Messages in this thread Patch in this message | | | From | David Brazdil <> | Subject | [PATCH v4 04/15] arm64: kvm: Use build-time defines in has_vhe() | Date | Thu, 25 Jun 2020 14:14:09 +0100 |
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Build system compiles hyp code with macros specifying if the code belongs to VHE or nVHE. Use these macros to evaluate has_vhe() at compile time.
Signed-off-by: David Brazdil <dbrazdil@google.com> --- arch/arm64/include/asm/virt.h | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/include/asm/virt.h b/arch/arm64/include/asm/virt.h index 5051b388c654..09977acc007d 100644 --- a/arch/arm64/include/asm/virt.h +++ b/arch/arm64/include/asm/virt.h @@ -85,10 +85,17 @@ static inline bool is_kernel_in_hyp_mode(void) static __always_inline bool has_vhe(void) { - if (cpus_have_final_cap(ARM64_HAS_VIRT_HOST_EXTN)) + /* + * The following macros are defined for code specic to VHE/nVHE. + * If has_vhe() is inlined into those compilation units, it can + * be determined statically. Otherwise fall back to caps. + */ + if (__is_defined(__KVM_VHE_HYPERVISOR__)) return true; - - return false; + else if (__is_defined(__KVM_NVHE_HYPERVISOR__)) + return false; + else + return cpus_have_final_cap(ARM64_HAS_VIRT_HOST_EXTN); } #endif /* __ASSEMBLY__ */ -- 2.27.0
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