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authorArnd Bergmann <arnd@arndb.de>2017-02-17 18:08:30 +0300
committerDavid S. Miller <davem@davemloft.net>2017-02-17 23:25:49 +0300
commitfbdf0e28d061708cf18ba0f8e0db5360dc9a15b9 (patch)
tree57b98b6fb5b7411be4180fafafb572af85dd0854 /drivers/net/Kconfig
parent74179d44b6e199adaec8c7d842dc61ebefa314c5 (diff)
downloadlinux-fbdf0e28d061708cf18ba0f8e0db5360dc9a15b9.tar.xz
vmxnet3: prevent building with 64K pages
I got a warning about broken code on ARM64 with 64K pages: drivers/net/vmxnet3/vmxnet3_drv.c: In function 'vmxnet3_rq_init': drivers/net/vmxnet3/vmxnet3_drv.c:1679:29: error: large integer implicitly truncated to unsigned type [-Werror=overflow] rq->buf_info[0][i].len = PAGE_SIZE; 'len' here is a 16-bit integer, so this clearly won't work. I don't think this driver is used much on anything other than x86, so there is no need to fix this properly and we can work around it with a Kconfig dependency to forbid known-broken configurations. qemu in theory supports it on other architectures too, but presumably only for compatibility with x86 guests that also run on vmware. CONFIG_PAGE_SIZE_64KB is used on hexagon, mips, sh and tile, the other symbols are architecture-specific names for the same thing. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/Kconfig')
-rw-r--r--drivers/net/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 823bc2fd201f..100fbdc9b95c 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -460,6 +460,9 @@ config XEN_NETDEV_BACKEND
config VMXNET3
tristate "VMware VMXNET3 ethernet driver"
depends on PCI && INET
+ depends on !(PAGE_SIZE_64KB || ARM64_64K_PAGES || \
+ IA64_PAGE_SIZE_64KB || MICROBLAZE_64K_PAGES || \
+ PARISC_PAGE_SIZE_64KB || PPC_64K_PAGES)
help
This driver supports VMware's vmxnet3 virtual ethernet NIC.
To compile this driver as a module, choose M here: the