mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-11-10 20:48:12 +00:00
4fde448225
Multiple users report data corruption during 64-bit DMA transfers on systems with AMD NBIO 7.7 and 7.11 controllers. This occurs when BIOS enables AMD "enhanced atomic operations" on PCIe Root Ports. When enhanced atomics are enabled, any 64-bit DMA access may be corrupted. Disable enhanced atomics using SMN for NBIO 7.7 and 7.11 based models. Reported-by: Mikael Etienne <mikael1022bzh@gmail.com> Closes: https://lore.kernel.org/178789300872.392066.15963676631650361573@gmail.com/ Reported-by: Arthur Husband <artmoty@gmail.com> Closes: https://lore.kernel.org/20260406222335.379935-1-artmoty@gmail.com/ Reported-by: Alvin Lim <alvinwylim@gmail.com> Closes: https://lore.kernel.org/20260621100844.1224301-1-alvinwylim@gmail.com/ Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> [bhelgaas: commit log, s/IOVA/DMA/ in comment] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org Cc: David Laight <david.laight.linux@gmail.com> Cc: John Smith <imjohnsmith4000@gmail.com> Cc: Lennert Buytenhek <kernel@wantstofly.org> Cc: Niklas Cassel <cassel@kernel.org> Cc: Roland Waltersson <roland.waltersson@netinsight.net> Link: https://patch.msgid.link/20260908190600.226485-2-mario.limonciello@amd.com |
History
|
|
|---|---|---|
| .. | ||
| acpi.c | ||
| amd_bus.c | ||
| broadcom_bus.c | ||
| bus_numa.c | ||
| bus_numa.h | ||
| ce4100.c | ||
| common.c | ||
| direct.c | ||
| early.c | ||
| fixup.c | ||
| i386.c | ||
| init.c | ||
| intel_mid.c | ||
| irq.c | ||
| legacy.c | ||
| Makefile | ||
| mmconfig-shared.c | ||
| mmconfig_32.c | ||
| mmconfig_64.c | ||
| numachip.c | ||
| olpc.c | ||
| pcbios.c | ||
| xen.c | ||