From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 2 Jan 2024 18:16:29 +0000 (-0500)
Subject: Merge tag 'loongarch-kvm-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhu... 
X-Git-Tag: v6.8-rc1~78^2~15
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=136292522e43da46bee4c0fef80b2602f79525a2;p=thirdparty%2Flinux.git

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.
---

136292522e43da46bee4c0fef80b2602f79525a2
diff --cc include/linux/pagemap.h
index bf2965b01b357,06142ff7f9ce0..2df35e65557d2
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@@ -203,8 -203,9 +203,10 @@@ enum mapping_flags 
  	/* writeback related tags are not used */
  	AS_NO_WRITEBACK_TAGS = 5,
  	AS_LARGE_FOLIO_SUPPORT = 6,
- 	AS_RELEASE_ALWAYS = 7,	/* Call ->release_folio(), even if no private data */
- 	AS_UNMOVABLE	= 8,	/* The mapping cannot be moved, ever */
+ 	AS_RELEASE_ALWAYS,	/* Call ->release_folio(), even if no private data */
+ 	AS_STABLE_WRITES,	/* must wait for writeback before modifying
+ 				   folio contents */
++	AS_UNMOVABLE,		/* The mapping cannot be moved, ever */
  };
  
  /**
@@@ -290,22 -291,21 +292,37 @@@ static inline void mapping_clear_releas
  	clear_bit(AS_RELEASE_ALWAYS, &mapping->flags);
  }
  
+ static inline bool mapping_stable_writes(const struct address_space *mapping)
+ {
+ 	return test_bit(AS_STABLE_WRITES, &mapping->flags);
+ }
+ 
+ static inline void mapping_set_stable_writes(struct address_space *mapping)
+ {
+ 	set_bit(AS_STABLE_WRITES, &mapping->flags);
+ }
+ 
+ static inline void mapping_clear_stable_writes(struct address_space *mapping)
+ {
+ 	clear_bit(AS_STABLE_WRITES, &mapping->flags);
+ }
+ 
 +static inline void mapping_set_unmovable(struct address_space *mapping)
 +{
 +	/*
 +	 * It's expected unmovable mappings are also unevictable. Compaction
 +	 * migrate scanner (isolate_migratepages_block()) relies on this to
 +	 * reduce page locking.
 +	 */
 +	set_bit(AS_UNEVICTABLE, &mapping->flags);
 +	set_bit(AS_UNMOVABLE, &mapping->flags);
 +}
 +
 +static inline bool mapping_unmovable(struct address_space *mapping)
 +{
 +	return test_bit(AS_UNMOVABLE, &mapping->flags);
 +}
 +
  static inline gfp_t mapping_gfp_mask(struct address_space * mapping)
  {
  	return mapping->gfp_mask;