Re: [PATCH v8 02/14] KVM: Declare kvm_arch_flush_remote_tlbs() globally

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On 8/9/23 09:13, Raghavendra Rao Ananta wrote:
There's no reason for the architectures to declare
kvm_arch_flush_remote_tlbs() in their own headers. Hence to
avoid this duplication, make the declaration global, leaving
the architectures to define only __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS
as needed.

Signed-off-by: Raghavendra Rao Ananta <rananta@xxxxxxxxxx>
---
  arch/mips/include/asm/kvm_host.h | 1 -
  include/linux/kvm_host.h         | 2 ++
  2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 9b0ad8f3bf327..54a85f1d4f2c8 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -897,6 +897,5 @@ static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
  static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS
-int kvm_arch_flush_remote_tlbs(struct kvm *kvm);
#endif /* __MIPS_KVM_HOST_H__ */
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index e3f968b38ae97..ade5d4500c2ce 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1484,6 +1484,8 @@ static inline int kvm_arch_flush_remote_tlbs(struct kvm *kvm)
  {
  	return -ENOTSUPP;
  }
+#else
+int kvm_arch_flush_remote_tlbs(struct kvm *kvm);
  #endif
#ifdef __KVM_HAVE_ARCH_NONCOHERENT_DMA

Is the declaration inconsistent to that in arch/x86/include/asm/kvm_host.h?
In order to keep them consistent, I guess we need move kvm_arch_flush_remote_tlbs()
from x86's header file to arch/x86/kvm/mmu/mmu.c and 'inline' needs to be dropped.

Thanks,
Gavin




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