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| author |  Jakub Kicinski <kuba@kernel.org>
| 2023-04-20 16:27:33 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org>
| 2023-04-20 16:29:51 -0700 |
| commit | 681c5b51dc6b8ff1ec05555243eccf64a08cb2fd (patch) | |
| tree | 713e0523bc617cbda9ff930568dd2341907b87b8 /arch/loongarch/Kconfig | |
| parent | net: libwx: fix memory leak in wx_setup_rx_resources (diff) | |
| parent | wifi: ath9k: Don't mark channelmap stack variable read-only in ath9k_mci_upda... (diff) | |
| download | linux-681c5b51dc6b8ff1ec05555243eccf64a08cb2fd.tar.gz linux-681c5b51dc6b8ff1ec05555243eccf64a08cb2fd.tar.bz2 linux-681c5b51dc6b8ff1ec05555243eccf64a08cb2fd.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Adjacent changes:
net/mptcp/protocol.h
63740448a32e ("mptcp: fix accept vs worker race")
2a6a870e44dd ("mptcp: stops worker on unaccepted sockets at listener close")
ddb1a072f858 ("mptcp: move first subflow allocation at mpc access time")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 7fd51257e0ed..3ddde336e6a5 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -447,6 +447,22 @@ config ARCH_IOREMAP protection support. However, you can enable LoongArch DMW-based ioremap() for better performance. +config ARCH_WRITECOMBINE + bool "Enable WriteCombine (WUC) for ioremap()" + help + LoongArch maintains cache coherency in hardware, but when paired + with LS7A chipsets the WUC attribute (Weak-ordered UnCached, which + is similar to WriteCombine) is out of the scope of cache coherency + machanism for PCIe devices (this is a PCIe protocol violation, which + may be fixed in newer chipsets). + + This means WUC can only used for write-only memory regions now, so + this option is disabled by default, making WUC silently fallback to + SUC for ioremap(). You can enable this option if the kernel is ensured + to run on hardware without this bug. + + You can override this setting via writecombine=on/off boot parameter. + config ARCH_STRICT_ALIGN bool "Enable -mstrict-align to prevent unaligned accesses" if EXPERT default y |