• Michael Kelley's avatar
    clocksource/drivers: Make Hyper-V clocksource ISA agnostic · fd1fea68
    Michael Kelley authored
    
    
    Hyper-V clock/timer code and data structures are currently mixed
    in with other code in the ISA independent drivers/hv directory as
    well as the ISA dependent Hyper-V code under arch/x86.
    
    Consolidate this code and data structures into a Hyper-V clocksource driver
    to better follow the Linux model. In doing so, separate out the ISA
    dependent portions so the new clocksource driver works for x86 and for the
    in-process Hyper-V on ARM64 code.
    
    To start, move the existing clockevents code to create the new clocksource
    driver. Update the VMbus driver to call initialization and cleanup routines
    since the Hyper-V synthetic timers are not independently enumerated in
    ACPI.
    
    No behavior is changed and no new functionality is added.
    
    Suggested-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    Signed-off-by: default avatarMichael Kelley <mikelley@microsoft.com>
    Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    Reviewed-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
    Cc: "bp@alien8.de" <bp@alien8.de>
    Cc: "will.deacon@arm.com" <will.deacon@arm.com>
    Cc: "catalin.marinas@arm.com" <catalin.marinas@arm.com>
    Cc: "mark.rutland@arm.com" <mark.rutland@arm.com>
    Cc: "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>
    Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
    Cc: "linux-hyperv@vger.kernel.org" <linux-hyperv@vger.kernel.org>
    Cc: "olaf@aepfle.de" <olaf@aepfle.de>
    Cc: "apw@canonical.com" <apw@canonical.com>
    Cc: "jasowang@redhat.com" <jasowang@redhat.com>
    Cc: "marcelo.cerri@canonical.com" <marcelo.cerri@canonical.com>
    Cc: Sunil Muthuswamy <sunilmut@microsoft.com>
    Cc: KY Srinivasan <kys@microsoft.com>
    Cc: "sashal@kernel.org" <sashal@kernel.org>
    Cc: "vincenzo.frascino@arm.com" <vincenzo.frascino@arm.com>
    Cc: "linux-arch@vger.kernel.org" <linux-arch@vger.kernel.org>
    Cc: "linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>
    Cc: "linux-kselftest@vger.kernel.org" <linux-kselftest@vger.kernel.org>
    Cc: "arnd@arndb.de" <arnd@arndb.de>
    Cc: "linux@armlinux.org.uk" <linux@armlinux.org.uk>
    Cc: "ralf@linux-mips.org" <ralf@linux-mips.org>
    Cc: "paul.burton@mips.com" <paul.burton@mips.com>
    Cc: "daniel.lezcano@linaro.org" <daniel.lezcano@linaro.org>
    Cc: "salyzyn@android.com" <salyzyn@android.com>
    Cc: "pcc@google.com" <pcc@google.com>
    Cc: "shuah@kernel.org" <shuah@kernel.org>
    Cc: "0x7f454c46@gmail.com" <0x7f454c46@gmail.com>
    Cc: "linux@rasmusvillemoes.dk" <linux@rasmusvillemoes.dk>
    Cc: "huw@codeweavers.com" <huw@codeweavers.com>
    Cc: "sfr@canb.auug.org.au" <sfr@canb.auug.org.au>
    Cc: "pbonzini@redhat.com" <pbonzini@redhat.com>
    Cc: "rkrcmar@redhat.com" <rkrcmar@redhat.com>
    Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
    Link: https://lkml.kernel.org/r/1561955054-1838-2-git-send-email-mikelley@microsoft.com
    fd1fea68