Merge tag 'loongarch-kvm-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD

LoongArch KVM changes for v6.8

1. Optimization for memslot hugepage checking.
2. Cleanup and fix some HW/SW timer issues.
3. Add LSX/LASX (128bit/256bit SIMD) support.

2 files changed, 21 insertions, 2 deletions

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index b19a8aee684c..79ce70fbb751 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -834,6 +834,12 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 		pte = set_pte_bit(pte, __pgprot(PTE_DIRTY));
 
 	pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
+	/*
+	 * If we end up clearing hw dirtiness for a sw-dirty PTE, set hardware
+	 * dirtiness again.
+	 */
+	if (pte_sw_dirty(pte))
+		pte = pte_mkdirty(pte);
 	return pte;
 }
 
diff --git a/arch/arm64/include/asm/setup.h b/arch/arm64/include/asm/setup.h
index f4af547ef54c..2e4d7da74fb8 100644
--- a/arch/arm64/include/asm/setup.h
+++ b/arch/arm64/include/asm/setup.h
@@ -21,9 +21,22 @@ static inline bool arch_parse_debug_rodata(char *arg)
 	extern bool rodata_enabled;
 	extern bool rodata_full;
 
-	if (arg && !strcmp(arg, "full")) {
+	if (!arg)
+		return false;
+
+	if (!strcmp(arg, "full")) {
+		rodata_enabled = rodata_full = true;
+		return true;
+	}
+
+	if (!strcmp(arg, "off")) {
+		rodata_enabled = rodata_full = false;
+		return true;
+	}
+
+	if (!strcmp(arg, "on")) {
 		rodata_enabled = true;
-		rodata_full = true;
+		rodata_full = false;
 		return true;
 	}