decui_microsoft.com updated the summary for this revision.
decui_microsoft.com updated this revision to Diff 26023.
CHANGES SINCE LAST UPDATE
https://reviews.freebsd.org/D9904?vs=26020&id=26023
REVISION DETAIL
https://reviews.freebsd.org/D9904
AFFECTED FILES
sys/boot/efi/loader/copy.c
EMAIL PREFERENCES
https://reviews.freebsd.org/settings/panel/emailpreferences/
To: decui_microsoft.com, imp, jhb, will, kib, delphij, emaste, marcel,
sepherosa_gmail.com, honzhan_microsoft.com, howard0su_gmail.com, tsoome, gonzo,
manu, andrew, sbruno, ambrisko, allanjude, bapt, cem, smh, ian
Cc: freebsd-virtualization-list
diff --git a/sys/boot/efi/loader/copy.c b/sys/boot/efi/loader/copy.c
--- a/sys/boot/efi/loader/copy.c
+++ b/sys/boot/efi/loader/copy.c
@@ -53,7 +53,7 @@
UINT32 dver;
EFI_STATUS status;
int i, ndesc;
- unsigned long available_pages;
+ unsigned long available_pages = 0;
sz = 0;
status = BS->GetMemoryMap(&sz, 0, &key, &dsz, &dver);
@@ -70,7 +70,6 @@
}
ndesc = sz / dsz;
-
for (i = 0, p = map; i < ndesc;
i++, p = NextMemoryDescriptor(p, dsz)) {
start = p->PhysicalStart;
@@ -81,20 +80,38 @@
continue;
if (p->Type != EfiConventionalMemory)
- continue;
+ printf("Warning: wrong EFI memory type: %d\n",
+ p->Type);
available_pages = p->NumberOfPages -
((KERNEL_PHYSICAL_BASE - start) >> EFI_PAGE_SHIFT);
+ break;
+ }
+
+ if (available_pages == 0) {
+ printf("Can't find valid memory map for staging area!\n");
+ goto out;
+ }
- if (*nr_pages > available_pages) {
- printf("staging area size is reduced: %ld -> %ld!\n",
- *nr_pages, available_pages);
- *nr_pages = available_pages;
- }
+ for ( ; i < ndesc;
+ i++, p = NextMemoryDescriptor(p, dsz)) {
+ if (p->Type != EfiConventionalMemory &&
+ p->Type != EfiLoaderData)
+ break;
- break;
+ if (p->PhysicalStart != end)
+ break;
+
+ end = p->PhysicalStart + p->NumberOfPages * EFI_PAGE_SIZE;
+
+ available_pages += p->NumberOfPages;
}
+ if (*nr_pages > available_pages) {
+ printf("Staging area's size is reduced: %ld -> %ld!\n",
+ *nr_pages, available_pages);
+ *nr_pages = available_pages;
+ }
out:
free(map);
}
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