diff mbox series

[v7,03/12] KVM: Remove CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL

Message ID 20230722022251.3446223-4-rananta@google.com (mailing list archive)
State Superseded
Headers show
Series KVM: arm64: Add support for FEAT_TLBIRANGE | expand

Checks

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conchuod/cover_letter success Series has a cover letter
conchuod/tree_selection success Guessed tree name to be for-next at HEAD 471aba2e4760
conchuod/fixes_present success Fixes tag not required for -next series
conchuod/maintainers_pattern success MAINTAINERS pattern errors before the patch: 4 and now 4
conchuod/verify_signedoff success Signed-off-by tag matches author and committer
conchuod/kdoc success Errors and warnings before: 0 this patch: 0
conchuod/build_rv64_clang_allmodconfig success Errors and warnings before: 9 this patch: 9
conchuod/module_param success Was 0 now: 0
conchuod/build_rv64_gcc_allmodconfig success Errors and warnings before: 18 this patch: 18
conchuod/build_rv32_defconfig success Build OK
conchuod/dtb_warn_rv64 success Errors and warnings before: 3 this patch: 3
conchuod/header_inline success No static functions without inline keyword in header files
conchuod/checkpatch success total: 0 errors, 0 warnings, 0 checks, 23 lines checked
conchuod/build_rv64_nommu_k210_defconfig success Build OK
conchuod/verify_fixes success No Fixes tag
conchuod/build_rv64_nommu_virt_defconfig success Build OK

Commit Message

Raghavendra Rao Ananta July 22, 2023, 2:22 a.m. UTC
kvm_arch_flush_remote_tlbs() or CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
are two mechanisms to solve the same problem, allowing
architecture-specific code to provide a non-IPI implementation of
remote TLB flushing.

Dropping CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL allows KVM to standardize
all architectures on kvm_arch_flush_remote_tlbs() instead of
maintaining two mechanisms.

Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
---
 virt/kvm/Kconfig    | 3 ---
 virt/kvm/kvm_main.c | 2 --
 2 files changed, 5 deletions(-)

Comments

Shaoqin Huang July 24, 2023, 9:13 a.m. UTC | #1
On 7/22/23 10:22, Raghavendra Rao Ananta wrote:
> kvm_arch_flush_remote_tlbs() or CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
> are two mechanisms to solve the same problem, allowing
> architecture-specific code to provide a non-IPI implementation of
> remote TLB flushing.
> 
> Dropping CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL allows KVM to standardize
> all architectures on kvm_arch_flush_remote_tlbs() instead of
> maintaining two mechanisms.
> 
> Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
> ---
>   virt/kvm/Kconfig    | 3 ---
>   virt/kvm/kvm_main.c | 2 --
>   2 files changed, 5 deletions(-)
> 
> diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
> index b74916de5183..484d0873061c 100644
> --- a/virt/kvm/Kconfig
> +++ b/virt/kvm/Kconfig
> @@ -62,9 +62,6 @@ config HAVE_KVM_CPU_RELAX_INTERCEPT
>   config KVM_VFIO
>          bool
>   
> -config HAVE_KVM_ARCH_TLB_FLUSH_ALL
> -       bool
> -
>   config HAVE_KVM_INVALID_WAKEUPS
>          bool
>   
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 70e5479797ac..d6b050786155 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -345,7 +345,6 @@ bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req)
>   }
>   EXPORT_SYMBOL_GPL(kvm_make_all_cpus_request);
>   
> -#ifndef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
>   void kvm_flush_remote_tlbs(struct kvm *kvm)
>   {
>   	++kvm->stat.generic.remote_tlb_flush_requests;
> @@ -366,7 +365,6 @@ void kvm_flush_remote_tlbs(struct kvm *kvm)
>   		++kvm->stat.generic.remote_tlb_flush;
>   }
>   EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs);
> -#endif
>   
>   static void kvm_flush_shadow_all(struct kvm *kvm)
>   {
diff mbox series

Patch

diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
index b74916de5183..484d0873061c 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -62,9 +62,6 @@  config HAVE_KVM_CPU_RELAX_INTERCEPT
 config KVM_VFIO
        bool
 
-config HAVE_KVM_ARCH_TLB_FLUSH_ALL
-       bool
-
 config HAVE_KVM_INVALID_WAKEUPS
        bool
 
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 70e5479797ac..d6b050786155 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -345,7 +345,6 @@  bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req)
 }
 EXPORT_SYMBOL_GPL(kvm_make_all_cpus_request);
 
-#ifndef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL
 void kvm_flush_remote_tlbs(struct kvm *kvm)
 {
 	++kvm->stat.generic.remote_tlb_flush_requests;
@@ -366,7 +365,6 @@  void kvm_flush_remote_tlbs(struct kvm *kvm)
 		++kvm->stat.generic.remote_tlb_flush;
 }
 EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs);
-#endif
 
 static void kvm_flush_shadow_all(struct kvm *kvm)
 {