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| author | Daniel P. Berrangé <berrange@redhat.com> | 2025-06-10 13:36:49 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2025-06-12 13:39:18 -0400 |
| commit | 5b6cd5c5df4229972d8a0fd9dd9a089a1644d6ba (patch) | |
| tree | 46670c52c66f2c91425c9b6088100a35ed324f94 | |
| parent | 2e438da4929018c62609381e1156aac0b2fe3de3 (diff) | |
| download | qemu-5b6cd5c5df4229972d8a0fd9dd9a089a1644d6ba.zip qemu-5b6cd5c5df4229972d8a0fd9dd9a089a1644d6ba.tar.gz qemu-5b6cd5c5df4229972d8a0fd9dd9a089a1644d6ba.tar.bz2 | |
hw/audio/marvell_88w8618: skip automatic zero-init of large array
The 'mv88w8618_audio_callback' method has a 4k byte array used for
copying data between the audio backend and device. Skip the automatic
zero-init of this array to eliminate the performance overhead in
the I/O hot path.
The 'buf' array will be fully initialized when reading data from
device memory.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20250610123709.835102-12-berrange@redhat.com
[Fixed hw/audio/gus in commit message --Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | hw/audio/marvell_88w8618.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/audio/marvell_88w8618.c b/hw/audio/marvell_88w8618.c index 6d3ebbb..c5c79d0 100644 --- a/hw/audio/marvell_88w8618.c +++ b/hw/audio/marvell_88w8618.c @@ -66,7 +66,7 @@ static void mv88w8618_audio_callback(void *opaque, int free_out, int free_in) { mv88w8618_audio_state *s = opaque; int16_t *codec_buffer; - int8_t buf[4096]; + QEMU_UNINITIALIZED int8_t buf[4096]; int8_t *mem_buffer; int pos, block_size; |