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From: Hikaru Nishida <hikalium@chromium.org>
To: linux-kernel@vger.kernel.org, dme@dme.org, tglx@linutronix.de,
	mlevitsk@redhat.com, linux@roeck-us.net, pbonzini@redhat.com,
	vkuznets@redhat.com, maz@kernel.org, will@kernel.org
Cc: suleiman@google.com, senozhatsky@google.com,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org,
	Hikaru Nishida <hikalium@chromium.org>,
	Andy Lutomirski <luto@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Jim Mattson <jmattson@google.com>,
	Joerg Roedel <joro@8bytes.org>,
	John Stultz <john.stultz@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>, Juergen Gross <jgross@suse.com>,
	Kees Cook <keescook@chromium.org>,
	Lai Jiangshan <laijs@linux.alibaba.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Sean Christopherson <seanjc@google.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Wanpeng Li <wanpengli@tencent.com>,
	kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org
Subject: [RFC PATCH v3 0/5] x86/kvm: Virtual suspend time injection support
Date: Wed, 20 Oct 2021 21:04:25 +0900	[thread overview]
Message-ID: <20211020120431.776494-1-hikalium@chromium.org> (raw)


Hi,

This patch series adds virtual suspend time injection support to KVM.
It is an updated version of the following series:
v2:
https://lore.kernel.org/kvm/20210806100710.2425336-1-hikalium@chromium.org/
v1:
https://lore.kernel.org/kvm/20210426090644.2218834-1-hikalium@chromium.org/

Please take a look again.

To kvm/arm64 folks:
I'm going to implement this mechanism to ARM64 as well but not
sure which function should be used to make an IRQ (like kvm_apic_set_irq
in x86) and if it is okay to use kvm_gfn_to_hva_cache /
kvm_write_guest_cached for sharing the suspend duration.
Please let me know if there is other suitable way or any suggestions.

Thanks,

Hikaru Nishida


Changes in v3:
- Used PM notifier instead of modifying timekeeping_resume()
  - This avoids holding kvm_lock under interrupt disabled context.
- Used KVM_REQ_* to make a request for vcpus.
- Reused HYPERVISOR_CALLBACK_VECTOR IRQ instead of adding a new one.
- Extracted arch-independent parts.
- Fixed other reviewed points.

Hikaru Nishida (5):
  timekeeping: Expose tk->offs_boot via ktime_get_offs_boot_ns
  kvm/x86: Include asm/pvclock.h in asm/kvmclock.h
  kvm/x86: virtual suspend time injection: Add common definitions
  kvm/x86: virtual suspend time injection: Implement host side
  kvm/x86: virtual suspend time injection: Implement guest side

 Documentation/virt/kvm/cpuid.rst     |   3 +
 Documentation/virt/kvm/msr.rst       |  30 ++++++++
 arch/x86/Kconfig                     |  13 ++++
 arch/x86/include/asm/idtentry.h      |   2 +-
 arch/x86/include/asm/kvm_host.h      |   2 +
 arch/x86/include/asm/kvmclock.h      |  11 +++
 arch/x86/include/uapi/asm/kvm_para.h |   6 ++
 arch/x86/kernel/kvm.c                |  14 +++-
 arch/x86/kernel/kvmclock.c           |  26 +++++++
 arch/x86/kvm/Kconfig                 |  13 ++++
 arch/x86/kvm/cpuid.c                 |   4 +
 arch/x86/kvm/x86.c                   | 109 +++++++++++++++++++++++++++
 arch/x86/mm/fault.c                  |   2 +-
 include/linux/kvm_host.h             |  48 ++++++++++++
 include/linux/timekeeper_internal.h  |   5 ++
 include/linux/timekeeping.h          |   6 ++
 kernel/time/timekeeping.c            |  56 ++++++++++++++
 virt/kvm/kvm_main.c                  |  88 +++++++++++++++++++++
 18 files changed, 432 insertions(+), 6 deletions(-)

-- 
2.33.0.1079.g6e70778dc9-goog


WARNING: multiple messages have this Message-ID
From: Hikaru Nishida <hikalium@chromium.org>
To: linux-kernel@vger.kernel.org, dme@dme.org, tglx@linutronix.de,
	mlevitsk@redhat.com, linux@roeck-us.net, pbonzini@redhat.com,
	vkuznets@redhat.com, maz@kernel.org, will@kernel.org
Cc: suleiman@google.com, senozhatsky@google.com,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org,
	Hikaru Nishida <hikalium@chromium.org>,
	Andy Lutomirski <luto@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Jim Mattson <jmattson@google.com>,
	Joerg Roedel <joro@8bytes.org>,
	John Stultz <john.stultz@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>, Juergen Gross <jgross@suse.com>,
	Kees Cook <keescook@chromium.org>,
	Lai Jiangshan <laijs@linux.alibaba.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Sean Christopherson <seanjc@google.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Wanpeng Li <wanpengli@tencent.com>,
	kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org
Subject: [RFC PATCH v3 0/5] x86/kvm: Virtual suspend time injection support
Date: Wed, 20 Oct 2021 21:04:25 +0900	[thread overview]
Message-ID: <20211020120431.776494-1-hikalium@chromium.org> (raw)


