Message-ID: <6a655e9f-9878-4292-9d16-f988c4bdfc73@linux.dev>
Date: Wed, 10 Jan 2024 20:05:36 -0800
From: Yonghong Song <yonghong.song@...ux.dev>
To: Nathan Chancellor <nathan@...nel.org>, akpm@...ux-foundation.org
Cc: llvm@...ts.linux.dev, patches@...ts.linux.dev,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linuxppc-dev@...ts.ozlabs.org, kvm@...r.kernel.org,
 linux-riscv@...ts.infradead.org, linux-trace-kernel@...r.kernel.org,
 linux-s390@...r.kernel.org, linux-pm@...r.kernel.org,
 linux-crypto@...r.kernel.org, linux-efi@...r.kernel.org,
 amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
 linux-media@...r.kernel.org, linux-arch@...r.kernel.org,
 kasan-dev@...glegroups.com, linux-mm@...ck.org, bridge@...ts.linux.dev,
 netdev@...r.kernel.org, linux-security-module@...r.kernel.org,
 linux-kselftest@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
 andrii@...nel.org, mykolal@...com, bpf@...r.kernel.org
Subject: Re: [PATCH 1/3] selftests/bpf: Update LLVM Phabricator links


On 1/9/24 2:16 PM, Nathan Chancellor wrote:
> reviews.llvm.org was LLVM's Phabricator instances for code review. It
> has been abandoned in favor of GitHub pull requests. While the majority
> of links in the kernel sources still work because of the work Fangrui
> has done turning the dynamic Phabricator instance into a static archive,
> there are some issues with that work, so preemptively convert all the
> links in the kernel sources to point to the commit on GitHub.
>
> Most of the commits have the corresponding differential review link in
> the commit message itself so there should not be any loss of fidelity in
> the relevant information.
>
> Additionally, fix a typo in the xdpwall.c print ("LLMV" -> "LLVM") while
> in the area.
>
> Link: https://discourse.llvm.org/t/update-on-github-pull-requests/71540/172
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>

Ack with one nit below.

