Re: [PATCH v16 00/23] selftests, powerpc, x86: Memory Protection Keys

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On 30/01/20 11:49 am, Sandipan Das wrote:
> Hi Dave,
> 
> On 30/01/20 12:29 am, Dave Hansen wrote:
>> On 1/28/20 1:38 AM, Sandipan Das wrote:
>>> On 27/01/20 9:12 pm, Dave Hansen wrote:
>>>> How have you tested this patch (and the whole series for that matter)?
>>>>
>>> I replaced the second patch with this one and did a build test.
>>> Till v16, I had tested the whole series (build + run) on both a POWER8
>>> system (with 4K and 64K page sizes) and a Skylake SP system but for
>>> x86_64 only.
>>
>> Do you have any idea why I was seeing x86 build errors and you were not?
>>
> 
> There were problems with patch 2 from v17. The fixed patch is what I replied
> with previously in this thread. The test results that I posted were with that
> patch included. Will post out v18 today with the fix.
> 

In patch 2 of v17, the issue was with the target names. Upon adding something
to TEST_GEN_FILES, rules for targets like the following are expected to be
defined.
  <path-to-linux-source>/tools/testing/selftests/vm/protection_keys_32
  <path-to-linux-source>/tools/testing/selftests/vm/protection_keys_64
  <path-to-linux-source>/tools/testing/selftests/vm/protection_keys

But instead, I only defined rules for these.
  protection_keys_32
  protection_keys_64
  protection_keys

Hence the build was failing in these cases:
  $ make -C tools/testing/selftests
  $ make -C tools/testing/selftests/vm
  $ cd tools/testing/selftests/vm
  $ make

But worked in these cases:
  $ make -C tools/testing/selftests/vm protection_keys
  $ cd tools/testing/selftests/vm
  $ make protection_keys

This has been addressed in v18.

- Sandipan





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