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author | Peter Zijlstra <peterz@infradead.org> | 2023-05-19 13:21:07 +0300 |
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committer | Peter Zijlstra <peterz@infradead.org> | 2023-06-05 22:11:07 +0300 |
commit | 9397fa2ea3e7634f61da1ab76b9eb88ba04dfdfc (patch) | |
tree | f7e754cc61e0394b21845060b3f41f6b5f7bc450 /drivers/memory/tegra/tegra186.c | |
parent | 77750f78b0b3247c64b9821b49158cafe0506880 (diff) | |
download | linux-9397fa2ea3e7634f61da1ab76b9eb88ba04dfdfc.tar.xz |
clocksource: hyper-v: Adjust hv_read_tsc_page_tsc() to avoid special casing U64_MAX
Currently hv_read_tsc_page_tsc() (ab)uses the (valid) time value of
U64_MAX as an error return. This breaks the clean wrap-around of the
clock.
Modify the function signature to return a boolean state and provide
another u64 pointer to store the actual time on success. This obviates
the need to steal one time value and restores the full counter width.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Michael Kelley <mikelley@microsoft.com> # Hyper-V
Link: https://lore.kernel.org/r/20230519102715.775630881@infradead.org
Diffstat (limited to 'drivers/memory/tegra/tegra186.c')
0 files changed, 0 insertions, 0 deletions