Files
openwrt/target/linux/bcm27xx/patches-6.12/950-0685-nvme-pci-Disable-Host-Memory-Buffer-usage.patch
T
John Audia ff235f09b5 kernel: bump 6.12 to 6.12.78
Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.78

Removed upstreamed:
  generic/pending-6.12/620-net-sfp-improve-Huawei-MA5671a-fixup.patch[1]
  generic/pending-6.12/704-net-phy-register-phy-led_triggers-during-probe-to-av.patch[2]
  airoha/patches-6.12/014-01-v6.13-net-airoha-fix-PSE-memory-configuration-in-airoha_fe.patch[3]
  airoha/patches-6.12/014-02-v6.13-net-airoha-read-default-PSE-reserved-pages-value-bef.patch[4]
  airoha/patches-6.12/031-01-v6.13-net-airoha-Read-completion-queue-data-in-airoha_qdma.patch[5]
  airoha/patches-6.12/128-v7.1-net-airoha-Remove-airoha_dev_stop-in-airoha_remove.patch[6]

Manually rebased:
  airoha/patches-6.12/048-01-v6.15-net-airoha-Move-airoha_eth-driver-in-a-dedicated-fol.patch

All patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.78&id=bbdf6d378e1ddbeadc04c57b182aadefcc3aa917
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.78&id=241cd64cf2e32b28ead151b1795cd8fef2b6e482
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.78&id=a04ac7bc97afe313e10ae4c73797c668dee47c5c
4. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.78&id=a9ed47c3663219e20406d566f02809de05373a42
5. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.78&id=4cba4373abac7ba27fdb33057a29b92efa8fd15d
6. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.12.78&id=652ec118d8dc1b088e685d5562995b6665463771

Signed-off-by: John Audia <therealgraysky@proton.me>
Link: https://github.com/openwrt/openwrt/pull/22607
[Fix 048-01-v6.15-net-airoha-Move-airoha_eth-driver-in-a-dedicated-fol]
(cherry picked from commit bb3da35c90)
Link: https://github.com/openwrt/openwrt/pull/22699
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2026-04-02 23:23:41 +02:00

49 lines
1.3 KiB
Diff

From 4263812f0e010a193c6654f75eda49220066bd57 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Tue, 3 Dec 2024 15:57:01 +0000
Subject: [PATCH] nvme-pci: Disable Host Memory Buffer usage
Some NVME drives seem to request significant amounts of DMA coherent
memory - enough to exhaust our standard 64MB CMA allocation.
Try disabling the feature to see what effect it has - drives should
continue to function without it.
Link: https://github.com/raspberrypi/linux/issues/6504
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
drivers/nvme/host/pci.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2111,6 +2111,7 @@ static void nvme_free_host_mem(struct nv
dev->nr_host_mem_descs = 0;
}
+#if 0
static int __nvme_alloc_host_mem(struct nvme_dev *dev, u64 preferred,
u32 chunk_size)
{
@@ -2179,9 +2180,11 @@ out:
dev->host_mem_descs = NULL;
return -ENOMEM;
}
+#endif
static int nvme_alloc_host_mem(struct nvme_dev *dev, u64 min, u64 preferred)
{
+#if 0
u64 min_chunk = min_t(u64, preferred, PAGE_SIZE * MAX_ORDER_NR_PAGES);
u64 hmminds = max_t(u32, dev->ctrl.hmminds * 4096, PAGE_SIZE * 2);
u64 chunk_size;
@@ -2194,6 +2197,7 @@ static int nvme_alloc_host_mem(struct nv
nvme_free_host_mem(dev);
}
}
+#endif
return -ENOMEM;
}