Commit 327242a4 authored by Max Filippov's avatar Max Filippov Committed by Greg Kroah-Hartman

xtensa: fix coprocessor context offset definitions

commit 03bc996af0cc71c7f30c384d8ce7260172423b34 upstream.

Coprocessor context offsets are used by the assembly code that moves
coprocessor context between the individual fields of the
thread_info::xtregs_cp structure and coprocessor registers.
This fixes coprocessor context clobbering on flushing and reloading
during normal user code execution and user process debugging in the
presence of more than one coprocessor in the core configuration.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c8e13044
......@@ -90,14 +90,14 @@ int main(void)
DEFINE(THREAD_SP, offsetof (struct task_struct, thread.sp));
DEFINE(THREAD_CPENABLE, offsetof (struct thread_info, cpenable));
#if XTENSA_HAVE_COPROCESSORS
DEFINE(THREAD_XTREGS_CP0, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP1, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP2, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP3, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP4, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP5, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP6, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP7, offsetof (struct thread_info, xtregs_cp));
DEFINE(THREAD_XTREGS_CP0, offsetof(struct thread_info, xtregs_cp.cp0));
DEFINE(THREAD_XTREGS_CP1, offsetof(struct thread_info, xtregs_cp.cp1));
DEFINE(THREAD_XTREGS_CP2, offsetof(struct thread_info, xtregs_cp.cp2));
DEFINE(THREAD_XTREGS_CP3, offsetof(struct thread_info, xtregs_cp.cp3));
DEFINE(THREAD_XTREGS_CP4, offsetof(struct thread_info, xtregs_cp.cp4));
DEFINE(THREAD_XTREGS_CP5, offsetof(struct thread_info, xtregs_cp.cp5));
DEFINE(THREAD_XTREGS_CP6, offsetof(struct thread_info, xtregs_cp.cp6));
DEFINE(THREAD_XTREGS_CP7, offsetof(struct thread_info, xtregs_cp.cp7));
#endif
DEFINE(THREAD_XTREGS_USER, offsetof (struct thread_info, xtregs_user));
DEFINE(XTREGS_USER_SIZE, sizeof(xtregs_user_t));
......
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