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| author | Nicholas Piggin <npiggin@gmail.com> | 2023-05-30 23:04:47 +1000 |
|---|---|---|
| committer | Daniel Henrique Barboza <danielhb413@gmail.com> | 2023-06-10 10:19:24 -0300 |
| commit | 6494d2c1fd4ebc37b575130399a97a1fcfff1afc (patch) | |
| tree | 7cf1f320f297839621d74c49cf37209f83c689d5 /python | |
| parent | 34b4313070b5f5613fb8198806f57614826b0aac (diff) | |
| download | focaccia-qemu-6494d2c1fd4ebc37b575130399a97a1fcfff1afc.tar.gz focaccia-qemu-6494d2c1fd4ebc37b575130399a97a1fcfff1afc.zip | |
target/ppc: Fix PMU hflags calculation
Some of the PMU hflags bits can go out of synch, for example a store to
MMCR0 with PMCjCE=1 fails to update hflags correctly and results in
hflags mismatch:
qemu: fatal: TCG hflags mismatch (current:0x2408003d rebuilt:0x240a003d)
This can be reproduced by running perf on a recent machine.
Some of the fragility here is the duplication of PMU hflags calculations.
This change consolidates that in a single place to update pmu-related
hflags, to be called after a well defined state changes.
The post-load PMU update is pulled out of the MSR update because it does
not depend on the MSR value.
Fixes: 8b3d1c49a9f0 ("target/ppc: Add new PMC HFLAGS")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20230530130447.372617-1-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Diffstat (limited to 'python')
0 files changed, 0 insertions, 0 deletions