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Re: [PATCH v2 4/8] xen/riscv: setup fixmap mapping
On 23/07/2024 14:27, oleksii.kurochko@xxxxxxxxx wrote:
Hello Julien,
Hi Oleksii,
On Sun, 2024-07-21 at 09:46 +0100, Julien Grall wrote:
diff --git a/xen/arch/riscv/mm.c b/xen/arch/riscv/mm.c
index 7d09e781bf..d69a174b5d 100644
--- a/xen/arch/riscv/mm.c
+++ b/xen/arch/riscv/mm.c
@@ -49,6 +49,9 @@ stage1_pgtbl_root[PAGETABLE_ENTRIES];
pte_t __section(".bss.page_aligned") __aligned(PAGE_SIZE)
stage1_pgtbl_nonroot[PGTBL_INITIAL_COUNT * PAGETABLE_ENTRIES];
+pte_t __section(".bss.page_aligned") __aligned(PAGE_SIZE)
+xen_fixmap[PAGETABLE_ENTRIES];
Can you add a BUILD_BUG_ON() to check that the number of entries in
the
fixmap will never be above PAGETABLE_ENTRIES?
I just realized that we don't have the information about how many
entries has been used. Am I confusing something?
I think we do. It is FIX_LAST.
Cheers,
--
Julien Grall
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