From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/mips/include/asm/kvm_para.h | 109 ++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 kernel/arch/mips/include/asm/kvm_para.h (limited to 'kernel/arch/mips/include/asm/kvm_para.h') diff --git a/kernel/arch/mips/include/asm/kvm_para.h b/kernel/arch/mips/include/asm/kvm_para.h new file mode 100644 index 000000000..5a9aa918a --- /dev/null +++ b/kernel/arch/mips/include/asm/kvm_para.h @@ -0,0 +1,109 @@ +#ifndef _ASM_MIPS_KVM_PARA_H +#define _ASM_MIPS_KVM_PARA_H + +#include + +#define KVM_HYPERCALL ".word 0x42000028" + +/* + * Hypercalls for KVM. + * + * Hypercall number is passed in v0. + * Return value will be placed in v0. + * Up to 3 arguments are passed in a0, a1, and a2. + */ +static inline unsigned long kvm_hypercall0(unsigned long num) +{ + register unsigned long n asm("v0"); + register unsigned long r asm("v0"); + + n = num; + __asm__ __volatile__( + KVM_HYPERCALL + : "=r" (r) : "r" (n) : "memory" + ); + + return r; +} + +static inline unsigned long kvm_hypercall1(unsigned long num, + unsigned long arg0) +{ + register unsigned long n asm("v0"); + register unsigned long r asm("v0"); + register unsigned long a0 asm("a0"); + + n = num; + a0 = arg0; + __asm__ __volatile__( + KVM_HYPERCALL + : "=r" (r) : "r" (n), "r" (a0) : "memory" + ); + + return r; +} + +static inline unsigned long kvm_hypercall2(unsigned long num, + unsigned long arg0, unsigned long arg1) +{ + register unsigned long n asm("v0"); + register unsigned long r asm("v0"); + register unsigned long a0 asm("a0"); + register unsigned long a1 asm("a1"); + + n = num; + a0 = arg0; + a1 = arg1; + __asm__ __volatile__( + KVM_HYPERCALL + : "=r" (r) : "r" (n), "r" (a0), "r" (a1) : "memory" + ); + + return r; +} + +static inline unsigned long kvm_hypercall3(unsigned long num, + unsigned long arg0, unsigned long arg1, unsigned long arg2) +{ + register unsigned long n asm("v0"); + register unsigned long r asm("v0"); + register unsigned long a0 asm("a0"); + register unsigned long a1 asm("a1"); + register unsigned long a2 asm("a2"); + + n = num; + a0 = arg0; + a1 = arg1; + a2 = arg2; + __asm__ __volatile__( + KVM_HYPERCALL + : "=r" (r) : "r" (n), "r" (a0), "r" (a1), "r" (a2) : "memory" + ); + + return r; +} + +static inline bool kvm_check_and_clear_guest_paused(void) +{ + return false; +} + +static inline unsigned int kvm_arch_para_features(void) +{ + return 0; +} + +#ifdef CONFIG_MIPS_PARAVIRT +static inline bool kvm_para_available(void) +{ + return true; +} +#else +static inline bool kvm_para_available(void) +{ + return false; +} +#endif + + +#endif /* _ASM_MIPS_KVM_PARA_H */ -- cgit 1.2.3-korg