kvm: x86: annotate RCU pointers

This patch adds the annotation to fix the following sparse errors:
arch/x86/kvm//x86.c:8147:15: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//x86.c:8147:15:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//x86.c:8147:15:    struct kvm_apic_map *
arch/x86/kvm//x86.c:10628:16: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//x86.c:10628:16:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//x86.c:10628:16:    struct kvm_apic_map *
arch/x86/kvm//x86.c:10629:15: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//x86.c:10629:15:    struct kvm_pmu_event_filter [noderef] __rcu *
arch/x86/kvm//x86.c:10629:15:    struct kvm_pmu_event_filter *
arch/x86/kvm//lapic.c:267:15: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//lapic.c:267:15:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//lapic.c:267:15:    struct kvm_apic_map *
arch/x86/kvm//lapic.c:269:9: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//lapic.c:269:9:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//lapic.c:269:9:    struct kvm_apic_map *
arch/x86/kvm//lapic.c:637:15: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//lapic.c:637:15:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//lapic.c:637:15:    struct kvm_apic_map *
arch/x86/kvm//lapic.c:994:15: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//lapic.c:994:15:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//lapic.c:994:15:    struct kvm_apic_map *
arch/x86/kvm//lapic.c:1036:15: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//lapic.c:1036:15:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//lapic.c:1036:15:    struct kvm_apic_map *
arch/x86/kvm//lapic.c:1173:15: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//lapic.c:1173:15:    struct kvm_apic_map [noderef] __rcu *
arch/x86/kvm//lapic.c:1173:15:    struct kvm_apic_map *
arch/x86/kvm//pmu.c:190:18: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//pmu.c:190:18:    struct kvm_pmu_event_filter [noderef] __rcu *
arch/x86/kvm//pmu.c:190:18:    struct kvm_pmu_event_filter *
arch/x86/kvm//pmu.c:251:18: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//pmu.c:251:18:    struct kvm_pmu_event_filter [noderef] __rcu *
arch/x86/kvm//pmu.c:251:18:    struct kvm_pmu_event_filter *
arch/x86/kvm//pmu.c:522:18: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//pmu.c:522:18:    struct kvm_pmu_event_filter [noderef] __rcu *
arch/x86/kvm//pmu.c:522:18:    struct kvm_pmu_event_filter *
arch/x86/kvm//pmu.c:522:18: error: incompatible types in comparison expression (different address spaces):
arch/x86/kvm//pmu.c:522:18:    struct kvm_pmu_event_filter [noderef] __rcu *
arch/x86/kvm//pmu.c:522:18:    struct kvm_pmu_event_filter *

Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
Message-Id: <20210305191123.GA497469@LEGION>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 877a402..9bc091e 100644 (file)
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -963,7 +963,7 @@ struct kvm_arch {
        struct kvm_pit *vpit;
        atomic_t vapics_in_nmi_mode;
        struct mutex apic_map_lock;
-       struct kvm_apic_map *apic_map;
+       struct kvm_apic_map __rcu *apic_map;
        atomic_t apic_map_dirty;
 
        bool apic_access_page_done;
@@ -1036,7 +1036,7 @@ struct kvm_arch {
 
        bool bus_lock_detection_enabled;
 
-       struct kvm_pmu_event_filter *pmu_event_filter;
+       struct kvm_pmu_event_filter __rcu *pmu_event_filter;
        struct task_struct *nx_lpage_recovery_thread;
 
 #ifdef CONFIG_X86_64