Date: Thu, 17 Jun 2021 14:12:32 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 0247c33e89ad - main - amd64 efirt: initialize vm_pages backing EFI runtime memory Message-ID: <202106171412.15HECWJ0056914@gitrepo.freebsd.org>
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The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=0247c33e89adaf0c7159b847ef7bae9566e55395 commit 0247c33e89adaf0c7159b847ef7bae9566e55395 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-06-16 01:59:06 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-06-17 13:58:51 +0000 amd64 efirt: initialize vm_pages backing EFI runtime memory so that PHYS_TO_VM_PAGE() and consequently physcopyin() work for them Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D30785 --- sys/amd64/amd64/efirt_machdep.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/sys/amd64/amd64/efirt_machdep.c b/sys/amd64/amd64/efirt_machdep.c index 3c8392bee86f..6fb64816385e 100644 --- a/sys/amd64/amd64/efirt_machdep.c +++ b/sys/amd64/amd64/efirt_machdep.c @@ -180,6 +180,7 @@ efi_create_1t1_map(struct efi_md *map, int ndesc, int descsz) struct efi_md *p; pt_entry_t *pte; void *pml; + vm_page_t m; vm_offset_t va; uint64_t idx; int bits, i, mode; @@ -247,6 +248,14 @@ efi_create_1t1_map(struct efi_md *map, int ndesc, int descsz) va += PAGE_SIZE) { pte = efi_1t1_pte(va); pte_store(pte, va | bits); + + m = PHYS_TO_VM_PAGE(va); + if (m != NULL && VM_PAGE_TO_PHYS(m) == 0) { + vm_page_init_page(m, va, -1); + m->order = VM_NFREEORDER + 1; /* invalid */ + m->pool = VM_NFREEPOOL + 1; /* invalid */ + pmap_page_set_memattr(m, mode); + } } VM_OBJECT_WUNLOCK(obj_1t1_pt); }
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