arm64/signal: Always allocate SVE signal frames on SME only systems

Currently we only allocate space for SVE signal frames on systems that
support SVE, meaning that SME only systems do not allocate a signal frame
for streaming mode SVE state. Change the check so space is allocated if
either feature is supported.

Fixes: 85ed24dad290 ("arm64/sme: Implement streaming SVE signal handling")
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221223-arm64-fix-sme-only-v1-3-938d663f69e5@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index f90ee2dc413cd0b335eba4a61938bcebed319177..be279fd482480de2a3b2dfff80a37300907555d8 100644 (file)
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -737,7 +737,7 @@ static int setup_sigframe_layout(struct rt_sigframe_user_layout *user,
                        return err;
        }
 
-       if (system_supports_sve()) {
+       if (system_supports_sve() || system_supports_sme()) {
                unsigned int vq = 0;
 
                if (add_all || test_thread_flag(TIF_SVE) ||