KVM: Portability: Move kvm_get/set_msr[_common] to x86.c

This patch moves the implementation of the functions of kvm_get/set_msr,
kvm_get/set_msr_common, and set_efer from kvm_main.c to x86.c. The
definition of EFER_RESERVED_BITS is moved too.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index f439e45..7acf4cb 100644 (file)
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -90,8 +90,6 @@ static struct kvm_stats_debugfs_item {
 
 static struct dentry *debugfs_dir;
 
-#define EFER_RESERVED_BITS 0xfffffffffffff2fe
-
 static long kvm_vcpu_ioctl(struct file *file, unsigned int ioctl,
                           unsigned long arg);
 
@@ -1356,137 +1354,6 @@ void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long val,
        }
 }
 
-int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
-{
-       u64 data;
-
-       switch (msr) {
-       case 0xc0010010: /* SYSCFG */
-       case 0xc0010015: /* HWCR */
-       case MSR_IA32_PLATFORM_ID:
-       case MSR_IA32_P5_MC_ADDR:
-       case MSR_IA32_P5_MC_TYPE:
-       case MSR_IA32_MC0_CTL:
-       case MSR_IA32_MCG_STATUS:
-       case MSR_IA32_MCG_CAP:
-       case MSR_IA32_MC0_MISC:
-       case MSR_IA32_MC0_MISC+4:
-       case MSR_IA32_MC0_MISC+8:
-       case MSR_IA32_MC0_MISC+12:
-       case MSR_IA32_MC0_MISC+16:
-       case MSR_IA32_UCODE_REV:
-       case MSR_IA32_PERF_STATUS:
-       case MSR_IA32_EBL_CR_POWERON:
-               /* MTRR registers */
-       case 0xfe:
-       case 0x200 ... 0x2ff:
-               data = 0;
-               break;
-       case 0xcd: /* fsb frequency */
-               data = 3;
-               break;
-       case MSR_IA32_APICBASE:
-               data = kvm_get_apic_base(vcpu);
-               break;
-       case MSR_IA32_MISC_ENABLE:
-               data = vcpu->ia32_misc_enable_msr;
-               break;
-#ifdef CONFIG_X86_64
-       case MSR_EFER:
-               data = vcpu->shadow_efer;
-               break;
-#endif
-       default:
-               pr_unimpl(vcpu, "unhandled rdmsr: 0x%x\n", msr);
-               return 1;
-       }
-       *pdata = data;
-       return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_get_msr_common);
-
-/*
- * Reads an msr value (of 'msr_index') into 'pdata'.
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
-{
-       return kvm_x86_ops->get_msr(vcpu, msr_index, pdata);
-}
-
-#ifdef CONFIG_X86_64
-
-static void set_efer(struct kvm_vcpu *vcpu, u64 efer)
-{
-       if (efer & EFER_RESERVED_BITS) {
-               printk(KERN_DEBUG "set_efer: 0x%llx #GP, reserved bits\n",
-                      efer);
-               inject_gp(vcpu);
-               return;
-       }
-
-       if (is_paging(vcpu)
-           && (vcpu->shadow_efer & EFER_LME) != (efer & EFER_LME)) {
-               printk(KERN_DEBUG "set_efer: #GP, change LME while paging\n");
-               inject_gp(vcpu);
-               return;
-       }
-
-       kvm_x86_ops->set_efer(vcpu, efer);
-
-       efer &= ~EFER_LMA;
-       efer |= vcpu->shadow_efer & EFER_LMA;
-
-       vcpu->shadow_efer = efer;
-}
-
-#endif
-
-int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
-{
-       switch (msr) {
-#ifdef CONFIG_X86_64
-       case MSR_EFER:
-               set_efer(vcpu, data);
-               break;
-#endif
-       case MSR_IA32_MC0_STATUS:
-               pr_unimpl(vcpu, "%s: MSR_IA32_MC0_STATUS 0x%llx, nop\n",
-                      __FUNCTION__, data);
-               break;
-       case MSR_IA32_MCG_STATUS:
-               pr_unimpl(vcpu, "%s: MSR_IA32_MCG_STATUS 0x%llx, nop\n",
-                       __FUNCTION__, data);
-               break;
-       case MSR_IA32_UCODE_REV:
-       case MSR_IA32_UCODE_WRITE:
-       case 0x200 ... 0x2ff: /* MTRRs */
-               break;
-       case MSR_IA32_APICBASE:
-               kvm_set_apic_base(vcpu, data);
-               break;
-       case MSR_IA32_MISC_ENABLE:
-               vcpu->ia32_misc_enable_msr = data;
-               break;
-       default:
-               pr_unimpl(vcpu, "unhandled wrmsr: 0x%x\n", msr);
-               return 1;
-       }
-       return 0;
-}
-EXPORT_SYMBOL_GPL(kvm_set_msr_common);
-
-/*
- * Writes msr value into into the appropriate "register".
- * Returns 0 on success, non-0 otherwise.
- * Assumes vcpu_load() was already called.
- */
-int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
-{
-       return kvm_x86_ops->set_msr(vcpu, msr_index, data);
-}
-
 void kvm_resched(struct kvm_vcpu *vcpu)
 {
        if (!need_resched())

diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c
index a728af8..7862743 100644 (file)
--- a/drivers/kvm/x86.c
+++ b/drivers/kvm/x86.c
@@ -38,6 +38,7 @@
                          | X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
 
