On 27/12/2018 15:56, Roger Pau Monne wrote:
> This function is based on the Linux e820__range_remove function,
> modified to fit Xen coding style.
>
> Signed-off-by: Roger Pau Monné <roger....@citrix.com>
> ---
> ---
> xen/arch/x86/e820.c | 56 ++++++++++++++++++++++++++++++++++++++
> xen/include/asm-x86/e820.h | 2 ++
> 2 files changed, 58 insertions(+)
>
> diff --git a/xen/arch/x86/e820.c b/xen/arch/x86/e820.c
> index 590ea985ef..2b03c56b93 100644
> --- a/xen/arch/x86/e820.c
> +++ b/xen/arch/x86/e820.c
> @@ -599,6 +599,62 @@ int __init e820_add_range(
> return 1;
> }
>
> +uint64_t __init e820_remove_range(struct e820map *e820, uint64_t start,
> + uint64_t end, uint32_t type, bool
> check_type)
> +{
> + unsigned int i;
> + uint64_t real_removed_size = 0;
> +
> + ASSERT(end > start);
> +
> + for ( i = 0; i < e820->nr_map; i++ )
> + {
> + struct e820entry *entry = &e820->map[i];
> + uint64_t final_start, final_end, entry_end;
> +
> + if ( check_type && entry->type != type )
> + continue;
> +
> + entry_end = entry->addr + entry->size;
> +
> + /* Completely covered? */
> + if ( entry->addr >= start && entry_end <= end )
> + {
> + real_removed_size += entry->size;
> + memset(entry, 0, sizeof(*entry));
> + continue;
> + }
> +
> + /* Is the new range completely covered? */
> + if (entry->addr < start && entry_end > end) {
One remaining piece of Linux style. Can be fixed on commit.
Acked-by: Andrew Cooper <andrew.coop...@citrix.com>
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