Commit 4a8c4c4e authored Jan 30, 2008 by Glauber de Oliveira Costa Committed by Ingo Molnar Jan 30, 2008

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>

parent 2e47d3e6

include/asm-x86/paravirt.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -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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