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* [RFC PATCH 00/12] Add SDEI support for arm64
@ 2019-09-24 15:21 Heyi Guo
  2019-09-24 15:21 ` [RFC PATCH 01/12] linux-headers: import arm_sdei.h Heyi Guo
                   ` (14 more replies)
  0 siblings, 15 replies; 25+ messages in thread
From: Heyi Guo @ 2019-09-24 15:21 UTC (permalink / raw)
  To: qemu-arm, qemu-devel, linux-arm-kernel, kvmarm
  Cc: Mark Rutland, Peter Maydell, Marc Zyngier, James Morse, Heyi Guo,
	wanghaibin.wang, Dave Martin

As promised, this is the first RFC patch set for arm64 SDEI support.
Key points:
- We propose to only support kvm enabled arm64 virtual machines, for
  non-kvm VMs can emulate EL3 and have Trusted Firmware run on it,
  which has a builtin SDEI dispatcher.
- New kvm capability KVM_CAP_FORWARD_HYPERCALL is added to probe if
  kvm supports forwarding hypercalls, and the capability should be
  enabled explicitly. PSCI can be set as exception for backward
  compatibility.
- We make the dispatcher as a logical device, to save the states
  during migration or save/restore operation; only one instance is
  allowed in one VM.
- We use qemu_irq as the bridge for other qemu modules to switch from
  irq injection to SDEI event trigger after VM binds the interrupt to
  SDEI event. We use qemu_irq_intercept_in() to override qemu_irq
  handler with SDEI event trigger, and a new interface
  qemu_irq_remove_intercept() is added to restore the handler to
  default one (i.e. ARM GIC).

More details are in the commit message of each patch.

Basic tests are done by emulating a watchdog timer and triggering SDEI
event in every 10s.

As this is the first rough RFC, please focus on the interfaces and
framework first. We can refine the code for several rounds after the
big things have been determined.

Please give your comments and suggestions.

Thanks,
HG

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@arm.com>

Heyi Guo (12):
  linux-headers: import arm_sdei.h
  arm/sdei: add virtual device framework
  arm/sdei: add support to handle SDEI requests from guest
  arm/sdei: add system reset callback
  arm/sdei: add support to trigger event by GIC interrupt ID
  core/irq: add qemu_irq_remove_intercept interface
  arm/sdei: override qemu_irq handler when binding interrupt
  arm/sdei: add support to register interrupt bind notifier
  linux-headers/kvm.h: add capability to forward hypercall
  arm/sdei: check KVM cap and enable SDEI
  arm/kvm: handle guest exit of hypercall
  virt/acpi: add SDEI table if SDEI is enabled

 hw/arm/virt-acpi-build.c       |   16 +
 hw/core/irq.c                  |   11 +
 include/hw/acpi/acpi-defs.h    |    5 +
 include/hw/irq.h               |    8 +-
 linux-headers/linux/arm_sdei.h |   73 ++
 linux-headers/linux/kvm.h      |    3 +
 target/arm/Makefile.objs       |    1 +
 target/arm/kvm.c               |   17 +
 target/arm/sdei.c              | 1518 ++++++++++++++++++++++++++++++++++++++++
 target/arm/sdei.h              |   60 ++
 target/arm/sdei_int.h          |  109 +++
 11 files changed, 1819 insertions(+), 2 deletions(-)
 create mode 100644 linux-headers/linux/arm_sdei.h
 create mode 100644 target/arm/sdei.c
 create mode 100644 target/arm/sdei.h
 create mode 100644 target/arm/sdei_int.h

-- 
1.8.3.1



^ permalink raw reply	[flat|nested] 25+ messages in thread

end of thread, other threads:[~2019-10-10 14:03 UTC | newest]

Thread overview: 25+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-24 15:21 [RFC PATCH 00/12] Add SDEI support for arm64 Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 01/12] linux-headers: import arm_sdei.h Heyi Guo
2019-09-24 15:39   ` Michael S. Tsirkin
2019-09-25  8:12     ` Guoheyi
2019-09-24 15:21 ` [RFC PATCH 02/12] arm/sdei: add virtual device framework Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 03/12] arm/sdei: add support to handle SDEI requests from guest Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 04/12] arm/sdei: add system reset callback Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 05/12] arm/sdei: add support to trigger event by GIC interrupt ID Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 06/12] core/irq: add qemu_irq_remove_intercept interface Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 07/12] arm/sdei: override qemu_irq handler when binding interrupt Heyi Guo
2019-09-30 13:19   ` Peter Maydell
2019-10-09 13:06     ` Guoheyi
2019-09-24 15:21 ` [RFC PATCH 08/12] arm/sdei: add support to register interrupt bind notifier Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 09/12] linux-headers/kvm.h: add capability to forward hypercall Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 10/12] arm/sdei: check KVM cap and enable SDEI Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 11/12] arm/kvm: handle guest exit of hypercall Heyi Guo
2019-09-24 15:21 ` [RFC PATCH 12/12] virt/acpi: add SDEI table if SDEI is enabled Heyi Guo
2019-10-10  9:15   ` Igor Mammedov
2019-10-10 13:08     ` Guoheyi
2019-10-10 13:57       ` Igor Mammedov
2019-10-10 14:01   ` Michael S. Tsirkin
2019-09-25  6:54 ` [RFC PATCH 00/12] Add SDEI support for arm64 no-reply
2019-09-25  6:58 ` no-reply
2019-09-30 13:15 ` Peter Maydell
2019-10-09 13:42   ` Guoheyi

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