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-rw-r--r--drivers/acpi/apei/ghes.c30
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index f0a704aed040..ee9206d5e119 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -170,40 +170,40 @@ static int ghes_estatus_pool_init(void)
return 0;
}
-static void ghes_estatus_pool_free_chunk_page(struct gen_pool *pool,
+static void ghes_estatus_pool_free_chunk(struct gen_pool *pool,
struct gen_pool_chunk *chunk,
void *data)
{
- free_page(chunk->start_addr);
+ vfree((void *)chunk->start_addr);
}
static void ghes_estatus_pool_exit(void)
{
gen_pool_for_each_chunk(ghes_estatus_pool,
- ghes_estatus_pool_free_chunk_page, NULL);
+ ghes_estatus_pool_free_chunk, NULL);
gen_pool_destroy(ghes_estatus_pool);
}
static int ghes_estatus_pool_expand(unsigned long len)
{
- unsigned long i, pages, size, addr;
- int ret;
+ unsigned long size, addr;
ghes_estatus_pool_size_request += PAGE_ALIGN(len);
size = gen_pool_size(ghes_estatus_pool);
if (size >= ghes_estatus_pool_size_request)
return 0;
- pages = (ghes_estatus_pool_size_request - size) / PAGE_SIZE;
- for (i = 0; i < pages; i++) {
- addr = __get_free_page(GFP_KERNEL);
- if (!addr)
- return -ENOMEM;
- ret = gen_pool_add(ghes_estatus_pool, addr, PAGE_SIZE, -1);
- if (ret)
- return ret;
- }
- return 0;
+ addr = (unsigned long)vmalloc(PAGE_ALIGN(len));
+ if (!addr)
+ return -ENOMEM;
+
+ /*
+ * New allocation must be visible in all pgd before it can be found by
+ * an NMI allocating from the pool.
+ */
+ vmalloc_sync_all();
+
+ return gen_pool_add(ghes_estatus_pool, addr, PAGE_ALIGN(len), -1);
}
static int map_gen_v2(struct ghes *ghes)