kernel.git/drivers/hv/hv.c, branch linux-4.16.y

Drivers: hv: vmbus: Remove x86-isms from arch independent drivers

2018-01-09T16:58:41Z

hv_is_hypercall_page_setup() is used to check if Hyper-V is initialized, but a 'hypercall page' is an x86 implementation detail that isn't necessarily present on other architectures. Rename to the architecture independent hv_is_hyperv_initialized() and add check that x86_hyper is pointing to Hyper-V. Use this function instead of direct references to x86-specific data structures in vmbus_drv.c, and remove now redundant call in hv_init(). Also remove 'x86' from the string name passed to cpuhp_setup_state(). Signed-off-by: Michael Kelley Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

hyper-v: Globalize vp_index

2017-08-10T14:50:23Z

To support implementing remote TLB flushing on Hyper-V with a hypercall we need to make vp_index available outside of vmbus module. Rename and globalize. Signed-off-by: Vitaly Kuznetsov Reviewed-by: Andy Shevchenko Reviewed-by: Stephen Hemminger Cc: Andy Lutomirski Cc: Haiyang Zhang Cc: Jork Loeser Cc: K. Y. Srinivasan Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Simon Xiao Cc: Steven Rostedt Cc: Thomas Gleixner Cc: devel@linuxdriverproject.org Link: http://lkml.kernel.org/r/20170802160921.21791-7-vkuznets@redhat.com Signed-off-by: Ingo Molnar

Drivers: hv: vmbus: Close timing hole that can corrupt per-cpu page

2017-05-25T13:42:42Z

Extend the disabling of preemption to include the hypercall so that another thread can't get the CPU and corrupt the per-cpu page used for hypercall arguments. Cc: #4.11 Signed-off-by: Michael Kelley Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

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

Drivers: hv: Base autoeoi enablement based on hypervisor hints

2017-03-17T06:10:49Z

Don't enable auto-eoi if the hypervisor recommends otherwise. This will enable vAPIC functionality if available. Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

vmbus: change to per channel tasklet

2017-02-14T18:20:35Z

Make the event handling tasklet per channel rather than per-cpu. This allows for better fairness when getting lots of data on the same cpu. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

vmbus: put related per-cpu variable together

2017-02-14T18:20:35Z

The hv_context structure had several arrays which were per-cpu and was allocating small structures (tasklet_struct). Instead use a single per-cpu array. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan 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