Currently we guard FPSIMD/SVE state conversions with a check for the system supporting SVE but SME only systems may need to sync streaming mode SVE state so add a check for SME support too. These functions are only used by the ptrace code.
Fixes: e12310a0d30 ("arm64/sme: Implement ptrace support for streaming mode SVE registers") Signed-off-by: Mark Brown broonie@kernel.org Cc: stable@vger.kernel.org --- arch/arm64/kernel/fpsimd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 520b681a07bb..b4afa0d147cc 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -679,7 +679,7 @@ static void fpsimd_to_sve(struct task_struct *task) void *sst = task->thread.sve_state; struct user_fpsimd_state const *fst = &task->thread.uw.fpsimd_state;
- if (!system_supports_sve()) + if (!system_supports_sve() && !system_supports_sme()) return;
vq = sve_vq_from_vl(thread_get_cur_vl(&task->thread)); @@ -705,7 +705,7 @@ static void sve_to_fpsimd(struct task_struct *task) unsigned int i; __uint128_t const *p;
- if (!system_supports_sve()) + if (!system_supports_sve() && !system_supports_sme()) return;
vl = thread_get_cur_vl(&task->thread);