From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/arch/x86/include/asm/kvm_para.h | 31 +++++++++++++++++++++----------
1 files changed, 21 insertions(+), 10 deletions(-)
diff --git a/kernel/arch/x86/include/asm/kvm_para.h b/kernel/arch/x86/include/asm/kvm_para.h
index 4c72363..6929987 100644
--- a/kernel/arch/x86/include/asm/kvm_para.h
+++ b/kernel/arch/x86/include/asm/kvm_para.h
@@ -4,9 +4,8 @@
#include <asm/processor.h>
#include <asm/alternative.h>
+#include <linux/interrupt.h>
#include <uapi/asm/kvm_para.h>
-
-extern void kvmclock_init(void);
#ifdef CONFIG_KVM_GUEST
bool kvm_check_and_clear_guest_paused(void);
@@ -18,7 +17,7 @@
#endif /* CONFIG_KVM_GUEST */
#define KVM_HYPERCALL \
- ALTERNATIVE(".byte 0x0f,0x01,0xc1", ".byte 0x0f,0x01,0xd9", X86_FEATURE_VMMCALL)
+ ALTERNATIVE("vmcall", "vmmcall", X86_FEATURE_VMMCALL)
/* For KVM hypercalls, a three-byte sequence of either the vmcall or the vmmcall
* instruction. The hypervisor may replace it with something else but only the
@@ -85,13 +84,25 @@
}
#ifdef CONFIG_KVM_GUEST
+void kvmclock_init(void);
+void kvmclock_disable(void);
bool kvm_para_available(void);
unsigned int kvm_arch_para_features(void);
unsigned int kvm_arch_para_hints(void);
-void kvm_async_pf_task_wait(u32 token, int interrupt_kernel);
+void kvm_async_pf_task_wait_schedule(u32 token);
void kvm_async_pf_task_wake(u32 token);
-u32 kvm_read_and_reset_pf_reason(void);
-extern void kvm_disable_steal_time(void);
+u32 kvm_read_and_reset_apf_flags(void);
+bool __kvm_handle_async_pf(struct pt_regs *regs, u32 token);
+
+DECLARE_STATIC_KEY_FALSE(kvm_async_pf_enabled);
+
+static __always_inline bool kvm_handle_async_pf(struct pt_regs *regs, u32 token)
+{
+ if (static_branch_unlikely(&kvm_async_pf_enabled))
+ return __kvm_handle_async_pf(regs, token);
+ else
+ return false;
+}
#ifdef CONFIG_PARAVIRT_SPINLOCKS
void __init kvm_spinlock_init(void);
@@ -102,7 +113,7 @@
#endif /* CONFIG_PARAVIRT_SPINLOCKS */
#else /* CONFIG_KVM_GUEST */
-#define kvm_async_pf_task_wait(T, I) do {} while(0)
+#define kvm_async_pf_task_wait_schedule(T) do {} while(0)
#define kvm_async_pf_task_wake(T) do {} while(0)
static inline bool kvm_para_available(void)
@@ -120,14 +131,14 @@
return 0;
}
-static inline u32 kvm_read_and_reset_pf_reason(void)
+static inline u32 kvm_read_and_reset_apf_flags(void)
{
return 0;
}
-static inline void kvm_disable_steal_time(void)
+static __always_inline bool kvm_handle_async_pf(struct pt_regs *regs, u32 token)
{
- return;
+ return false;
}
#endif
--
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