The branch main has been updated by kib:
URL:
https://cgit.FreeBSD.org/src/commit/?id=0247c33e89adaf0c7159b847ef7bae9566e55395
commit 0247c33e89adaf0c7159b847ef7bae9566e55395
Author: Konstantin Belousov <k...@freebsd.org>
AuthorDate: 2021-06-16 01:59:06 +0000
Commit: Konstantin Belousov <k...@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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