diff mbox series

[23/44] KVM: RISC-V: Tag init functions and data with __init, __ro_after_init

Message ID 20221102231911.3107438-24-seanjc@google.com
State New
Headers
Series KVM: Rework kvm_init() and hardware enabling |

Commit Message

Sean Christopherson Nov. 2, 2022, 11:18 p.m. UTC 
  Now that KVM setup is handled directly in riscv_kvm_init(), tag functions
and data that are used/set only during init with __init/__ro_after_init.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/riscv/include/asm/kvm_host.h |  6 +++---
 arch/riscv/kvm/mmu.c              | 12 ++++++------
 arch/riscv/kvm/vmid.c             |  4 ++--
 3 files changed, 11 insertions(+), 11 deletions(-)

Comments

Anup Patel Nov. 7, 2022, 3:10 a.m. UTC | #1 
On Thu, Nov 3, 2022 at 4:49 AM Sean Christopherson <seanjc@google.com> wrote:
>
> Now that KVM setup is handled directly in riscv_kvm_init(), tag functions
> and data that are used/set only during init with __init/__ro_after_init.
>
> Signed-off-by: Sean Christopherson <seanjc@google.com>

For KVM RISC-V:
Acked-by: Anup Patel <anup@brainfault.org>

Thanks,
Anup

> ---
>  arch/riscv/include/asm/kvm_host.h |  6 +++---
>  arch/riscv/kvm/mmu.c              | 12 ++++++------
>  arch/riscv/kvm/vmid.c             |  4 ++--
>  3 files changed, 11 insertions(+), 11 deletions(-)
>
> diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
> index 8c771fc4f5d2..778ff0f282b7 100644
> --- a/arch/riscv/include/asm/kvm_host.h
> +++ b/arch/riscv/include/asm/kvm_host.h
> @@ -295,11 +295,11 @@ int kvm_riscv_gstage_map(struct kvm_vcpu *vcpu,
>  int kvm_riscv_gstage_alloc_pgd(struct kvm *kvm);
>  void kvm_riscv_gstage_free_pgd(struct kvm *kvm);
>  void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu);
> -void kvm_riscv_gstage_mode_detect(void);
> -unsigned long kvm_riscv_gstage_mode(void);
> +void __init kvm_riscv_gstage_mode_detect(void);
> +unsigned long __init kvm_riscv_gstage_mode(void);
>  int kvm_riscv_gstage_gpa_bits(void);
>
> -void kvm_riscv_gstage_vmid_detect(void);
> +void __init kvm_riscv_gstage_vmid_detect(void);
>  unsigned long kvm_riscv_gstage_vmid_bits(void);
>  int kvm_riscv_gstage_vmid_init(struct kvm *kvm);
>  bool kvm_riscv_gstage_vmid_ver_changed(struct kvm_vmid *vmid);
> diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
> index 3620ecac2fa1..f42a34c7879a 100644
> --- a/arch/riscv/kvm/mmu.c
> +++ b/arch/riscv/kvm/mmu.c
> @@ -20,12 +20,12 @@
>  #include <asm/pgtable.h>
>
>  #ifdef CONFIG_64BIT
> -static unsigned long gstage_mode = (HGATP_MODE_SV39X4 << HGATP_MODE_SHIFT);
> -static unsigned long gstage_pgd_levels = 3;
> +static unsigned long gstage_mode __ro_after_init = (HGATP_MODE_SV39X4 << HGATP_MODE_SHIFT);
> +static unsigned long gstage_pgd_levels __ro_after_init = 3;
>  #define gstage_index_bits      9
>  #else
> -static unsigned long gstage_mode = (HGATP_MODE_SV32X4 << HGATP_MODE_SHIFT);
> -static unsigned long gstage_pgd_levels = 2;
> +static unsigned long gstage_mode __ro_after_init = (HGATP_MODE_SV32X4 << HGATP_MODE_SHIFT);
> +static unsigned long gstage_pgd_levels __ro_after_init = 2;
>  #define gstage_index_bits      10
>  #endif
>
> @@ -760,7 +760,7 @@ void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu)
>                 kvm_riscv_local_hfence_gvma_all();
>  }
>
> -void kvm_riscv_gstage_mode_detect(void)
> +void __init kvm_riscv_gstage_mode_detect(void)
>  {
>  #ifdef CONFIG_64BIT
>         /* Try Sv57x4 G-stage mode */
> @@ -784,7 +784,7 @@ void kvm_riscv_gstage_mode_detect(void)
>  #endif
>  }
>
> -unsigned long kvm_riscv_gstage_mode(void)
> +unsigned long __init kvm_riscv_gstage_mode(void)
>  {
>         return gstage_mode >> HGATP_MODE_SHIFT;
>  }
> diff --git a/arch/riscv/kvm/vmid.c b/arch/riscv/kvm/vmid.c
> index 6cd93995fb65..5246da1c9167 100644
> --- a/arch/riscv/kvm/vmid.c
> +++ b/arch/riscv/kvm/vmid.c
> @@ -17,10 +17,10 @@
>
>  static unsigned long vmid_version = 1;
>  static unsigned long vmid_next;
> -static unsigned long vmid_bits;
> +static unsigned long vmid_bits __ro_after_init;
>  static DEFINE_SPINLOCK(vmid_lock);
>
> -void kvm_riscv_gstage_vmid_detect(void)
> +void __init kvm_riscv_gstage_vmid_detect(void)
>  {
>         unsigned long old;
>
> --
> 2.38.1.431.g37b22c650d-goog
>
diff mbox series

