[PATCH v2 29/50] KVM: Drop kvm_arch_{init,exit}() hooks
Sean Christopherson
seanjc at google.com
Wed Nov 30 15:09:13 PST 2022
Drop kvm_arch_init() and kvm_arch_exit() now that all implementations
are nops.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc at google.com>
Reviewed-by: Eric Farman <farman at linux.ibm.com> # s390
Reviewed-by: Philippe Mathieu-Daudé <philmd at linaro.org>
Acked-by: Anup Patel <anup at brainfault.org>
---
arch/arm64/kvm/arm.c | 11 -----------
arch/mips/kvm/mips.c | 10 ----------
arch/powerpc/include/asm/kvm_host.h | 1 -
arch/powerpc/kvm/powerpc.c | 5 -----
arch/riscv/kvm/main.c | 9 ---------
arch/s390/kvm/kvm-s390.c | 10 ----------
arch/x86/kvm/x86.c | 10 ----------
include/linux/kvm_host.h | 3 ---
virt/kvm/kvm_main.c | 19 ++-----------------
9 files changed, 2 insertions(+), 76 deletions(-)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 4d34abcfc9a9..936ef7d1ea94 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -2289,17 +2289,6 @@ static __init int kvm_arm_init(void)
return err;
}
-int kvm_arch_init(void *opaque)
-{
- return 0;
-}
-
-/* NOP: Compiling as a module not supported */
-void kvm_arch_exit(void)
-{
-
-}
-
static int __init early_kvm_mode_cfg(char *arg)
{
if (!arg)
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index ae7a24342fdf..3cade648827a 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -1010,16 +1010,6 @@ long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
return r;
}
-int kvm_arch_init(void *opaque)
-{
- return 0;
-}
-
-void kvm_arch_exit(void)
-{
-
-}
-
int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs)
{
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 5d2c3a487e73..0a80e80c7b9e 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -881,7 +881,6 @@ static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
static inline void kvm_arch_flush_shadow_all(struct kvm *kvm) {}
static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
-static inline void kvm_arch_exit(void) {}
static inline void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu) {}
static inline void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu) {}
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index d44b85ba8cef..01d0f9935e6c 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -2539,11 +2539,6 @@ void kvmppc_init_lpid(unsigned long nr_lpids_param)
}
EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
-int kvm_arch_init(void *opaque)
-{
- return 0;
-}
-
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ppc_instr);
void kvm_arch_create_vcpu_debugfs(struct kvm_vcpu *vcpu, struct dentry *debugfs_dentry)
diff --git a/arch/riscv/kvm/main.c b/arch/riscv/kvm/main.c
index cb063b8a9a0f..4710a6751687 100644
--- a/arch/riscv/kvm/main.c
+++ b/arch/riscv/kvm/main.c
@@ -65,15 +65,6 @@ void kvm_arch_hardware_disable(void)
csr_write(CSR_HIDELEG, 0);
}
-int kvm_arch_init(void *opaque)
-{
- return 0;
-}
-
-void kvm_arch_exit(void)
-{
-}
-
static int __init riscv_kvm_init(void)
{
const char *str;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 66d162723d21..25b08b956888 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -541,16 +541,6 @@ static void __kvm_s390_exit(void)
debug_unregister(kvm_s390_dbf_uv);
}
-int kvm_arch_init(void *opaque)
-{
- return 0;
-}
-
-void kvm_arch_exit(void)
-{
-
-}
-
/* Section: device related */
long kvm_arch_dev_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 45184ca89317..66f16458aa97 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -9277,16 +9277,6 @@ static inline void kvm_ops_update(struct kvm_x86_init_ops *ops)
kvm_pmu_ops_update(ops->pmu_ops);
}
-int kvm_arch_init(void *opaque)
-{
- return 0;
-}
-
-void kvm_arch_exit(void)
-{
-
-}
-
static int __kvm_x86_vendor_init(struct kvm_x86_init_ops *ops)
{
u64 host_pat;
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index f2e0e78d2d92..7dde28333e7c 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1439,9 +1439,6 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
struct kvm_guest_debug *dbg);
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu);
-int kvm_arch_init(void *opaque);
-void kvm_arch_exit(void);
-
void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 0e62887e8ce1..a4a10a0b322f 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -5852,20 +5852,8 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
int r;
int cpu;
- /*
- * FIXME: Get rid of kvm_arch_init(), vendor code should call arch code
- * directly. Note, kvm_arch_init() _must_ be called before anything
- * else as x86 relies on checks buried in kvm_arch_init() to guard
- * against multiple calls to kvm_init().
- */
- r = kvm_arch_init(opaque);
- if (r)
- return r;
-
- if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) {
- r = -ENOMEM;
- goto err_hw_enabled;
- }
+ if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL))
+ return -ENOMEM;
c.ret = &r;
c.opaque = opaque;
@@ -5953,8 +5941,6 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
cpuhp_remove_state_nocalls(CPUHP_AP_KVM_STARTING);
out_free_2:
free_cpumask_var(cpus_hardware_enabled);
-err_hw_enabled:
- kvm_arch_exit();
return r;
}
EXPORT_SYMBOL_GPL(kvm_init);
@@ -5982,7 +5968,6 @@ void kvm_exit(void)
on_each_cpu(hardware_disable_nolock, NULL, 1);
kvm_irqfd_exit();
free_cpumask_var(cpus_hardware_enabled);
- kvm_arch_exit();
}
EXPORT_SYMBOL_GPL(kvm_exit);
--
2.38.1.584.g0f3c55d4c2-goog
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