4 files changed, 28 insertions, 9 deletions
diff --git a/arch/loongarch/include/asm/acenv.h b/arch/loongarch/include/asm/acenv.h
index 52f298f7293b..483c955f2ae5 100644
--- a/arch/loongarch/include/asm/acenv.h
+++ b/arch/loongarch/include/asm/acenv.h
@@ -10,9 +10,8 @@
 #ifndef _ASM_LOONGARCH_ACENV_H
 #define _ASM_LOONGARCH_ACENV_H
 
-/*
- * This header is required by ACPI core, but we have nothing to fill in
- * right now. Will be updated later when needed.
- */
+#ifdef CONFIG_ARCH_STRICT_ALIGN
+#define ACPI_MISALIGNMENT_NOT_SUPPORTED
+#endif /* CONFIG_ARCH_STRICT_ALIGN */
 
 #endif /* _ASM_LOONGARCH_ACENV_H */
diff --git a/arch/loongarch/include/asm/kvm_mmu.h b/arch/loongarch/include/asm/kvm_mmu.h
index 099bafc6f797..e36cc7e8ed20 100644
--- a/arch/loongarch/include/asm/kvm_mmu.h
+++ b/arch/loongarch/include/asm/kvm_mmu.h
@@ -16,6 +16,13 @@
  */
 #define KVM_MMU_CACHE_MIN_PAGES	(CONFIG_PGTABLE_LEVELS - 1)
 
+/*
+ * _PAGE_MODIFIED is a SW pte bit, it records page ever written on host
+ * kernel, on secondary MMU it records the page writeable attribute, in
+ * order for fast path handling.
+ */
+#define KVM_PAGE_WRITEABLE	_PAGE_MODIFIED
+
 #define _KVM_FLUSH_PGTABLE	0x1
 #define _KVM_HAS_PGMASK		0x2
 #define kvm_pfn_pte(pfn, prot)	(((pfn) << PFN_PTE_SHIFT) | pgprot_val(prot))
@@ -52,10 +59,10 @@ static inline void kvm_set_pte(kvm_pte_t *ptep, kvm_pte_t val)
 	WRITE_ONCE(*ptep, val);
 }
 
-static inline int kvm_pte_write(kvm_pte_t pte) { return pte & _PAGE_WRITE; }
-static inline int kvm_pte_dirty(kvm_pte_t pte) { return pte & _PAGE_DIRTY; }
 static inline int kvm_pte_young(kvm_pte_t pte) { return pte & _PAGE_ACCESSED; }
 static inline int kvm_pte_huge(kvm_pte_t pte) { return pte & _PAGE_HUGE; }
+static inline int kvm_pte_dirty(kvm_pte_t pte) { return pte & __WRITEABLE; }
+static inline int kvm_pte_writeable(kvm_pte_t pte) { return pte & KVM_PAGE_WRITEABLE; }
 
 static inline kvm_pte_t kvm_pte_mkyoung(kvm_pte_t pte)
 {
@@ -69,12 +76,12 @@ static inline kvm_pte_t kvm_pte_mkold(kvm_pte_t pte)
 
 static inline kvm_pte_t kvm_pte_mkdirty(kvm_pte_t pte)
 {
-	return pte | _PAGE_DIRTY;
+	return pte | __WRITEABLE;
 }
 
 static inline kvm_pte_t kvm_pte_mkclean(kvm_pte_t pte)
 {
-	return pte & ~_PAGE_DIRTY;
+	return pte & ~__WRITEABLE;
 }
 
 static inline kvm_pte_t kvm_pte_mkhuge(kvm_pte_t pte)
@@ -87,6 +94,11 @@ static inline kvm_pte_t kvm_pte_mksmall(kvm_pte_t pte)
 	return pte & ~_PAGE_HUGE;
 }
 
+static inline kvm_pte_t kvm_pte_mkwriteable(kvm_pte_t pte)
+{
+	return pte | KVM_PAGE_WRITEABLE;
+}
+
 static inline int kvm_need_flush(kvm_ptw_ctx *ctx)
 {
 	return ctx->flag & _KVM_FLUSH_PGTABLE;
diff --git a/arch/loongarch/include/asm/stackframe.h b/arch/loongarch/include/asm/stackframe.h
index 3eda298702b1..5cb568a60cf8 100644
--- a/arch/loongarch/include/asm/stackframe.h
+++ b/arch/loongarch/include/asm/stackframe.h
@@ -58,7 +58,7 @@
 	.endm
 
 	.macro STACKLEAK_ERASE
-#ifdef CONFIG_GCC_PLUGIN_STACKLEAK
+#ifdef CONFIG_KSTACK_ERASE
 	bl	stackleak_erase_on_task_stack
 #endif
 	.endm
diff --git a/arch/loongarch/include/uapi/asm/setup.h b/arch/loongarch/include/uapi/asm/setup.h
new file mode 100644
index 000000000000..d46363ce3e02
--- /dev/null
+++ b/arch/loongarch/include/uapi/asm/setup.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+
+#ifndef _UAPI_ASM_LOONGARCH_SETUP_H
+#define _UAPI_ASM_LOONGARCH_SETUP_H
+
+#define COMMAND_LINE_SIZE	4096
+
+#endif /* _UAPI_ASM_LOONGARCH_SETUP_H */