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From: Robert Hoo <robert.hu@linux.intel.com>
To: qemu-devel@nongnu.org, pbonzini@redhat.com, richard.henderson@linaro.org
Cc: robert.hu@intel.com, Robert Hoo <robert.hu@linux.intel.com>
Subject: [PATCH 1/2] util/bufferiszero: assign length_to_accel value for each accelerator case
Date: Wed, 25 Mar 2020 14:50:20 +0800
Message-ID: <1585119021-46593-1-git-send-email-robert.hu@linux.intel.com> (raw)

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>
---
 util/bufferiszero.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/util/bufferiszero.c b/util/bufferiszero.c
index 6639035..b801253 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
-- 
1.8.3.1



             reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-25  6:50 Robert Hoo [this message]
2020-03-25  6:50 ` [PATCH 2/2] util/bufferiszero: improve avx2 accelerator Robert Hoo
2020-03-25 12:54   ` Eric Blake
2020-03-26  2:09     ` Hu, Robert
2020-03-26  9:43       ` Paolo Bonzini
2020-03-26 13:26       ` Eric Blake
2020-03-26 13:51         ` Robert Hoo

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