[PATCH v20 04/22] KVM: arm64: Avoid including linux/kvm_host.h in kvm_pgtable.h

From: Steven Price <steven.price@arm.com>

To avoid future include cycles, drop the linux/kvm_host.h include in
kvm_pgtable.h and include the lightweight headers required for the types
and inline helpers used there. Additionally provide a forward
declaration for struct kvm_s2_mmu as it's only used as a pointer in this
file.

Both pgtable.c and kvm_pkvm.h relied on the indirect inclusion of
kvm_host.h, so make that explicit.

Reviewed-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Gavin Shan <redacted>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
Changes since v19:
 - Include asm/memory.h, asm/page.h , linux/bitfield.h in asm/kvm_pgtable.h - Sashiko
---
 arch/arm64/include/asm/kvm_pgtable.h | 10 +++++++++-
 arch/arm64/include/asm/kvm_pkvm.h    |  2 +-
 arch/arm64/kvm/hyp/pgtable.c         |  1 +
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h
index 41a8687938eb6..a211a5d87bf96 100644
--- a/arch/arm64/include/asm/kvm_pgtable.h
+++ b/arch/arm64/include/asm/kvm_pgtable.h

@@ -7,10 +7,18 @@
 #ifndef __ARM64_KVM_PGTABLE_H__
 #define __ARM64_KVM_PGTABLE_H__
 
+#include <linux/bitfield.h>
 #include <linux/bits.h>
-#include <linux/kvm_host.h>
+#include <linux/kvm_types.h>
+#include <linux/rbtree_types.h>
+#include <linux/rcupdate.h>
 #include <linux/types.h>
 
+#include <asm/memory.h>
+#include <asm/page.h>
+
+struct kvm_s2_mmu;
+
 #define KVM_PGTABLE_FIRST_LEVEL		-1
 #define KVM_PGTABLE_LAST_LEVEL		3
 

diff --git a/arch/arm64/include/asm/kvm_pkvm.h b/arch/arm64/include/asm/kvm_pkvm.h
index beea00e693a0a..54a618d887fa4 100644
--- a/arch/arm64/include/asm/kvm_pkvm.h
+++ b/arch/arm64/include/asm/kvm_pkvm.h

@@ -7,9 +7,9 @@
 #define __ARM64_KVM_PKVM_H__
 
 #include <linux/arm_ffa.h>
+#include <linux/kvm_host.h>
 #include <linux/memblock.h>
 #include <linux/scatterlist.h>
-#include <asm/kvm_host.h>
 #include <asm/kvm_pgtable.h>
 
 /* Maximum number of VMs that can co-exist under pKVM. */

diff --git a/arch/arm64/kvm/hyp/pgtable.c b/arch/arm64/kvm/hyp/pgtable.c
index b74dd5ce1efd3..f48253b9d88b5 100644
--- a/arch/arm64/kvm/hyp/pgtable.c
+++ b/arch/arm64/kvm/hyp/pgtable.c

@@ -8,6 +8,7 @@
  */
 
 #include <linux/bitfield.h>
+#include <linux/kvm_host.h>
 #include <asm/kvm_pgtable.h>
 #include <asm/stage2_pgtable.h>
 

-- 
2.43.0