| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20221102231911.3107438-28-seanjc@google.com>
Date: Wed, 2 Nov 2022 23:18:54 +0000
From: Sean Christopherson <seanjc@...gle.com>
To: Paolo Bonzini <pbonzini@...hat.com>, Marc Zyngier <maz@...nel.org>,
Huacai Chen <chenhuacai@...nel.org>,
Aleksandar Markovic <aleksandar.qemu.devel@...il.com>,
Anup Patel <anup@...infault.org>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Janosch Frank <frankja@...ux.ibm.com>,
Claudio Imbrenda <imbrenda@...ux.ibm.com>,
Matthew Rosato <mjrosato@...ux.ibm.com>,
Eric Farman <farman@...ux.ibm.com>,
Sean Christopherson <seanjc@...gle.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>
Cc: James Morse <james.morse@....com>,
Alexandru Elisei <alexandru.elisei@....com>,
Suzuki K Poulose <suzuki.poulose@....com>,
Oliver Upton <oliver.upton@...ux.dev>,
Atish Patra <atishp@...shpatra.org>,
David Hildenbrand <david@...hat.com>, kvm@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
kvmarm@...ts.cs.columbia.edu, linux-mips@...r.kernel.org,
linuxppc-dev@...ts.ozlabs.org, kvm-riscv@...ts.infradead.org,
linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
linux-kernel@...r.kernel.org,
Isaku Yamahata <isaku.yamahata@...el.com>,
Fabiano Rosas <farosas@...ux.ibm.com>,
Michael Ellerman <mpe@...erman.id.au>,
Chao Gao <chao.gao@...el.com>,
Thomas Gleixner <tglx@...utronix.de>,
Yuan Yao <yuan.yao@...el.com>
Subject: [PATCH 27/44] KVM: Drop kvm_arch_{init,exit}() hooks
Drop kvm_arch_init() and kvm_arch_exit() now that all implementations
are nops.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
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 6e0061eac627..75c5125b0dd3 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -2284,17 +2284,6 @@ 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 36c27381a769..34278042ad27 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -2525,11 +2525,6 @@ 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 f6ae845bc1c1..7c1c6d81b5d7 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -533,16 +533,6 @@ 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 218707597bea..2b4530a33298 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -9271,16 +9271,6 @@ 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 9b52bd40be56..6c2a28c4c684 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1423,9 +1423,6 @@ 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 27ce263a80e4..17c852cb6842 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -5833,20 +5833,8 @@ 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;
@@ -5934,8 +5922,6 @@ 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);
@@ -5963,7 +5949,6 @@ 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);
--
2.38.1.431.g37b22c650d-goog
Powered by blists - more mailing lists