Re: [Qemu-devel] [PATCH 08/10] migration: s/uint64_t/int64_t the definitions of it_age

[Juan Quintela <quintela@redhat.com>]

<arei.gonglei@huawei.com> wrote:
> From: ChenLiang <chenliang88@huawei.com>
>
> Signed-off-by: ChenLiang <chenliang88@huawei.com>
> Signed-off-by: Gonglei <arei.gonglei@huawei.com>


You are changing teh types introduced in patch2, please fix them there?
Anyways, why are you changing the age to int64_t?  Not that I expect it
to be so big, but I would expect it not to be negative?

Later, Juan.

> ---
>  arch_init.c                    | 4 ++--
>  include/migration/page_cache.h | 4 ++--
>  page_cache.c                   | 6 +++---
>  3 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/arch_init.c b/arch_init.c
> index 461a10a..1c1488a 100644
> --- a/arch_init.c
> +++ b/arch_init.c
> @@ -109,7 +109,7 @@ const uint32_t arch_type = QEMU_ARCH;
>  static bool mig_throttle_on;
>  static void check_guest_throttling(void);
>  
> -static uint64_t bitmap_sync_cnt;
> +static int64_t bitmap_sync_cnt;
>  /* the functions *_bitmap_sync_cnt only run in migrate thread */
>  static inline void reset_bitmap_sync_cnt(void)
>  {
> @@ -121,7 +121,7 @@ static inline void increase_bitmap_sync_cnt(void)
>      bitmap_sync_cnt++;
>  }
>  
> -static inline uint64_t get_bitmap_sync_cnt(void)
> +static inline int64_t get_bitmap_sync_cnt(void)
>  {
>      return bitmap_sync_cnt;
>  }
> diff --git a/include/migration/page_cache.h b/include/migration/page_cache.h
> index dc0c6b5..34518ba 100644
> --- a/include/migration/page_cache.h
> +++ b/include/migration/page_cache.h
> @@ -46,7 +46,7 @@ void cache_fini(PageCache *cache);
>   * @current_age indicate the age of the page if cache hit
>   */
>  bool cache_is_cached(const PageCache *cache, uint64_t addr,
> -                     uint64_t current_age);
> +                     int64_t current_age);
>  
>  /**
>   * get_cached_data: Get the data cached for an addr
> @@ -70,7 +70,7 @@ uint8_t *get_cached_data(const PageCache *cache, uint64_t addr);
>   * @current_age indicate the age of the page if the page is inserted into cache
>   */
>  int cache_insert(PageCache *cache, uint64_t addr, const uint8_t *pdata,
> -                 uint64_t current_age);
> +                 int64_t current_age);
>  
>  /**
>   * cache_resize: resize the page cache. In case of size reduction the extra
> diff --git a/page_cache.c b/page_cache.c
> index 579330c..b32afdc 100644
> --- a/page_cache.c
> +++ b/page_cache.c
> @@ -40,7 +40,7 @@ typedef struct CacheItem CacheItem;
>  
>  struct CacheItem {
>      uint64_t it_addr;
> -    uint64_t it_age;
> +    int64_t it_age;
>      uint8_t *it_data;
>  };
>  
> @@ -140,7 +140,7 @@ uint8_t *get_cached_data(const PageCache *cache, uint64_t addr)
>  }
>  
>  bool cache_is_cached(const PageCache *cache, uint64_t addr,
> -                     uint64_t current_age)
> +                     int64_t current_age)
>  {
>      CacheItem *it = NULL;
>  
> @@ -155,7 +155,7 @@ bool cache_is_cached(const PageCache *cache, uint64_t addr,
>  }
>  
>  int cache_insert(PageCache *cache, uint64_t addr, const uint8_t *pdata,
> -                 uint64_t current_age)
> +                 int64_t current_age)
>  {
>  
>      CacheItem *it = NULL;