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authorJiang Liu <jiang.liu@huawei.com>2013-09-27 09:04:41 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2013-09-27 18:21:37 +0100
commit6db83cea1c975b9a102e17def7d2795814e1ae2b (patch)
tree8bb027ee7d2738649783800354f88de59580d9cd /arch/arm64/configs
parentarm64: use correct register width when retrieving ASID (diff)
downloadlinux-dev-6db83cea1c975b9a102e17def7d2795814e1ae2b.tar.xz
linux-dev-6db83cea1c975b9a102e17def7d2795814e1ae2b.zip
arm64: fix possible invalid FPSIMD initialization state
If context switching happens during executing fpsimd_flush_thread(), stale value in FPSIMD registers will be saved into current thread's fpsimd_state by fpsimd_thread_switch(). That may cause invalid initialization state for the new process, so disable preemption when executing fpsimd_flush_thread(). Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Jiang Liu <liuj97@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/configs')
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