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nvme: add wmb before writing shadow register

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Fixes issue #1828.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I02ba897b6c10f4ec870f46825f09e00f0c7c0235
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7905
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Jim Harris 2021-05-17 23:16:53 +00:00
parent c754043946
commit 3a7a66e505
1 changed files with 2 additions and 0 deletions
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2
lib/nvme/nvme_pcie_internal.h
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@ -241,6 +241,8 @@ nvme_pcie_qpair_update_mmio_required(struct spdk_nvme_qpair *qpair, uint16_t val
return true;
}
spdk_wmb();
old = *shadow_db;
*shadow_db = value;