On 9/19/19 9:51 AM, Josh Poimboeuf wrote:
> On Wed, Sep 18, 2019 at 09:04:21PM -0700, Randy Dunlap wrote:
>> On 9/18/19 3:10 PM, Mark Brown wrote:
>>> Hi all,
>>>
>>> Changes since 20190917:
>>>
>>
>> on x86_64:
>>
>> drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: i915_gem_execbuffer2_ioctl()+0x2fb: call to gen8_canonical_addr() with UACCESS enabled
>>
>> using
>>> gcc --version
>> gcc (SUSE Linux) 7.4.1 20190424 [gcc-7-branch revision 270538]
>>
>> .o and .config files are attached.
>
> Does this fix it?
This patch produces this message:
drivers/gpu/drm/i915/gem/i915_gem_execbuffer.o: warning: objtool: i915_gem_execbuffer2_ioctl()+0x2fb: call to sign_extend64.constprop.20() with UACCESS enabled
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> index b5f6937369ea..7e111cb5b14b 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
> @@ -284,7 +284,7 @@ struct i915_execbuffer {
> * canonical form [63:48] == [47]."
> */
> #define GEN8_HIGH_ADDRESS_BIT 47
> -static inline u64 gen8_canonical_addr(u64 address)
> +static __always_inline u64 gen8_canonical_addr(u64 address)
> {
> return sign_extend64(address, GEN8_HIGH_ADDRESS_BIT);
> }
>
--
~Randy
