diff options
Diffstat (limited to 'drivers/misc/vmw_balloon.c')
| -rw-r--r-- | drivers/misc/vmw_balloon.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c index c4371ec132d3..f96dc3690ade 100644 --- a/drivers/misc/vmw_balloon.c +++ b/drivers/misc/vmw_balloon.c @@ -72,15 +72,26 @@ enum vmwballoon_capabilities { VMW_BALLOON_BATCHED_CMDS = (1 << 2), VMW_BALLOON_BATCHED_2M_CMDS = (1 << 3), VMW_BALLOON_SIGNALLED_WAKEUP_CMD = (1 << 4), + VMW_BALLOON_64_BIT_TARGET = (1 << 5) }; -#define VMW_BALLOON_CAPABILITIES (VMW_BALLOON_BASIC_CMDS \ +#define VMW_BALLOON_CAPABILITIES_COMMON (VMW_BALLOON_BASIC_CMDS \ | VMW_BALLOON_BATCHED_CMDS \ | VMW_BALLOON_BATCHED_2M_CMDS \ | VMW_BALLOON_SIGNALLED_WAKEUP_CMD) #define VMW_BALLOON_2M_ORDER (PMD_SHIFT - PAGE_SHIFT) +/* + * 64-bit targets are only supported in 64-bit + */ +#ifdef CONFIG_64BIT +#define VMW_BALLOON_CAPABILITIES (VMW_BALLOON_CAPABILITIES_COMMON \ + | VMW_BALLOON_64_BIT_TARGET) +#else +#define VMW_BALLOON_CAPABILITIES VMW_BALLOON_CAPABILITIES_COMMON +#endif + enum vmballoon_page_size_type { VMW_BALLOON_4K_PAGE, VMW_BALLOON_2M_PAGE, @@ -571,8 +582,9 @@ static int vmballoon_send_get_target(struct vmballoon *b) limit = totalram_pages(); - /* Ensure limit fits in 32-bits */ - if (limit != (u32)limit) + /* Ensure limit fits in 32-bits if 64-bit targets are not supported */ + if (!(b->capabilities & VMW_BALLOON_64_BIT_TARGET) && + limit != (u32)limit) return -EINVAL; status = vmballoon_cmd(b, VMW_BALLOON_CMD_GET_TARGET, limit, 0); |