diff options
| author | Jordan Niethe <jniethe5@gmail.com> | 2023-08-15 16:47:11 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-10-22 16:32:27 -0700 |
| commit | 03434d52024934620a001a875b540b06abd0b169 (patch) | |
| tree | 8185d5ae2c1180670b3211952bc3e4d43cf6b39e /python/scripts | |
| parent | 096d118592caa03188db6a190988221b65a2bd81 (diff) | |
| download | focaccia-qemu-03434d52024934620a001a875b540b06abd0b169.tar.gz focaccia-qemu-03434d52024934620a001a875b540b06abd0b169.zip | |
tcg/ppc: Enable direct branching tcg_out_goto_tb with TCG_REG_TB
Direct branch patching was disabled when using TCG_REG_TB in commit
736a1588c1 ("tcg/ppc: Fix race in goto_tb implementation").
The issue with direct branch patching with TCG_REG_TB is the lack of
synchronization between the new TCG_REG_TB being established and the
direct branch being patched in.
If each translation block is responsible for establishing its own
TCG_REG_TB then there can be no synchronization issue.
Make each translation block begin by setting up its own TCG_REG_TB.
Use the preferred 'bcl 20,31,$+4' sequence.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
[rth: Split out tcg_out_tb_start, power9 addpcis]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'python/scripts')
0 files changed, 0 insertions, 0 deletions