 #define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
+#define EFER_RESERVED_BITS 0xfffffffffffff2fe
 
 unsigned long segment_base(u16 selector)
 {
@@ -324,6 +325,44 @@ static u32 emulated_msrs[] = {
        MSR_IA32_MISC_ENABLE,
 };
 
+#ifdef CONFIG_X86_64
+
+static void set_efer(struct kvm_vcpu *vcpu, u64 efer)
+{
+       if (efer & EFER_RESERVED_BITS) {
+               printk(KERN_DEBUG "set_efer: 0x%llx #GP, reserved bits\n",
+                      efer);
+               inject_gp(vcpu);
+               return;
+       }
+
+       if (is_paging(vcpu)
+           && (vcpu->shadow_efer & EFER_LME) != (efer & EFER_LME)) {
+               printk(KERN_DEBUG "set_efer: #GP, change LME while paging\n");
+               inject_gp(vcpu);
+               return;
+       }
+
+       kvm_x86_ops->set_efer(vcpu, efer);
+
+       efer &= ~EFER_LMA;
+       efer |= vcpu->shadow_efer & EFER_LMA;
+
+       vcpu->shadow_efer = efer;
+}
+
+#endif
+
+/*
+ * Writes msr value into into the appropriate "register".
+ * Returns 0 on success, non-0 otherwise.
+ * Assumes vcpu_load() was already called.
+ */
+int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
+{
+       return kvm_x86_ops->set_msr(vcpu, msr_index, data);
+}
+
 /*
  * Adapt set_msr() to msr_io()'s calling convention
  */
@@ -332,6 +371,101 @@ static int do_set_msr(struct kvm_vcpu *vcpu, unsigned index, u64 *data)
        return kvm_set_msr(vcpu, index, *data);
 }
 
+
+int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
+{
+       switch (msr) {
+#ifdef CONFIG_X86_64
+       case MSR_EFER:
+               set_efer(vcpu, data);
+               break;
+#endif
+       case MSR_IA32_MC0_STATUS:
+               pr_unimpl(vcpu, "%s: MSR_IA32_MC0_STATUS 0x%llx, nop\n",
+                      __FUNCTION__, data);
+               break;
+       case MSR_IA32_MCG_STATUS:
+               pr_unimpl(vcpu, "%s: MSR_IA32_MCG_STATUS 0x%llx, nop\n",
+                       __FUNCTION__, data);
+               break;
+       case MSR_IA32_UCODE_REV:
+       case MSR_IA32_UCODE_WRITE:
+       case 0x200 ... 0x2ff: /* MTRRs */
+               break;
+       case MSR_IA32_APICBASE:
+               kvm_set_apic_base(vcpu, data);
+               break;
+       case MSR_IA32_MISC_ENABLE:
+               vcpu->ia32_misc_enable_msr = data;
+               break;
+       default:
+               pr_unimpl(vcpu, "unhandled wrmsr: 0x%x\n", msr);
+               return 1;
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(kvm_set_msr_common);
+
+
+/*
+ * Reads an msr value (of 'msr_index') into 'pdata'.
+ * Returns 0 on success, non-0 otherwise.
+ * Assumes vcpu_load() was already called.
+ */
+int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
+{
+       return kvm_x86_ops->get_msr(vcpu, msr_index, pdata);
+}
+
+int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+{
+       u64 data;
+
+       switch (msr) {
+       case 0xc0010010: /* SYSCFG */
+       case 0xc0010015: /* HWCR */
+       case MSR_IA32_PLATFORM_ID:
+       case MSR_IA32_P5_MC_ADDR:
+       case MSR_IA32_P5_MC_TYPE:
+       case MSR_IA32_MC0_CTL:
+       case MSR_IA32_MCG_STATUS:
+       case MSR_IA32_MCG_CAP:
+       case MSR_IA32_MC0_MISC:
+       case MSR_IA32_MC0_MISC+4:
+       case MSR_IA32_MC0_MISC+8:
+       case MSR_IA32_MC0_MISC+12:
+       case MSR_IA32_MC0_MISC+16:
+       case MSR_IA32_UCODE_REV:
+       case MSR_IA32_PERF_STATUS:
+       case MSR_IA32_EBL_CR_POWERON:
+               /* MTRR registers */
+       case 0xfe:
+       case 0x200 ... 0x2ff:
+               data = 0;
+               break;
+       case 0xcd: /* fsb frequency */
+               data = 3;
+               break;
+       case MSR_IA32_APICBASE:
+               data = kvm_get_apic_base(vcpu);
+               break;
+       case MSR_IA32_MISC_ENABLE:
+               data = vcpu->ia32_misc_enable_msr;
+               break;
+#ifdef CONFIG_X86_64
+       case MSR_EFER:
+               data = vcpu->shadow_efer;
+               break;
+#endif
+       default:
+               pr_unimpl(vcpu, "unhandled rdmsr: 0x%x\n", msr);
+               return 1;
+       }
+       *pdata = data;
+       return 0;
+}
+EXPORT_SYMBOL_GPL(kvm_get_msr_common);
+
 /*
  * Read or write a bunch of msrs. All parameters are kernel addresses.
  *