Hi,

This patch series adds virtual suspend time injection support to KVM.
It is an updated version of the following series:
v2:
https://lore.kernel.org/kvm/20210806100710.2425336-1-hikalium@chromium.org/
v1:
https://lore.kernel.org/kvm/20210426090644.2218834-1-hikalium@chromium.org/

Please take a look again.

To kvm/arm64 folks:
I'm going to implement this mechanism to ARM64 as well but not
sure which function should be used to make an IRQ (like kvm_apic_set_irq
in x86) and if it is okay to use kvm_gfn_to_hva_cache /
kvm_write_guest_cached for sharing the suspend duration.
Please let me know if there is other suitable way or any suggestions.

Thanks,

Hikaru Nishida


Changes in v3:
- Used PM notifier instead of modifying timekeeping_resume()
  - This avoids holding kvm_lock under interrupt disabled context.
- Used KVM_REQ_* to make a request for vcpus.
- Reused HYPERVISOR_CALLBACK_VECTOR IRQ instead of adding a new one.
- Extracted arch-independent parts.
- Fixed other reviewed points.

Hikaru Nishida (5):
  timekeeping: Expose tk->offs_boot via ktime_get_offs_boot_ns
  kvm/x86: Include asm/pvclock.h in asm/kvmclock.h
  kvm/x86: virtual suspend time injection: Add common definitions
  kvm/x86: virtual suspend time injection: Implement host side
  kvm/x86: virtual suspend time injection: Implement guest side

 Documentation/virt/kvm/cpuid.rst     |   3 +
 Documentation/virt/kvm/msr.rst       |  30 ++++++++
 arch/x86/Kconfig                     |  13 ++++
 arch/x86/include/asm/idtentry.h      |   2 +-
 arch/x86/include/asm/kvm_host.h      |   2 +
 arch/x86/include/asm/kvmclock.h      |  11 +++
 arch/x86/include/uapi/asm/kvm_para.h |   6 ++
 arch/x86/kernel/kvm.c                |  14 +++-
 arch/x86/kernel/kvmclock.c           |  26 +++++++
 arch/x86/kvm/Kconfig                 |  13 ++++
 arch/x86/kvm/cpuid.c                 |   4 +
 arch/x86/kvm/x86.c                   | 109 +++++++++++++++++++++++++++
 arch/x86/mm/fault.c                  |   2 +-
 include/linux/kvm_host.h             |  48 ++++++++++++
 include/linux/timekeeper_internal.h  |   5 ++
 include/linux/timekeeping.h          |   6 ++
 kernel/time/timekeeping.c            |  56 ++++++++++++++
 virt/kvm/kvm_main.c                  |  88 +++++++++++++++++++++
 18 files changed, 432 insertions(+), 6 deletions(-)

-- 
2.33.0.1079.g6e70778dc9-goog


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID
From: Hikaru Nishida <hikalium@chromium.org>
To: linux-kernel@vger.kernel.org, dme@dme.org, tglx@linutronix.de,
	mlevitsk@redhat.com, linux@roeck-us.net, pbonzini@redhat.com,
	vkuznets@redhat.com, maz@kernel.org, will@kernel.org
Cc: Wanpeng Li <wanpengli@tencent.com>,
	kvm@vger.kernel.org, linux-doc@vger.kernel.org,
	Peter Zijlstra <peterz@infradead.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	senozhatsky@google.com, Ingo Molnar <mingo@kernel.org>,
	kvmarm@lists.cs.columbia.edu, Jonathan Corbet <corbet@lwn.net>,
	Joerg Roedel <joro@8bytes.org>,
	x86@kernel.org, Hikaru Nishida <hikalium@chromium.org>,
	Ingo Molnar <mingo@redhat.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	suleiman@google.com, Kees Cook <keescook@chromium.org>,
	Arnd Bergmann <arnd@arndb.de>,
	Lai Jiangshan <laijs@linux.alibaba.com>,
	John Stultz <john.stultz@linaro.org>,
	Andy Lutomirski <luto@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	Jim Mattson <jmattson@google.com>,
	Juergen Gross <jgross@suse.com>, Stephen Boyd <sboyd@kernel.org>,
	Borislav Petkov <bp@alien8.de>
Subject: [RFC PATCH v3 0/5] x86/kvm: Virtual suspend time injection support
Date: Wed, 20 Oct 2021 21:04:25 +0900	[thread overview]
Message-ID: <20211020120431.776494-1-hikalium@chromium.org> (raw)


Hi,

This patch series adds virtual suspend time injection support to KVM.
It is an updated version of the following series:
v2:
https://lore.kernel.org/kvm/20210806100710.2425336-1-hikalium@chromium.org/
v1:
https://lore.kernel.org/kvm/20210426090644.2218834-1-hikalium@chromium.org/

Please take a look again.

