Misc patches for 5.0-rc2

[PULL 06/15] util/bufferiszero: assign length_to_accel value for each accelerator case

Paolo Bonzini posted 15 patches 5 years, 7 months ago

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Maintainers: "Michael S. Tsirkin" <mst@redhat.com>, Roman Bolshakov <r.bolshakov@yadro.com>, Juan Quintela <quintela@redhat.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Fam Zheng <fam@euphon.net>, Marcelo Tosatti <mtosatti@redhat.com>, Michael Roth <mdroth@linux.vnet.ibm.com>, Eduardo Habkost <ehabkost@redhat.com>, Markus Armbruster <armbru@redhat.com>, Paul Durrant <paul@xen.org>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Stefano Stabellini <sstabellini@kernel.org>, Dmitry Fleytman <dmitry.fleytman@gmail.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Richard Henderson <rth@twiddle.net>, Paolo Bonzini <pbonzini@redhat.com>, Anthony Perard <anthony.perard@citrix.com>

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[PULL 06/15] util/bufferiszero: assign length_to_accel value for each accelerator case

Posted by Paolo Bonzini 5 years, 7 months ago

From: Robert Hoo <robert.hu@linux.intel.com>

Because in unit test, init_accel() will be called several times, each with
different accelerator type.

Signed-off-by: Robert Hoo <robert.hu@linux.intel.com>
Message-Id: <1585119021-46593-1-git-send-email-robert.hu@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 util/bufferiszero.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/util/bufferiszero.c b/util/bufferiszero.c
index 663903553a..b8012532e4 100644
--- a/util/bufferiszero.c
+++ b/util/bufferiszero.c
@@ -254,13 +254,16 @@ static void init_accel(unsigned cache)
     bool (*fn)(const void *, size_t) = buffer_zero_int;
     if (cache & CACHE_SSE2) {
         fn = buffer_zero_sse2;
+        length_to_accel = 64;
     }
 #ifdef CONFIG_AVX2_OPT
     if (cache & CACHE_SSE4) {
         fn = buffer_zero_sse4;
+        length_to_accel = 64;
     }
     if (cache & CACHE_AVX2) {
         fn = buffer_zero_avx2;
+        length_to_accel = 64;
     }
 #endif
 #ifdef CONFIG_AVX512F_OPT
-- 
2.18.2