Revision c15e0ae42c8e5a61e9aca8aac920517cf7b3e94e authored by Li RongQing on 09 March 2022, 08:35:44 UTC, committed by Paolo Bonzini on 02 April 2022, 09:37:27 UTC
If apic_id is less than min, and (max - apic_id) is greater than
KVM_IPI_CLUSTER_SIZE, then the third check condition is satisfied but
the new apic_id does not fit the bitmask. In this case __send_ipi_mask
should send the IPI.
This is mostly theoretical, but it can happen if the apic_ids on three
iterations of the loop are for example 1, KVM_IPI_CLUSTER_SIZE, 0.
Fixes: aaffcfd1e82 ("KVM: X86: Implement PV IPIs in linux guest")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Message-Id: <1646814944-51801-1-git-send-email-lirongqing@baidu.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 parent 2a8859f
| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 76.5 KB |
| Makefile | -rw-r--r-- | 1.1 KB |
| calibrate.c | -rw-r--r-- | 8.6 KB |
| do_mounts.c | -rw-r--r-- | 15.6 KB |
| do_mounts.h | -rw-r--r-- | 908 bytes |
| do_mounts_initrd.c | -rw-r--r-- | 3.4 KB |
| do_mounts_rd.c | -rw-r--r-- | 7.7 KB |
| init_task.c | -rw-r--r-- | 6.1 KB |
| initramfs.c | -rw-r--r-- | 16.4 KB |
| main.c | -rw-r--r-- | 39.6 KB |
| noinitramfs.c | -rw-r--r-- | 862 bytes |
| version.c | -rw-r--r-- | 1.1 KB |
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