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| author | Chengchang Tang <tangchengchang@huawei.com> | 2024-09-27 18:33:23 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-05 14:02:02 +0100 |
| commit | 7d9616110b5e38d039b0b4e24a9cd1733c8da163 (patch) | |
| tree | fea087b6a4bb9a74e8571432f235be91275b0713 /rust/kernel/alloc | |
| parent | 86092a4e46d161d24f8106df082e24b8efe87382 (diff) | |
| download | linux-7d9616110b5e38d039b0b4e24a9cd1733c8da163.tar.gz linux-7d9616110b5e38d039b0b4e24a9cd1733c8da163.tar.bz2 linux-7d9616110b5e38d039b0b4e24a9cd1733c8da163.zip | |
RDMA/hns: Disassociate mmap pages for all uctx when HW is being reset
[ Upstream commit 615b94746a54702af923b28bd8a629f4ac0ff0d8 ]
When HW is being reset, userspace should not ring doorbell otherwise
it may lead to abnormal consequence such as RAS.
Disassociate mmap pages for all uctx to prevent userspace from ringing
doorbell to HW. Since all resources will be destroyed during HW reset,
no new mmap is allowed after HW reset is completed.
Fixes: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver")
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20240927103323.1897094-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'rust/kernel/alloc')
0 files changed, 0 insertions, 0 deletions