diff options
| author | Yi Sun <yi.y.sun@linux.intel.com> | 2018-10-08 11:29:34 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-10-09 15:21:39 +0300 |
| commit | 3a025de64bf89c84a79909069e3c24ad9e710d27 (patch) | |
| tree | 04adc9cf615d5644da69374dbf9d70b4a33cb63d /arch/x86/include | |
| parent | f726c4620df39055f060537a8ed183c18a2c504b (diff) | |
| download | linux-3a025de64bf89c84a79909069e3c24ad9e710d27.tar.xz | |
x86/hyperv: Enable PV qspinlock for Hyper-V
Implement the required wait and kick callbacks to support PV spinlocks in
Hyper-V guests.
[ tglx: Document the requirement for disabling interrupts in the wait()
callback. Remove goto and unnecessary includes. Add prototype
for hv_vcpu_is_preempted(). Adapted to pending paravirt changes. ]
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Michael Kelley (EOSG) <Michael.H.Kelley@microsoft.com>
Cc: chao.p.peng@intel.com
Cc: chao.gao@intel.com
Cc: isaku.yamahata@intel.com
Cc: tianyu.lan@microsoft.com
Link: https://lkml.kernel.org/r/1538987374-51217-3-git-send-email-yi.y.sun@linux.intel.com
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/mshyperv.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index f37704497d8f..0d6271cce198 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -351,6 +351,8 @@ int hyperv_flush_guest_mapping(u64 as); #ifdef CONFIG_X86_64 void hv_apic_init(void); +void __init hv_init_spinlocks(void); +bool hv_vcpu_is_preempted(int vcpu); #else static inline void hv_apic_init(void) {} #endif |