crypto: hisilicon/qm - add the save operation of eqe and aeqe

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The eqe and aeqe are device updated values that include the
valid bit and queue number. In the current process, there is no
memory barrier added, so it cannot be guaranteed that the valid
bit is read before other processes are executed. Since eqe and aeqe
are only 4 bytes and the device writes them to memory in a single
operation, saving the values of eqe and aeqe ensures that the valid
bit and queue number read by the CPU were written by the device
simultaneously.

Signed-off-by: nieweiqiang <nieweiqiang@huawei.com>
Signed-off-by: Chenghai Huang <huangchenghai2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

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nieweiqiang 2025-10-25 18:12:55 +08:00 • committed by Herbert Xu

parent f5e297a112

commit f5a332980a

1 changed files with 14 additions and 11 deletions

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drivers/crypto/hisilicon/qm.c

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