Guenter Roeck 0552d5727e parisc: Strip upper 32 bit of sum in csum_ipv6_magic for 64-bit builds ... [ Upstream commit 0568b6f0d8 ] IPv6 checksum tests with unaligned addresses on 64-bit builds result in unexpected failures. Expected expected == csum_result, but expected == 46591 (0xb5ff) csum_result == 46381 (0xb52d) with alignment offset 1 Oddly enough, the problem disappeared after adding test code into the beginning of csum_ipv6_magic(). As it turns out, the 'sum' parameter of csum_ipv6_magic() is declared as __wsum, which is a 32-bit variable. However, it is treated as 64-bit variable in the 64-bit assembler code. Tests showed that the upper 32 bit of the register used to pass the variable are _not_ cleared when entering the function. This can result in checksum calculation errors. Clearing the upper 32 bit of 'sum' as first operation in the assembler code fixes the problem. Acked-by: Helge Deller <deller@gmx.de> Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-04-10 16:18:36 +02:00
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boot	parisc: Add missing FORCE prerequisite in Makefile	2021-09-09 12:44:30 +02:00
configs	configs: remove the obsolete CONFIG_INPUT_POLLDEV	2021-09-08 11:50:28 -07:00
include	parisc: Strip upper 32 bit of sum in csum_ipv6_magic for 64-bit builds	2024-04-10 16:18:36 +02:00
kernel	parisc/ftrace: add missing CONFIG_DYNAMIC_FTRACE check	2024-03-26 18:21:13 -04:00
lib	parisc: Add ioread64_lo_hi() and iowrite64_lo_hi()	2022-02-23 12:03:04 +01:00
math-emu	parisc: math-emu: Fix fall-through warnings	2021-09-01 22:18:18 +02:00
mm	parisc: Fix handling off probe non-access faults	2022-04-08 14:23:56 +02:00
Kbuild	parisc: move core-y in arch/parisc/Makefile to arch/parisc/Kbuild	2021-08-30 10:18:25 +02:00
Kconfig	parisc: Allow CONFIG_64BIT with ARCH=parisc	2022-09-23 14:15:48 +02:00
Kconfig.debug	tracing: Refactor TRACE_IRQFLAGS_SUPPORT in Kconfig	2021-08-16 11:37:21 -04:00
Makefile	parisc: Fix KBUILD_IMAGE for self-extracting kernel	2021-12-08 09:04:55 +01:00
defpalo.conf	…
install.sh	parisc: Fix "make install" on newer debian releases	2021-12-08 09:04:55 +01:00
nm	…