To kvm/arm64 folks:
I'm going to implement this mechanism to ARM64 as well but not
sure which function should be used to make an IRQ (like kvm_apic_set_irq
in x86) and if it is okay to use kvm_gfn_to_hva_cache /
kvm_write_guest_cached for sharing the suspend duration.
Please let me know if there is other suitable way or any suggestions.

Thanks,

Hikaru Nishida


Changes in v3:
- Used PM notifier instead of modifying timekeeping_resume()
  - This avoids holding kvm_lock under interrupt disabled context.
- Used KVM_REQ_* to make a request for vcpus.
- Reused HYPERVISOR_CALLBACK_VECTOR IRQ instead of adding a new one.
- Extracted arch-independent parts.
- Fixed other reviewed points.

Hikaru Nishida (5):
  timekeeping: Expose tk->offs_boot via ktime_get_offs_boot_ns
  kvm/x86: Include asm/pvclock.h in asm/kvmclock.h
  kvm/x86: virtual suspend time injection: Add common definitions
  kvm/x86: virtual suspend time injection: Implement host side
  kvm/x86: virtual suspend time injection: Implement guest side

 Documentation/virt/kvm/cpuid.rst     |   3 +
 Documentation/virt/kvm/msr.rst       |  30 ++++++++
 arch/x86/Kconfig                     |  13 ++++
 arch/x86/include/asm/idtentry.h      |   2 +-
 arch/x86/include/asm/kvm_host.h      |   2 +
 arch/x86/include/asm/kvmclock.h      |  11 +++
 arch/x86/include/uapi/asm/kvm_para.h |   6 ++
 arch/x86/kernel/kvm.c                |  14 +++-
 arch/x86/kernel/kvmclock.c           |  26 +++++++
 arch/x86/kvm/Kconfig                 |  13 ++++
 arch/x86/kvm/cpuid.c                 |   4 +
 arch/x86/kvm/x86.c                   | 109 +++++++++++++++++++++++++++
 arch/x86/mm/fault.c                  |   2 +-
 include/linux/kvm_host.h             |  48 ++++++++++++
 include/linux/timekeeper_internal.h  |   5 ++
 include/linux/timekeeping.h          |   6 ++
 kernel/time/timekeeping.c            |  56 ++++++++++++++
 virt/kvm/kvm_main.c                  |  88 +++++++++++++++++++++
 18 files changed, 432 insertions(+), 6 deletions(-)

-- 
2.33.0.1079.g6e70778dc9-goog

_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm

             reply	other threads:[~2021-10-20 12:04 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-20 12:04 Hikaru Nishida [this message]
2021-10-20 12:04 ` Hikaru Nishida
2021-10-20 12:04 ` Hikaru Nishida
2021-10-20 12:04 ` [RFC PATCH v3 1/5] timekeeping: Expose tk->offs_boot via ktime_get_offs_boot_ns Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04 ` [RFC PATCH v3 2/5] kvm/x86: Include asm/pvclock.h in asm/kvmclock.h Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04 ` [RFC PATCH v3 3/5] kvm/x86: virtual suspend time injection: Add common definitions Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04 ` [RFC PATCH v3 4/5] kvm/x86: virtual suspend time injection: Implement host side Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04 ` [RFC PATCH v3 5/5] kvm/x86: virtual suspend time injection: Implement guest side Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 12:04   ` Hikaru Nishida
2021-10-20 13:52 ` [RFC PATCH v3 0/5] x86/kvm: Virtual suspend time injection support Marc Zyngier
2021-10-20 13:52   ` Marc Zyngier
2021-10-20 13:52   ` Marc Zyngier
2021-11-04  9:10   ` Hikaru Nishida
2021-11-04  9:10     ` Hikaru Nishida
2021-11-04  9:10     ` Hikaru Nishida
2021-12-04 17:30     ` Marc Zyngier
2021-12-04 17:30       ` Marc Zyngier
2021-12-04 17:30       ` Marc Zyngier
2022-04-06  3:48       ` Hikaru Nishida
2022-04-06  3:48         ` Hikaru Nishida
2022-04-06  3:48         ` Hikaru Nishida

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