Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

[~andy/linux] / arch / powerpc / platforms / powernv / opal-flash.c

diff --git a/arch/powerpc/platforms/powernv/opal-flash.c b/arch/powerpc/platforms/powernv/opal-flash.c
index d8773079ce195afd380a6fa97c5fc5809a976a78..714ef972406bcacf66a4a896283c6fb25963ca16 100644 (file)
--- a/arch/powerpc/platforms/powernv/opal-flash.c
+++ b/arch/powerpc/platforms/powernv/opal-flash.c
@@ -76,8 +76,8 @@
 /* Validate buffer size */
 #define VALIDATE_BUF_SIZE      4096
 
-/* XXX: Assume candidate image size is <= 256MB */
-#define MAX_IMAGE_SIZE 0x10000000
+/* XXX: Assume candidate image size is <= 1GB */
+#define MAX_IMAGE_SIZE 0x40000000
 
 /* Flash sg list version */
 #define SG_LIST_VERSION (1UL)
@@ -103,27 +103,6 @@ struct image_header_t {
        uint32_t        size;
 };
 
-/* Scatter/gather entry */
-struct opal_sg_entry {
-       void    *data;
-       long    length;
-};
-
-/* We calculate number of entries based on PAGE_SIZE */
-#define SG_ENTRIES_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct opal_sg_entry))
-
-/*
- * This struct is very similar but not identical to that
- * needed by the opal flash update. All we need to do for
- * opal is rewrite num_entries into a version/length and
- * translate the pointers to absolute.
- */
-struct opal_sg_list {
-       unsigned long num_entries;
-       struct opal_sg_list *next;
-       struct opal_sg_entry entry[SG_ENTRIES_PER_NODE];
-};
-
 struct validate_flash_t {
        int             status;         /* Return status */
        void            *buf;           /* Candidate image buffer */
@@ -333,7 +312,7 @@ static struct opal_sg_list *image_data_to_sglist(void)
        addr = image_data.data;
        size = image_data.size;
 
-       sg1 = kzalloc((sizeof(struct opal_sg_list)), GFP_KERNEL);
+       sg1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
        if (!sg1)
                return NULL;
 
@@ -351,8 +330,7 @@ static struct opal_sg_list *image_data_to_sglist(void)
 
                sg1->num_entries++;
                if (sg1->num_entries >= SG_ENTRIES_PER_NODE) {
-                       sg1->next = kzalloc((sizeof(struct opal_sg_list)),
-                                           GFP_KERNEL);
+                       sg1->next = kzalloc(PAGE_SIZE, GFP_KERNEL);
                        if (!sg1->next) {
                                pr_err("%s : Failed to allocate memory\n",
                                       __func__);
@@ -402,7 +380,10 @@ static int opal_flash_update(int op)
                else
                        sg->next = NULL;
 
-               /* Make num_entries into the version/length field */
+               /*
+                * Convert num_entries to version/length format
+                * to satisfy OPAL.
+                */
                sg->num_entries = (SG_LIST_VERSION << 56) |
                        (sg->num_entries * sizeof(struct opal_sg_entry) + 16);
        }