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| author | Vitaly Kuznetsov <[email protected]> | 2021-10-06 14:50:16 +0200 |
|---|---|---|
| committer | Wei Liu <[email protected]> | 2021-10-06 15:56:45 +0000 |
| commit | f5c20e4a5f18677e22d8dd2846066251b006a62d (patch) | |
| tree | 5b01533cb990142e691163da364cb5a50e26b3d9 /scripts/gdb/linux/utils.py | |
| parent | 95a13ee858c9e426e63c97063677736f74af7163 (diff) | |
x86/hyperv: Avoid erroneously sending IPI to 'self'
__send_ipi_mask_ex() uses an optimization: when the target CPU mask is
equal to 'cpu_present_mask' it uses 'HV_GENERIC_SET_ALL' format to avoid
converting the specified cpumask to VP_SET. This case was overlooked when
'exclude_self' parameter was added. As the result, a spurious IPI to
'self' can be send.
Reported-by: Thomas Gleixner <[email protected]>
Fixes: dfb5c1e12c28 ("x86/hyperv: remove on-stack cpumask from hv_send_ipi_mask_allbutself")
Signed-off-by: Vitaly Kuznetsov <[email protected]>
Reviewed-by: Michael Kelley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Wei Liu <[email protected]>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions