[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 4/8] xen/vmap: allow vm_init_type to be called during early_boot
From: Wei Liu <wei.liu2@xxxxxxxxxx> We want to move vm_init, which calls vm_init_type under the hood, to early boot stage. Add a path to get page from boot allocator instead. Add an emacs block to that file while I was there. Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx> --- xen/common/vmap.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff --git a/xen/common/vmap.c b/xen/common/vmap.c index faebc1ddf1..37922f735b 100644 --- a/xen/common/vmap.c +++ b/xen/common/vmap.c @@ -34,9 +34,15 @@ void __init vm_init_type(enum vmap_region type, void *start, void *end) for ( i = 0, va = (unsigned long)vm_bitmap(type); i < nr; ++i, va += PAGE_SIZE ) { - struct page_info *pg = alloc_domheap_page(NULL, 0); - - map_pages_to_xen(va, page_to_mfn(pg), 1, PAGE_HYPERVISOR); + mfn_t mfn; + int rc; + + if ( system_state == SYS_STATE_early_boot ) + mfn = alloc_boot_pages(1, 1); + else + mfn = page_to_mfn(alloc_domheap_page(NULL, 0)); + rc = map_pages_to_xen(va, mfn, 1, PAGE_HYPERVISOR); + BUG_ON(rc); clear_page((void *)va); } bitmap_fill(vm_bitmap(type), vm_low[type]); @@ -330,3 +336,13 @@ void vfree(void *va) free_domheap_page(pg); } #endif + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * tab-width: 4 + * indent-tabs-mode: nil + * End: + */ -- 2.21.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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