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| author | Ingo Molnar <mingo@elte.hu> | 2008-07-21 08:57:15 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-21 09:03:32 (GMT) |
| commit | 33a37eb411d193851c334060780ab834ba534292 (patch) | |
| tree | 15eff4d19335ec69ef2c222c800a0073cf10b924 | |
| parent | e27772b48df91a954a74b1411b57d83b945a58c7 (diff) | |
| download | linux-33a37eb411d193851c334060780ab834ba534292.tar.xz | |
KVM: fix exception entry / build bug, on 64-bit
-tip testing found this build bug:
arch/x86/kvm/built-in.o:(.text.fixup+0x1): relocation truncated to fit: R_X86_64_32 against `.text'
arch/x86/kvm/built-in.o:(.text.fixup+0xb): relocation truncated to fit: R_X86_64_32 against `.text'
arch/x86/kvm/built-in.o:(.text.fixup+0x15): relocation truncated to fit: R_X86_64_32 against `.text'
arch/x86/kvm/built-in.o:(.text.fixup+0x1f): relocation truncated to fit: R_X86_64_32 against `.text'
arch/x86/kvm/built-in.o:(.text.fixup+0x29): relocation truncated to fit: R_X86_64_32 against `.text'
Introduced by commit 4ecac3fd. The problem is that 'push' will default
to 32-bit, which is not wide enough as a fixup address. (and which would
crash on any real fixup event even if it was wide enough)
Introduce KVM_EX_PUSH to get the proper address push width on 64-bit too.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | include/asm-x86/kvm_host.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h index f995783..fdde0be 100644 --- a/include/asm-x86/kvm_host.h +++ b/include/asm-x86/kvm_host.h @@ -703,9 +703,11 @@ enum { vcpu, 0, 0, 0, 0, 0, 0) #ifdef CONFIG_64BIT -#define KVM_EX_ENTRY ".quad" +# define KVM_EX_ENTRY ".quad" +# define KVM_EX_PUSH "pushq" #else -#define KVM_EX_ENTRY ".long" +# define KVM_EX_ENTRY ".long" +# define KVM_EX_PUSH "pushl" #endif /* @@ -719,7 +721,7 @@ asmlinkage void kvm_handle_fault_on_reboot(void); "666: " insn "\n\t" \ ".pushsection .text.fixup, \"ax\" \n" \ "667: \n\t" \ - "push $666b \n\t" \ + KVM_EX_PUSH " $666b \n\t" \ "jmp kvm_handle_fault_on_reboot \n\t" \ ".popsection \n\t" \ ".pushsection __ex_table, \"a\" \n\t" \ |