Acked-by: Yonghong Song <yonghong.song@...ux.dev>

> ---
> Cc: ast@...nel.org
> Cc: daniel@...earbox.net
> Cc: andrii@...nel.org
> Cc: mykolal@...com
> Cc: bpf@...r.kernel.org
> Cc: linux-kselftest@...r.kernel.org
> ---
>   tools/testing/selftests/bpf/README.rst             | 32 +++++++++++-----------
>   tools/testing/selftests/bpf/prog_tests/xdpwall.c   |  2 +-
>   .../selftests/bpf/progs/test_core_reloc_type_id.c  |  2 +-
>   3 files changed, 18 insertions(+), 18 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
> index cb9b95702ac6..b9a493f66557 100644
> --- a/tools/testing/selftests/bpf/README.rst
> +++ b/tools/testing/selftests/bpf/README.rst
> @@ -115,7 +115,7 @@ the insn 20 undoes map_value addition. It is currently impossible for the
>   verifier to understand such speculative pointer arithmetic.
>   Hence `this patch`__ addresses it on the compiler side. It was committed on llvm 12.
>   
> -__ https://reviews.llvm.org/D85570
> +__ https://github.com/llvm/llvm-project/commit/ddf1864ace484035e3cde5e83b3a31ac81e059c6
>   
>   The corresponding C code
>   
> @@ -165,7 +165,7 @@ This is due to a llvm BPF backend bug. `The fix`__
>   has been pushed to llvm 10.x release branch and will be
>   available in 10.0.1. The patch is available in llvm 11.0.0 trunk.
>   
> -__  https://reviews.llvm.org/D78466
> +__  https://github.com/llvm/llvm-project/commit/3cb7e7bf959dcd3b8080986c62e10a75c7af43f0
>   
>   bpf_verif_scale/loop6.bpf.o test failure with Clang 12
>   ======================================================
> @@ -204,7 +204,7 @@ r5(w5) is eventually saved on stack at insn #24 for later use.
>   This cause later verifier failure. The bug has been `fixed`__ in
>   Clang 13.
>   
> -__  https://reviews.llvm.org/D97479
> +__  https://github.com/llvm/llvm-project/commit/1959ead525b8830cc8a345f45e1c3ef9902d3229
>   
>   BPF CO-RE-based tests and Clang version
>   =======================================
> @@ -221,11 +221,11 @@ failures:
>   - __builtin_btf_type_id() [0_, 1_, 2_];
>   - __builtin_preserve_type_info(), __builtin_preserve_enum_value() [3_, 4_].
>   
> -.. _0: https://reviews.llvm.org/D74572
> -.. _1: https://reviews.llvm.org/D74668
> -.. _2: https://reviews.llvm.org/D85174
> -.. _3: https://reviews.llvm.org/D83878
> -.. _4: https://reviews.llvm.org/D83242
> +.. _0: https://github.com/llvm/llvm-project/commit/6b01b465388b204d543da3cf49efd6080db094a9
> +.. _1: https://github.com/llvm/llvm-project/commit/072cde03aaa13a2c57acf62d79876bf79aa1919f
> +.. _2: https://github.com/llvm/llvm-project/commit/00602ee7ef0bf6c68d690a2bd729c12b95c95c99
> +.. _3: https://github.com/llvm/llvm-project/commit/6d218b4adb093ff2e9764febbbc89f429412006c
> +.. _4: https://github.com/llvm/llvm-project/commit/6d6750696400e7ce988d66a1a00e1d0cb32815f8
>   
>   Floating-point tests and Clang version
>   ======================================
> @@ -234,7 +234,7 @@ Certain selftests, e.g. core_reloc, require support for the floating-point
>   types, which was introduced in `Clang 13`__. The older Clang versions will
>   either crash when compiling these tests, or generate an incorrect BTF.
>   
> -__  https://reviews.llvm.org/D83289
> +__  https://github.com/llvm/llvm-project/commit/a7137b238a07d9399d3ae96c0b461571bd5aa8b2
>   
>   Kernel function call test and Clang version
>   ===========================================
> @@ -248,7 +248,7 @@ Without it, the error from compiling bpf selftests looks like:
>   
>     libbpf: failed to find BTF for extern 'tcp_slow_start' [25] section: -2
>   
> -__ https://reviews.llvm.org/D93563
> +__ https://github.com/llvm/llvm-project/commit/886f9ff53155075bd5f1e994f17b85d1e1b7470c
>   
>   btf_tag test and Clang version
>   ==============================
> @@ -264,8 +264,8 @@ Without them, the btf_tag selftest will be skipped and you will observe:
>   
>     #<test_num> btf_tag:SKIP
>   
> -.. _0: https://reviews.llvm.org/D111588
> -.. _1: https://reviews.llvm.org/D111199
> +.. _0: https://github.com/llvm/llvm-project/commit/a162b67c98066218d0d00aa13b99afb95d9bb5e6
> +.. _1: https://github.com/llvm/llvm-project/commit/3466e00716e12e32fdb100e3fcfca5c2b3e8d784
>   
>   Clang dependencies for static linking tests
>   ===========================================
> @@ -274,7 +274,7 @@ linked_vars, linked_maps, and linked_funcs tests depend on `Clang fix`__ to
>   generate valid BTF information for weak variables. Please make sure you use
>   Clang that contains the fix.
>   
> -__ https://reviews.llvm.org/D100362
> +__ https://github.com/llvm/llvm-project/commit/968292cb93198442138128d850fd54dc7edc0035
>   
>   Clang relocation changes
>   ========================
> @@ -292,7 +292,7 @@ Here, ``type 2`` refers to new relocation type ``R_BPF_64_ABS64``.
>   To fix this issue, user newer libbpf.
>   
>   .. Links
> -.. _clang reloc patch: https://reviews.llvm.org/D102712
> +.. _clang reloc patch: https://github.com/llvm/llvm-project/commit/6a2ea84600ba4bd3b2733bd8f08f5115eb32164b
>   .. _kernel llvm reloc: /Documentation/bpf/llvm_reloc.rst
>   
>   Clang dependencies for the u32 spill test (xdpwall)
> @@ -304,6 +304,6 @@ from running test_progs will look like:
>   
>   .. code-block:: console
>   
> -  test_xdpwall:FAIL:Does LLVM have https://reviews.llvm.org/D109073? unexpected error: -4007
> +  test_xdpwall:FAIL:Does LLVM have https://github.com/llvm/llvm-project/commit/ea72b0319d7b0f0c2fcf41d121afa5d031b319d5? unexpected error: -4007
>   
> -__ https://reviews.llvm.org/D109073
> +__ https://github.com/llvm/llvm-project/commit/ea72b0319d7b0f0c2fcf41d121afa5d031b319d

To be consistent with other links, could you add the missing last alnum '5' to the above link?

> diff --git a/tools/testing/selftests/bpf/prog_tests/xdpwall.c b/tools/testing/selftests/bpf/prog_tests/xdpwall.c
> index f3927829a55a..4599154c8e9b 100644
> --- a/tools/testing/selftests/bpf/prog_tests/xdpwall.c
> +++ b/tools/testing/selftests/bpf/prog_tests/xdpwall.c
> @@ -9,7 +9,7 @@ void test_xdpwall(void)
>   	struct xdpwall *skel;
>   
>   	skel = xdpwall__open_and_load();
> -	ASSERT_OK_PTR(skel, "Does LLMV have https://reviews.llvm.org/D109073?");
> +	ASSERT_OK_PTR(skel, "Does LLVM have https://github.com/llvm/llvm-project/commit/ea72b0319d7b0f0c2fcf41d121afa5d031b319d5?");
>   
>   	xdpwall__destroy(skel);
>   }
> diff --git a/tools/testing/selftests/bpf/progs/test_core_reloc_type_id.c b/tools/testing/selftests/bpf/progs/test_core_reloc_type_id.c
> index 22aba3f6e344..6fc8b9d66e34 100644
> --- a/tools/testing/selftests/bpf/progs/test_core_reloc_type_id.c
> +++ b/tools/testing/selftests/bpf/progs/test_core_reloc_type_id.c
> @@ -80,7 +80,7 @@ int test_core_type_id(void *ctx)
>   	 * to detect whether this test has to be executed, however strange
>   	 * that might look like.
>   	 *
> -	 *   [0] https://reviews.llvm.org/D85174
> +	 *   [0] https://github.com/llvm/llvm-project/commit/00602ee7ef0bf6c68d690a2bd729c12b95c95c99
>   	 */
>   #if __has_builtin(__builtin_preserve_type_info)
>   	struct core_reloc_type_id_output *out = (void *)&data.out;
>

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