Find the physical address through kmap_atomic_to_page().
Signed-off-by: Marcelo Tosatti <[EMAIL PROTECTED]>
Index: kvm.first/arch/x86/kernel/kvm.c
===================================================================
--- kvm.first.orig/arch/x86/kernel/kvm.c
+++ kvm.first/arch/x86/kernel/kvm.c
@@ -26,6 +26,7 @@
#include <linux/cpu.h>
#include <linux/mm.h>
#include <linux/hardirq.h>
+#include <linux/highmem.h>
#include <asm/tlbflush.h>
#include <asm/asm.h>
@@ -205,11 +206,23 @@ static void __init setup_guest_cr3_cache
static void kvm_mmu_write(void *dest, u64 val)
{
- struct kvm_mmu_op_write_pte wpte = {
- .header.op = KVM_MMU_OP_WRITE_PTE,
- .pte_phys = (unsigned long)__pa(dest),
- .pte_val = val,
- };
+ __u64 pte_phys;
+ struct kvm_mmu_op_write_pte wpte;
+
+#ifdef CONFIG_HIGHPTE
+ struct page *page;
+ unsigned long dst = (unsigned long) dest;
+
+ page = kmap_atomic_to_page(dest);
+ pte_phys = page_to_pfn(page);
+ pte_phys <<= PAGE_SHIFT;
+ pte_phys += (dst & ~(PAGE_MASK));
+#else
+ pte_phys = (unsigned long)__pa(dest);
+#endif
+ wpte.header.op = KVM_MMU_OP_WRITE_PTE;
+ wpte.pte_val = val;
+ wpte.pte_phys = pte_phys;
kvm_deferred_mmu_op(&wpte, sizeof wpte);
}
--
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