From: Michael Kelley <mhkelley58@gmail.com>
To: will.deacon@arm.com, catalin.marinas@arm.com,
mark.rutland@arm.com, marc.zyngier@arm.com,
linux-arm-kernel@lists.infradead.org, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, devel@linuxdriverproject.org,
olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com,
jasowang@redhat.com, leann.ogasawara@canonical.com,
marcelo.cerri@canonical.com, sthemmin@microsoft.com,
kys@microsoft.com
Cc: mikelley@microsoft.com
Subject: [PATCH 0/5] Enable Linux guests on Hyper-V on ARM64
Date: Tue, 19 Jun 2018 14:23:10 -0700 [thread overview]
Message-ID: <1529443395-20874-1-git-send-email-mikelley@microsoft.com> (raw)
This patch series enables Linux guests running on Hyper-V on ARM64
hardware. New ARM64-specific code in arch/arm64/hyperv initializes
Hyper-V, including its synthetic clocks and hypercall mechanism.
Existing architecture independent drivers for Hyper-V's VMbus and
synthetic devices just work when built for ARM64. Hyper-V code is
built and included in the image and modules only if CONFIG_HYPERV
is enabled.
The five patches are organized as follows:
1) Implement slow_virt_to_phys() function for ARM64. This
function parallels the same function for x86/x64, and is used
by the Hyper-V synthetic network driver.
2) Add include files that define the Hyper-V interface as
described in the Hyper-V Top Level Functional Spec (TLFS), plus
additional definitions specific to Linux running on Hyper-V.
3) Add core Hyper-V support on ARM64, including hypercalls,
synthetic clock initialization, and interrupt handlers.
4) Update the existing VMbus driver to generalize interrupt
management across x86/x64 and ARM64.
5) Make CONFIG_HYPERV selectable on ARM64 in addition to x86/x64.
Some areas of Linux guests on Hyper-V on ARM64 are a work-
in-progress, primarily due to work still being done in Hyper-V:
* Hyper-V on ARM64 currently runs with a 4 Kbyte page size, and only
supports guests with a 4 Kbyte page size. Because Hyper-V uses
shared pages to communicate between the guest and the hypervisor,
there are open design decisions on the page size to use when
the guest is using 16K/64K pages. Once those issues are
resolved and Hyper-V fully supports 16K/64K guest pages, changes
may be needed in the Linux drivers for Hyper-V synthetic devices.
* Hyper-V on ARM64 does not currently support mapping PCI devices
into the guest address space. The Hyper-V PCI driver at
drivers/pci/host/pci-hyperv.c has x86/x64-specific code and is
not being built for ARM64.
In a few cases, terminology from the x86/x64 world has been carried
over into the ARM64 code ("MSR", "TSC"). Hyper-V still uses the
x86/x64 terminology and has not replaced it with something more
generic, so the code uses the Hyper-V terminology. This will be
fixed when Hyper-V updates the usage in the TLFS.
Michael Kelley (5):
arm64: mm: Add slow_virt_to_phys()
arm64: hyperv: Add core Hyper-V include files
arm64: hyperv: Add support for Hyper-V as a hypervisor
Drivers: hv: vmbus: Add hooks for per-CPU IRQ
Drivers: hv: Enable CONFIG_HYPERV on ARM64
MAINTAINERS | 3 +
arch/arm64/Makefile | 1 +
arch/arm64/hyperv/Makefile | 2 +
arch/arm64/hyperv/hv_hvc.S | 54 +++++
arch/arm64/hyperv/hv_init.c | 411 +++++++++++++++++++++++++++++++++++
arch/arm64/hyperv/mshyperv.c | 178 +++++++++++++++
arch/arm64/include/asm/hyperv-tlfs.h | 353 ++++++++++++++++++++++++++++++
arch/arm64/include/asm/memory.h | 6 +
arch/arm64/include/asm/mshyperv.h | 291 +++++++++++++++++++++++++
arch/arm64/mm/pageattr.c | 37 ++++
arch/x86/include/asm/mshyperv.h | 4 +
drivers/hv/Kconfig | 3 +-
drivers/hv/hv.c | 2 +
13 files changed, 1344 insertions(+), 1 deletion(-)
create mode 100644 arch/arm64/hyperv/Makefile
create mode 100644 arch/arm64/hyperv/hv_hvc.S
create mode 100644 arch/arm64/hyperv/hv_init.c
create mode 100644 arch/arm64/hyperv/mshyperv.c
create mode 100644 arch/arm64/include/asm/hyperv-tlfs.h
create mode 100644 arch/arm64/include/asm/mshyperv.h
--
1.8.3.1
next reply other threads:[~2018-06-19 21:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-19 21:23 Michael Kelley [this message]
2018-06-19 21:23 ` [PATCH 1/5] arm64: mm: Add slow_virt_to_phys() Michael Kelley
2018-06-20 8:06 ` Mark Rutland
2018-06-19 21:23 ` [PATCH 2/5] arm64: hyperv: Add core Hyper-V include files Michael Kelley
2018-06-19 21:23 ` [PATCH 3/5] arm64: hyperv: Add support for Hyper-V as a hypervisor Michael Kelley
2018-06-19 21:23 ` [PATCH 4/5] Drivers: hv: vmbus: Add hooks for per-CPU IRQ Michael Kelley
2018-06-19 21:23 ` [PATCH 5/5] Drivers: hv: Enable CONFIG_HYPERV on ARM64 Michael Kelley
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