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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-01-30 13:32:07 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:32:07 +0100
commit4a8c4c4e10d1bc2c3bd80caabb6a76a66849f7e8 (patch)
treeb93a8cef2dd647128cea3d28bf86bc97eaff074f /include
parent2e47d3e6c35bb5b78fea2b2584c7eeaf782f138d (diff)
downloadop-kernel-dev-4a8c4c4e10d1bc2c3bd80caabb6a76a66849f7e8.zip
op-kernel-dev-4a8c4c4e10d1bc2c3bd80caabb6a76a66849f7e8.tar.gz
x86: add macro for privileged 64-bit operation
i386 has a macro GET_CR0_INTO_EAX, used in early trap handling code. x86_64 has similar needs, only it needs to put cr2 into rcx. We provide a macro for such task, in the same way Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/asm-x86/paravirt.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 0735a90..7d1c126 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -1227,6 +1227,12 @@ static inline unsigned long __raw_local_irq_save(void)
push %ecx; push %edx; \
call *pv_cpu_ops+PV_CPU_read_cr0; \
pop %edx; pop %ecx
+#else
+#define GET_CR2_INTO_RCX \
+ call *pv_mmu_ops+PV_MMU_read_cr2; \
+ movq %rax, %rcx; \
+ xorq %rax, %rax;
+
#endif
#endif /* __ASSEMBLY__ */
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