On Tue, 20 Jul 2021 15:56:58 +0100, Michael Kelley <mikelley@xxxxxxxxxxxxx> wrote: > > This series enables Linux guests running on Hyper-V on ARM64 > hardware. New ARM64-specific code in arch/arm64/hyperv initializes > Hyper-V and its 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) Add definitions and functions for making Hyper-V hypercalls > and getting/setting virtual processor registers provided by > Hyper-V > > 2) Add the function needed by the arch independent VMbus driver > for reporting a panic to Hyper-V. > > 3) Add Hyper-V initialization code and utility functions that > report Hyper-v status. > > 4) Export screen_info so it may be used by the Hyper-V frame buffer > driver built as a module. It is already exported for x86, > powerpc, and alpha architectures. > > 5) Make CONFIG_HYPERV selectable on ARM64 in addition to x86/x64. > > Hyper-V on ARM64 runs with a 4 Kbyte page size, but allows guests > with 4K/16K/64K page size. Linux guests with this patch series > work with all three supported ARM64 page sizes. > > The Hyper-V vPCI driver at drivers/pci/host/pci-hyperv.c has > x86/x64-specific code and is not being built for ARM64. Enabling > Hyper-V vPCI devices on ARM64 is in progress via a separate set > of patches. > > This patch set is based on the linux-next20210720 code tree. > > Changes in v11: > * Drop the previous Patch 1 as the fixes have already been > separately accepted upstream. > * Drop the previous Patch 3 for enabling Hyper-V enlightened > clocks/timers. Hyper-V is now offering the full ARM64 > architectural Generic Timer in guest VMs, so the existing > arch_arch_timer.c driver just works. [Mark Rutland, Marc > Zyngier] Thanks for doing this. Assuming you fix the issue I mentioned in my reply to patch #3. FWIW: Acked-by: Marc Zyngier <maz@xxxxxxxxxx> M. -- Without deviation from the norm, progress is not possible.