Patch

diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h
index 8c771fc4f5d2..778ff0f282b7 100644
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -295,11 +295,11 @@  int kvm_riscv_gstage_map(struct kvm_vcpu *vcpu,
 int kvm_riscv_gstage_alloc_pgd(struct kvm *kvm);
 void kvm_riscv_gstage_free_pgd(struct kvm *kvm);
 void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu);
-void kvm_riscv_gstage_mode_detect(void);
-unsigned long kvm_riscv_gstage_mode(void);
+void __init kvm_riscv_gstage_mode_detect(void);
+unsigned long __init kvm_riscv_gstage_mode(void);
 int kvm_riscv_gstage_gpa_bits(void);
 
-void kvm_riscv_gstage_vmid_detect(void);
+void __init kvm_riscv_gstage_vmid_detect(void);
 unsigned long kvm_riscv_gstage_vmid_bits(void);
 int kvm_riscv_gstage_vmid_init(struct kvm *kvm);
 bool kvm_riscv_gstage_vmid_ver_changed(struct kvm_vmid *vmid);
diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
index 3620ecac2fa1..f42a34c7879a 100644
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
@@ -20,12 +20,12 @@ 
 #include <asm/pgtable.h>
 
 #ifdef CONFIG_64BIT
-static unsigned long gstage_mode = (HGATP_MODE_SV39X4 << HGATP_MODE_SHIFT);
-static unsigned long gstage_pgd_levels = 3;
+static unsigned long gstage_mode __ro_after_init = (HGATP_MODE_SV39X4 << HGATP_MODE_SHIFT);
+static unsigned long gstage_pgd_levels __ro_after_init = 3;
 #define gstage_index_bits	9
 #else
-static unsigned long gstage_mode = (HGATP_MODE_SV32X4 << HGATP_MODE_SHIFT);
-static unsigned long gstage_pgd_levels = 2;
+static unsigned long gstage_mode __ro_after_init = (HGATP_MODE_SV32X4 << HGATP_MODE_SHIFT);
+static unsigned long gstage_pgd_levels __ro_after_init = 2;
 #define gstage_index_bits	10
 #endif
 
@@ -760,7 +760,7 @@  void kvm_riscv_gstage_update_hgatp(struct kvm_vcpu *vcpu)
 		kvm_riscv_local_hfence_gvma_all();
 }
 
-void kvm_riscv_gstage_mode_detect(void)
+void __init kvm_riscv_gstage_mode_detect(void)
 {
 #ifdef CONFIG_64BIT
 	/* Try Sv57x4 G-stage mode */
@@ -784,7 +784,7 @@  void kvm_riscv_gstage_mode_detect(void)
 #endif
 }
 
-unsigned long kvm_riscv_gstage_mode(void)
+unsigned long __init kvm_riscv_gstage_mode(void)
 {
 	return gstage_mode >> HGATP_MODE_SHIFT;
 }
diff --git a/arch/riscv/kvm/vmid.c b/arch/riscv/kvm/vmid.c
index 6cd93995fb65..5246da1c9167 100644
--- a/arch/riscv/kvm/vmid.c
+++ b/arch/riscv/kvm/vmid.c
@@ -17,10 +17,10 @@ 
 
 static unsigned long vmid_version = 1;
 static unsigned long vmid_next;
-static unsigned long vmid_bits;
+static unsigned long vmid_bits __ro_after_init;
 static DEFINE_SPINLOCK(vmid_lock);
 
-void kvm_riscv_gstage_vmid_detect(void)
+void __init kvm_riscv_gstage_vmid_detect(void)
 {
 	unsigned long old;