[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 3/4] xen/arm: p2m: Introduce a helper to remove an entry in the page table
Factorize the code to remove an entry in p2m_remove_pte so we can re-use it later. Signed-off-by: Julien Grall <julien.grall@xxxxxxxxxx> Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx> --- Changes in v2: - Add Ian's acked-by - Fix typoes --- xen/arch/arm/p2m.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c index f28ae3f..ae0acf0 100644 --- a/xen/arch/arm/p2m.c +++ b/xen/arch/arm/p2m.c @@ -367,6 +367,14 @@ static inline void p2m_write_pte(lpae_t *p, lpae_t pte, bool_t flush_cache) clean_dcache(*p); } +static inline void p2m_remove_pte(lpae_t *p, bool_t flush_cache) +{ + lpae_t pte; + + memset(&pte, 0x00, sizeof(pte)); + p2m_write_pte(p, pte, flush_cache); +} + /* * Allocate a new page table page and hook it in via the given entry. * apply_one_level relies on this returning 0 on success @@ -839,8 +847,7 @@ static int apply_one_level(struct domain *d, *flush = true; - memset(&pte, 0x00, sizeof(pte)); - p2m_write_pte(entry, pte, flush_cache); + p2m_remove_pte(entry, flush_cache); p2m_mem_access_radix_set(p2m, paddr_to_pfn(*addr), p2m_access_rwx); *addr += level_size; -- 2.1.4 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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