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iommu/io-pgtable-fast: cache clean the last level ptes

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While preparing page tables for fastmap, last level ptes
are not being cache cleaned. Fix this.

Change-Id: I97f894b52484d0d223b15090b94c186bba9af734
Signed-off-by: Shiraz Hashim <shashim@codeaurora.org>
This commit is contained in:
Shiraz Hashim 2017-03-01 14:40:16 +05:30
parent 2e87440c3e
commit 847210ab6b
1 changed files with 5 additions and 0 deletions
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5
drivers/iommu/io-pgtable-fast.c
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@ -426,11 +426,16 @@ av8l_fast_prepopulate_pgtables(struct av8l_fast_io_pgtable *data,
for (j = pmd_index(pud), pmd = pud; pmd < pud_next(pud, end);
++j, pmd = pmd_next(pmd, end)) {
av8l_fast_iopte pte, *pudp;
void *addr;
page = alloc_page(GFP_KERNEL | __GFP_ZERO);
if (!page)
goto err_free_pages;
pages[pg++] = page;
addr = page_address(page);
dmac_clean_range(addr, addr + SZ_4K);
pte = page_to_phys(page) | AV8L_FAST_PTE_TYPE_TABLE;
pudp = data->puds[i] + j;
*pudp = pte;