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From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org,
kvm@vger.kernel.org
Cc: roy.hopkins@suse.com,
seanjc@google.com,
thomas.lendacky@amd.com,
ashish.kalra@amd.com,
michael.roth@amd.com,
jroedel@suse.de,
nsaenz@amazon.com,
anelkz@amazon.de,
James.Bottomley@HansenPartnership.com
Subject: [PATCH 04/29] KVM: introduce struct kvm_arch_plane
Date: Tue, 1 Apr 2025 18:10:41 +0200
Message-ID: <20250401161106.790710-5-pbonzini@redhat.com>
X-Mailer: git-send-email 2.49.0
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/arm64/include/asm/kvm_host.h | 5 +++++
arch/loongarch/include/asm/kvm_host.h | 5 +++++
arch/mips/include/asm/kvm_host.h | 5 +++++
arch/powerpc/include/asm/kvm_host.h | 5 +++++
arch/riscv/include/asm/kvm_host.h | 5 +++++
arch/s390/include/asm/kvm_host.h | 5 +++++
arch/x86/include/asm/kvm_host.h | 6 ++++++
include/linux/kvm_host.h | 2 ++
virt/kvm/kvm_main.c | 3 +++
9 files changed, 41 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm=
_host.h
index d919557af5e5..b742275cda4d 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -227,6 +227,9 @@ struct kvm_s2_mmu {
struct kvm_arch_memory_slot {
};
=20
+struct kvm_arch_plane {
+};
+
/**
* struct kvm_smccc_features: Descriptor of the hypercall services exposed=
to the guests
*
@@ -1334,6 +1337,8 @@ static inline bool kvm_system_needs_idmapped_vectors(=
void)
return cpus_have_final_cap(ARM64_SPECTRE_V3A);
}
=20
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
=20
void kvm_init_host_debug_data(void);
diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include=
/asm/kvm_host.h
index 2281293a5f59..24c1dafac855 100644
--- a/arch/loongarch/include/asm/kvm_host.h
+++ b/arch/loongarch/include/asm/kvm_host.h
@@ -73,6 +73,9 @@ struct kvm_arch_memory_slot {
unsigned long flags;
};
=20
+struct kvm_arch_plane {
+};
+
#define HOST_MAX_PMNUM 16
struct kvm_context {
unsigned long vpid_cache;
@@ -325,6 +328,8 @@ static inline bool kvm_is_ifetch_fault(struct kvm_vcpu_=
arch *arch)
}
=20
/* Misc */
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
static inline void kvm_arch_hardware_unsetup(void) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen) {}
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_h=
ost.h
index f7222eb594ea..d7be72c529b3 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -147,6 +147,9 @@ struct kvm_vcpu_stat {
struct kvm_arch_memory_slot {
};
=20
+struct kvm_arch_plane {
+};
+
#ifdef CONFIG_CPU_LOONGSON64
struct ipi_state {
uint32_t status;
@@ -886,6 +889,8 @@ extern unsigned long kvm_mips_get_ramsize(struct kvm *k=
vm);
extern int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
struct kvm_mips_interrupt *irq);
=20
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_free_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot) {}
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm=
/kvm_host.h
index 6e1108f8fce6..6023f0fd637b 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -256,6 +256,9 @@ struct kvm_arch_memory_slot {
#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
};
=20
+struct kvm_arch_plane {
+};
+
struct kvm_hpt_info {
/* Host virtual (linear mapping) address of guest HPT */
unsigned long virt;
@@ -902,6 +905,8 @@ struct kvm_vcpu_arch {
#define __KVM_HAVE_ARCH_WQP
#define __KVM_HAVE_CREATE_DEVICE
=20
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
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) {}
diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm=
_host.h
index cc33e35cd628..72f862194a0c 100644
--- a/arch/riscv/include/asm/kvm_host.h
+++ b/arch/riscv/include/asm/kvm_host.h
@@ -97,6 +97,9 @@ struct kvm_vcpu_stat {
struct kvm_arch_memory_slot {
};
=20
+struct kvm_arch_plane {
+};
+
struct kvm_vmid {
/*
* Writes to vmid_version and vmid happen with vmid_lock held
@@ -301,6 +304,8 @@ static inline bool kvm_arch_pmi_in_guest(struct kvm_vcp=
u *vcpu)
return IS_ENABLED(CONFIG_GUEST_PERF_EVENTS) && !!vcpu;
}
=20
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
=20
#define KVM_RISCV_GSTAGE_TLB_MIN_ORDER 12
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_h=
ost.h
index 9a367866cab0..63b79ce5c8ac 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -799,6 +799,9 @@ struct kvm_vm_stat {
struct kvm_arch_memory_slot {
};
=20
+struct kvm_arch_plane {
+};
+
struct s390_map_info {
struct list_head list;
__u64 guest_addr;
@@ -1056,6 +1059,8 @@ bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vc=
pu);
extern int kvm_s390_gisc_register(struct kvm *kvm, u32 gisc);
extern int kvm_s390_gisc_unregister(struct kvm *kvm, u32 gisc);
=20
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
static inline void kvm_arch_sync_events(struct kvm *kvm) {}
static inline void kvm_arch_free_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot) {}
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_hos=
t.h
index 383b736cc6f1..8240f565a764 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1086,6 +1086,9 @@ struct kvm_arch_memory_slot {
unsigned short *gfn_write_track;
};
=20
+struct kvm_arch_plane {
+};
+
/*
* Track the mode of the optimized logical map, as the rules for decoding =
the
* destination vary per mode. Enabling the optimized logical map requires=
all
@@ -2357,6 +2360,9 @@ void kvm_make_scan_ioapic_request(struct kvm *kvm);
void kvm_make_scan_ioapic_request_mask(struct kvm *kvm,
unsigned long *vcpu_bitmap);
=20
+static inline void kvm_arch_init_plane(struct kvm_plane *plane) {}
+static inline void kvm_arch_free_plane(struct kvm_plane *plane) {}
+
bool kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
struct kvm_async_pf *work);
void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 0e16c34080ef..6bd9b0b3cbee 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -763,6 +763,8 @@ struct kvm_memslots {
struct kvm_plane {
struct kvm *kvm;
int plane;
+
+ struct kvm_arch_plane arch;
};
=20
struct kvm {
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 67773b6b9576..e83db27580da 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1104,6 +1104,8 @@ static struct kvm_plane *kvm_create_vm_plane(struct k=
vm *kvm, unsigned plane_id)
=20
plane->kvm =3D kvm;
plane->plane =3D plane_id;
+
+ kvm_arch_init_plane(plane);
return plane;
}
=20
@@ -1277,6 +1279,7 @@ static void kvm_destroy_devices(struct kvm *kvm)
=20
static void kvm_destroy_plane(struct kvm_plane *plane)
{
+ kvm_arch_free_plane(plane);
}
=20
static void kvm_destroy_vm(struct kvm *kvm)
--=20
2.49.0