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5 Commits

Author SHA1 Message Date
Thomas Gleixner 2d2ccf2493 x86/Hyper-V/hv_apic: Build the Hyper-V APIC conditionally 
The Hyper-V APIC code is built when CONFIG_HYPERV is enabled but the actual
code in that file is guarded with CONFIG_X86_64. There is no point in doing
this. Neither is there a point in having the CONFIG_HYPERV guard in there
because the containing directory is not built when CONFIG_HYPERV=n.

Further for the hv_init_apic() function a stub is provided only for
CONFIG_HYPERV=n, which is pointless as the callsite is not compiled at
all. But for X86_32 the stub is missing and the build fails.

Clean that up:

  - Compile hv_apic.c only when CONFIG_X86_64=y
  - Make the stub for hv_init_apic() available when CONFG_X86_64=n

Fixes: 6b48cb5f83 ("X86/Hyper-V: Enlighten APIC access")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Michael Kelley <mikelley@microsoft.com>
 2018-05-19 21:34:11 +02:00
Thomas Gleixner 61eeb1f6d1 x86/Hyper-V/hv_apic: Include asm/apic.h 
Not all configurations magically include asm/apic.h, but the Hyper-V code
requires it. Include it explicitely.

Fixes: 6b48cb5f83 ("X86/Hyper-V: Enlighten APIC access")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Michael Kelley <mikelley@microsoft.com>
 2018-05-19 16:41:59 +02:00
K. Y. Srinivasan 366f03b0cf X86/Hyper-V: Enhanced IPI enlightenment 
Support enhanced IPI enlightenments (to target more than 64 CPUs).

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: olaf@aepfle.de
Cc: sthemmin@microsoft.com
Cc: gregkh@linuxfoundation.org
Cc: jasowang@redhat.com
Cc: Michael.H.Kelley@microsoft.com
Cc: hpa@zytor.com
Cc: apw@canonical.com
Cc: devel@linuxdriverproject.org
Cc: vkuznets@redhat.com
Link: https://lkml.kernel.org/r/20180516215334.6547-3-kys@linuxonhyperv.com
 2018-05-19 13:23:17 +02:00
K. Y. Srinivasan 68bb7bfb79 X86/Hyper-V: Enable IPI enlightenments 
Hyper-V supports hypercalls to implement IPI; use them.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: olaf@aepfle.de
Cc: sthemmin@microsoft.com
Cc: gregkh@linuxfoundation.org
Cc: jasowang@redhat.com
Cc: Michael.H.Kelley@microsoft.com
Cc: hpa@zytor.com
Cc: apw@canonical.com
Cc: devel@linuxdriverproject.org
Cc: vkuznets@redhat.com
Link: https://lkml.kernel.org/r/20180516215334.6547-2-kys@linuxonhyperv.com
 2018-05-19 13:23:17 +02:00
K. Y. Srinivasan 6b48cb5f83 X86/Hyper-V: Enlighten APIC access 
Hyper-V supports MSR based APIC access; implement
the enlightenment.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Cc: olaf@aepfle.de
Cc: sthemmin@microsoft.com
Cc: gregkh@linuxfoundation.org
Cc: jasowang@redhat.com
Cc: Michael.H.Kelley@microsoft.com
Cc: hpa@zytor.com
Cc: apw@canonical.com
Cc: devel@linuxdriverproject.org
Cc: vkuznets@redhat.com
Link: https://lkml.kernel.org/r/20180516215334.6547-1-kys@linuxonhyperv.com
 2018-05-19 13:23:17 +02:00