Re: compilation on ubuntu 32 bit host?

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

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Avi Kivity wrote:
> Gildas wrote:
>>
>> I'll test it happily
>
> attached.
>

[failed live on IRC]

Please try this new one.  It will display a few lines before crashing.

(revert the previous patch before)

-- 
error compiling committee.c: too many arguments to function


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Index: kvm_main.c
===================================================================
--- kvm_main.c	(revision 3648)
+++ kvm_main.c	(working copy)
@@ -555,27 +555,58 @@
 	return 0;
 }
 
-static __init int vmx_disabled_by_bios(void)
+static int vmx_disabled;
+
+static __init void __vmx_disabled_by_bios(void *garbage)
 {
 	u64 msr;
 
 	rdmsrl(MSR_IA32_FEATURE_CONTROL, msr);
-	return (msr & 5) == 1; /* locked but not enabled */
+	if ((msr & 5) == 1) { /* locked but not enabled */
+		vmx_disabled = 1;
+		smp_wmb();
+	}
 }
 
+static __init int vmx_disabled_by_bios(void)
+{
+	on_each_cpu(__vmx_disabled_by_bios, 0, 0, 1);
+	smp_rmb();
+	return vmx_disabled;
+}
+
 static __init void kvm_enable(void *garbage)
 {
 	int cpu = raw_smp_processor_id();
 	u64 phys_addr = __pa(per_cpu(vmxarea, cpu));
 	u64 old;
+	u64 cr0f0, cr0f1, cr4f0, cr4f1;
 
 	rdmsrl(MSR_IA32_FEATURE_CONTROL, old);
 	if ((old & 5) == 0)
 		/* enable and lock */
 		wrmsrl(MSR_IA32_FEATURE_CONTROL, old | 5);
 	write_cr4(read_cr4() | CR4_VMXE); /* FIXME: not cpu hotplug safe */
+	printk(KERN_ERR "enabling vmx on cpu %d\n", raw_smp_processor_id());
+	printk(KERN_ERR "cr0 %lx cr4 %lx phys_addr %llx\n",
+	       read_cr0(), read_cr4(), phys_addr);
+
+#define MSR_IA32_VMX_CR0_FIXED0 0x486
+#define MSR_IA32_VMX_CR0_FIXED1 0x487
+
+#define MSR_IA32_VMX_CR4_FIXED0 0x488
+#define MSR_IA32_VMX_CR4_FIXED1 0x489
+
+	rdmsrl(MSR_IA32_VMX_CR0_FIXED0, cr0f0);
+	rdmsrl(MSR_IA32_VMX_CR0_FIXED1, cr0f1);
+	rdmsrl(MSR_IA32_VMX_CR4_FIXED0, cr4f0);
+	rdmsrl(MSR_IA32_VMX_CR4_FIXED1, cr4f1);
+	printk(KERN_ERR "cr0 fixed %llx %llx\n", cr0f0, cr0f1);
+	printk(KERN_ERR "cr4 fixed %llx %llx\n", cr4f0, cr4f1);
+	printk(KERN_ERR "doing it now!\n");
 	asm volatile (ASM_VMX_VMXON_RAX : : "a"(&phys_addr), "m"(phys_addr)
 		      : "memory", "cc");
+	printk(KERN_ERR "done\n");
 }
 
 static void kvm_disable(void *garbage)

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