IBM POWER (pSeries) servers.
|
|
|
|
config KVM_XIVE
|
|
bool
|
|
default y
|
|
depends on KVM_XICS && PPC_XIVE_NATIVE && KVM_BOOK3S_HV_POSSIBLE
|
|
|
|
endif # VIRTUALIZATION
|