mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
25a2150bee
This makes it possible to use IRQFDs on platforms that use the XICS interrupt controller. To do this we implement kvm_irq_map_gsi() and kvm_irq_map_chip_pin() in book3s_xics.c, so as to provide a 1-1 mapping between global interrupt numbers and XICS interrupt source numbers. For now, all interrupts are mapped as "IRQCHIP" interrupts, and no MSI support is provided. This means that kvm_set_irq can now get called with level == 0 or 1 as well as the powerpc-specific values KVM_INTERRUPT_SET, KVM_INTERRUPT_UNSET and KVM_INTERRUPT_SET_LEVEL. We change ics_deliver_irq() to accept all those values, and remove its report_status argument, as it is always false, given that we don't support KVM_IRQ_LINE_STATUS. This also adds support for interrupt ack notifiers to the XICS code so that the IRQFD resampler functionality can be supported. Signed-off-by: Paul Mackerras <paulus@samba.org> Tested-by: Eric Auger <eric.auger@linaro.org> Tested-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
183 lines
5.0 KiB
Plaintext
183 lines
5.0 KiB
Plaintext
#
|
|
# 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 ANON_INODES
|
|
select HAVE_KVM_EVENTFD
|
|
|
|
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
|
|
|
|
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
|
|
---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 support for POWER7 and PPC970 using hypervisor mode in host"
|
|
depends on KVM_BOOK3S_64
|
|
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
|
|
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 PPC970-family 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_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
|
|
---help---
|
|
Include support for the XICS (eXternal Interrupt Controller
|
|
Specification) interrupt controller architecture used on
|
|
IBM POWER (pSeries) servers.
|
|
|
|
source drivers/vhost/Kconfig
|
|
|
|
endif # VIRTUALIZATION
|