[PATCH v2 25/50] KVM: RISC-V: Tag init functions and data with __init, __ro_after_init

From: Sean Christopherson
Date: Wed Nov 30 2022 - 18:14:04 EST


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@xxxxxxxxxx>
Acked-by: Anup Patel <anup@xxxxxxxxxxxxxx>
---
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;

--
2.38.1.584.g0f3c55d4c2-goog