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commit: 51976ca549f077ef6daa1a49c7a0a80e21601f94 |
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Author: Georgy Yakovlev <gyakovlev <AT> gentoo <DOT> org> |
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AuthorDate: Mon Sep 16 01:23:14 2019 +0000 |
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Commit: Georgy Yakovlev <gyakovlev <AT> gentoo <DOT> org> |
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CommitDate: Mon Sep 16 01:27:07 2019 +0000 |
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URL: https://gitweb.gentoo.org/data/gentoo-news.git/commit/?id=51976ca5 |
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|
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2019-09-11-cpu_flags_ppc-introduction: new item |
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|
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Signed-off-by: Georgy Yakovlev <gyakovlev <AT> gentoo.org> |
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|
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.../2019-09-11-cpu_flags_ppc-introduction.en.txt | 38 ++++++++++++++++++++++ |
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1 file changed, 38 insertions(+) |
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diff --git a/2019-09-11-cpu_flags_ppc-introduction/2019-09-11-cpu_flags_ppc-introduction.en.txt b/2019-09-11-cpu_flags_ppc-introduction/2019-09-11-cpu_flags_ppc-introduction.en.txt |
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new file mode 100644 |
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index 0000000..a4a4ee5 |
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--- /dev/null |
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+++ b/2019-09-11-cpu_flags_ppc-introduction/2019-09-11-cpu_flags_ppc-introduction.en.txt |
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@@ -0,0 +1,38 @@ |
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+Title: new CPU_FLAGS_PPC USE_EXPAND |
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+Author: Georgy Yakovlev <gyakovlev@g.o> |
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+Posted: 2019-09-11 |
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+Revision: 1 |
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+News-Item-Format: 2.0 |
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+Display-If-Keyword: ~ppc |
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+Display-If-Keyword: ~ppc64 |
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+Display-If-Keyword: ppc |
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+Display-If-Keyword: ppc64 |
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+ |
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+ |
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+A new set of CPU_FLAGS_PPC USE_EXPAND flags has been added. |
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+The flags are: |
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+ |
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+ altivec - Use the AltiVec/VMX instruction set |
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+ vsx - Use the Vector Scalar Extension instruction set |
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+ vsx3 - Use the Vector Scalar Extension v.3 instruction set |
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+ |
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+Note that CPU_FLAGS_PPC variable is used on ppc and ppc64 architectures. |
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+ |
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+In order to transition to new set of flags, if the following flag was |
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+was present: |
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+ |
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+ USE="altivec" |
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+ |
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+This flag needs to be set as: |
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+ |
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+ CPU_FLAGS_PPC="altivec" |
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+ |
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+It's advised to keep 'altivec' USE flag enabled to ensure safe |
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+migration and compatibility with external repositories. |
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+'vsx' and 'vsx3' are new flags and no migration necessary. |
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+ |
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+To help users enable the correct USE_EXPAND flags PPC support has been |
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+added to app-portage/cpuid2cpuflags package: |
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+ |
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+ # emerge -1v >=app-portage/cpuid2cpuflags-7 |
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+ $ cpuid2cpuflags |
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