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The local TLB flushing code keeps an additional mask in the mm.context, the cpu_attach_mask. At the time a global flush of an address space is done the cpu_attach_mask is copied to the mm_cpumask in order to avoid future global flushes in case the mm is used by a single CPU only after the flush. Trouble is that the reset of the mm_cpumask is racy against the detach of an mm address space by switch_mm. The current order is first the global TLB flush and then the copy of the cpu_attach_mask to the mm_cpumask. The order needs to be the other way around. Cc: <stable@vger.kernel.org> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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| appldata | ||
| boot | ||
| configs | ||
| crypto | ||
| hypfs | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| mm | ||
| net | ||
| numa | ||
| oprofile | ||
| pci | ||
| tools | ||
| defconfig | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||