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| author | Daniel P. Berrangé <berrange@redhat.com> | 2025-06-10 13:36:56 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2025-06-12 13:40:15 -0400 |
| commit | 6992c886838282f36b20deee44b666bbfc573a8f (patch) | |
| tree | 856f7922c76a99d882903eb6326eb3cec59993b3 | |
| parent | 5a1f614d0cd0bcc8e84e0b7ab6af63d56bd348a2 (diff) | |
| download | focaccia-qemu-6992c886838282f36b20deee44b666bbfc573a8f.tar.gz focaccia-qemu-6992c886838282f36b20deee44b666bbfc573a8f.zip | |
hw/misc/aspeed_hace: skip automatic zero-init of large array
The 'do_hash_operation' method has a 256 element iovec array used for holding pointers to data that is to be hashed. Skip the automatic zero-init of this array to eliminate the performance overhead in the I/O hot path. The 'iovec' array will be selectively initialized based on data that needs to be hashed. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20250610123709.835102-19-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | hw/misc/aspeed_hace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/misc/aspeed_hace.c b/hw/misc/aspeed_hace.c index 8924a30eff..726368fbbc 100644 --- a/hw/misc/aspeed_hace.c +++ b/hw/misc/aspeed_hace.c @@ -419,7 +419,7 @@ static void hash_execute_acc_mode(AspeedHACEState *s, int algo, static void do_hash_operation(AspeedHACEState *s, int algo, bool sg_mode, bool acc_mode) { - struct iovec iov[ASPEED_HACE_MAX_SG]; + QEMU_UNINITIALIZED struct iovec iov[ASPEED_HACE_MAX_SG]; bool acc_final_request = false; int iov_idx = -1; |