kernel.git/arch/x86/include/asm/mshyperv.h, branch linux-4.13.y

Merge tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2017-07-04T03:55:59Z

Pull char/misc updates from Greg KH: "Here is the "big" char/misc driver patchset for 4.13-rc1. Lots of stuff in here, a large thunderbolt update, w1 driver header reorg, the new mux driver subsystem, google firmware driver updates, and a raft of other smaller things. Full details in the shortlog. All of these have been in linux-next for a while with the only reported issue being a merge problem with this tree and the jc-docs tree in the w1 documentation area" * tag 'char-misc-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (147 commits) misc: apds990x: Use sysfs_match_string() helper mei: drop unreachable code in mei_start mei: validate the message header only in first fragment. DocBook: w1: Update W1 file locations and names in DocBook mux: adg792a: always require I2C support nvmem: rockchip-efuse: add support for rk322x-efuse nvmem: core: add locking to nvmem_find_cell nvmem: core: Call put_device() in nvmem_unregister() nvmem: core: fix leaks on registration errors nvmem: correct Broadcom OTP controller driver writes w1: Add subsystem kernel public interface drivers/fsi: Add module license to core driver drivers/fsi: Use asynchronous slave mode drivers/fsi: Add hub master support drivers/fsi: Add SCOM FSI client device driver drivers/fsi/gpio: Add tracepoints for GPIO master drivers/fsi: Add GPIO based FSI master drivers/fsi: Document FSI master sysfs files in ABI drivers/fsi: Add error handling for slave drivers/fsi: Add tracepoints for low-level operations ...

x86/mshyperv: Remove excess #includes from mshyperv.h

2017-06-24T06:48:51Z

A recent commit included linux/slab.h in linux/irq.h. This breaks the build of vdso32 on a 64-bit kernel. The reason is that linux/irq.h gets included into the vdso code via linux/interrupt.h which is included from asm/mshyperv.h. That makes the 32-bit vdso compile fail, because slab.h includes the pgtable headers for 64-bit on a 64-bit build. Neither linux/clocksource.h nor linux/interrupt.h are needed in the mshyperv.h header file itself - it has a dependency on . Remove the includes and unbreak the build. Reported-by: Ingo Molnar Signed-off-by: Thomas Gleixner Cc: K. Y. Srinivasan Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Vitaly Kuznetsov Cc: devel@linuxdriverproject.org Fixes: dee863b571b0 ("hv: export current Hyper-V clocksource") Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1706231038460.2647@nanos Signed-off-by: Ingo Molnar

Drivers: hv: vmbus: Get the current time from the current clocksource

2017-05-25T13:42:42Z

The current code uses the MSR based mechanism to get the current tick. Use the current clock source as that might be more optimal. Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

x86/hyperv: Move TSC reading method to asm/mshyperv.h

2017-03-11T13:47:28Z

As a preparation to making Hyper-V TSC page suitable for vDSO move the TSC page reading logic to asm/mshyperv.h. While on it, do the following: - Document the reading algorithm. - Simplify the code a bit. - Add explicit READ_ONCE() to not rely on 'volatile'. - Add explicit barriers to prevent re-ordering (we need to read sequence strictly before and after) - Use mul_u64_u64_shr() instead of assembly, gcc generates a single 'mul' instruction on x86_64 anyway. [ tglx: Simplified the loop ] Signed-off-by: Vitaly Kuznetsov Cc: Stephen Hemminger Cc: Haiyang Zhang Cc: Dexuan Cui Cc: Andy Lutomirski Cc: devel@linuxdriverproject.org Cc: "K. Y. Srinivasan" Cc: virtualization@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20170303132142.25595-3-vkuznets@redhat.com Signed-off-by: Thomas Gleixner

x86/hyperv: Implement hv_get_tsc_page()

2017-03-11T13:47:28Z

To use Hyper-V TSC page clocksource from vDSO we need to make tsc_pg available. Implement hv_get_tsc_page() and add CONFIG_HYPERV_TSCPAGE to make #ifdef-s simple. Signed-off-by: Vitaly Kuznetsov Cc: Stephen Hemminger Cc: Haiyang Zhang Cc: Dexuan Cui Cc: Andy Lutomirski Cc: devel@linuxdriverproject.org Cc: "K. Y. Srinivasan" Cc: virtualization@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20170303132142.25595-2-vkuznets@redhat.com Signed-off-by: Thomas Gleixner

hv: export current Hyper-V clocksource

2017-02-10T14:40:19Z

As a preparation to implementing Hyper-V PTP device supporting .getcrosststamp we need to export a reference to the current Hyper-V clocksource in use (MSR or TSC page). Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

Drivers: hv: Fix the bug in generating the guest ID

2017-02-10T14:40:19Z

Fix the bug in the generation of the guest ID. Without this fix the host side telemetry code is broken. Signed-off-by: K. Y. Srinivasan Fixes: 352c9624242d ("Drivers: hv: vmbus: Move the definition of generate_guest_id()") Signed-off-by: Greg Kroah-Hartman

Drivers: hv: restore hypervcall page cleanup before kexec

2017-01-31T10:05:58Z

We need to cleanup the hypercall page before doing kexec/kdump or the new kernel may crash if it tries to use it. Reuse the now-empty hv_cleanup function renaming it to hyperv_cleanup and moving to the arch specific code. Fixes: 8730046c1498 ("Drivers: hv vmbus: Move Hypercall page setup out of common code") Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: Define an APIs to manage interrupt state

2017-01-20T13:52:49Z

As part of cleaning up architecture specific code, define APIs to manage interrupt state. Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: Define an API to retrieve virtual processor index

2017-01-20T13:52:48Z

As part of cleaning up architecture specific code, define an API to retrieve the virtual procesor index. Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman