From: Dave Jiang <dave.jiang@intel.com>
To: Richard Cheng <icheng@nvidia.com>,
dave@stgolabs.net, jic23@kernel.org, alison.schofield@intel.com,
vishal.l.verma@intel.com, djbw@kernel.org,
danwilliams@nvidia.com
Cc: iweiny@kernel.org, ming.li@zohomail.com, gourry@gourry.net,
rrichter@amd.com, linux-cxl@vger.kernel.org,
linux-kernel@vger.kernel.org, kees@kernel.org,
newtonl@nvidia.com, kristinc@nvidia.com, mochs@nvidia.com,
kaihengf@nvidia.com, kobak@nvidia.com
Subject: Re: [PATCH 2/3] cxl/region: Scan all partitions for unmapped poison
Date: Tue, 30 Jun 2026 08:56:18 -0700 [thread overview]
Message-ID: <9f11ac88-0331-4767-a368-2bc934269ba9@intel.com> (raw)
In-Reply-To: <20260630074657.43077-3-icheng@nvidia.com>
On 6/30/26 12:46 AM, Richard Cheng wrote:
> cxl_get_poison_unmapped() sweeps the unmapped tail of each partition
> from ctx->part onward. A fully-mapped partition has no unmapped tail
> , it's a normal per-partition state, but the loop treated it with break,
The comma should be with 'tail'. weird line break?
> aborting the whole sweep and silently skipping unmapped poison in all
> later partition. Use continue so a fully-mapped partition is skipped and
> later partitions are still scanned.
>
> Fixes: be5cbd0840275 ("cxl: Kill enum cxl_decoder_mode")
> Signed-off-by: Richard Cheng <icheng@nvidia.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> ---
> drivers/cxl/core/region.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> index 1e211542b6b6..be246fb09c99 100644
> --- a/drivers/cxl/core/region.c
> +++ b/drivers/cxl/core/region.c
> @@ -2931,7 +2931,7 @@ static int cxl_get_poison_unmapped(struct cxl_memdev *cxlmd,
> offset = res->start;
> length = res->end - offset + 1;
> if (!length)
> - break;
> + continue;
> rc = cxl_mem_get_poison(cxlmd, offset, length, NULL);
> if (rc == -EFAULT && cxlds->part[i].mode == CXL_PARTMODE_RAM)
> continue;
next prev parent reply other threads:[~2026-06-30 15:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-30 7:46 [PATCH 0/3] cxl: Sashiko bug fixes Richard Cheng
2026-06-30 7:46 ` [PATCH 1/3] cxl/features: Reject feature offset that overflows 16-bit field Richard Cheng
2026-06-30 15:54 ` Dave Jiang
2026-07-02 8:15 ` Richard Cheng
2026-07-06 16:52 ` Dave Jiang
2026-06-30 7:46 ` [PATCH 2/3] cxl/region: Scan all partitions for unmapped poison Richard Cheng
2026-06-30 15:56 ` Dave Jiang [this message]
2026-07-01 4:48 ` Alison Schofield
2026-06-30 7:46 ` [PATCH 3/3] cxl/region: Don't leak tolerated RAM -EFAULT from unmapped poison scan Richard Cheng
2026-06-30 16:04 ` Dave Jiang
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