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arm64: KVM: Use lm_alias() for kvm_ksym_ref()

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For historical reasons, we open-code lm_alias() in kvm_ksym_ref().

Let's use lm_alias() to avoid duplication and make things clearer.

As we have to pull this from <linux/mm.h> (which is not safe for
inclusion in assembly), we may as well move the kvm_ksym_ref()
definition into the existing !__ASSEMBLY__ block.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Mark Rutland 2018-05-10 12:13:47 +01:00 committed by Marc Zyngier
parent 75bc37fefc
commit 46c4a30b0b
1 changed files with 5 additions and 2 deletions
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7
arch/arm64/include/asm/kvm_asm.h
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@ -33,16 +33,19 @@
#define KVM_ARM64_DEBUG_DIRTY_SHIFT 0
#define KVM_ARM64_DEBUG_DIRTY (1 << KVM_ARM64_DEBUG_DIRTY_SHIFT)
#ifndef __ASSEMBLY__
#include <linux/mm.h>
/* Translate a kernel address of @sym into its equivalent linear mapping */
#define kvm_ksym_ref(sym) \
({ \
void *val = &sym; \
if (!is_kernel_in_hyp_mode()) \
val = phys_to_virt((u64)&sym - kimage_voffset); \
val = lm_alias(&sym); \
val; \
})
#ifndef __ASSEMBLY__
struct kvm;
struct kvm_vcpu;