Messages in this thread Patch in this message | | | From | Paul Cercueil <> | Subject | [PATCH 1/5] MIPS: Disallow CPU_SUPPORTS_HUGEPAGES for XPA,EVA | Date | Mon, 15 Jul 2019 17:39:59 -0400 |
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From: Daniel Silsby <dansilsby@gmail.com>
In preparation for 32-bit MIPS huge page support.
EVA,XPA are extended-addressing modes for 32-bit MIPS systems. Because huge pages aren't currently supported in 32-bit MIPS, this doesn't take any features away from EVA,XPA-enabled systems. However, the soon-to- come 32-bit MIPS huge page support doesn't yet support them.
This also disables CPU_SUPPORTS_HUGEPAGES for the small number of 32-bit MIPS CPUs from Alchemy/Netlogic that support a custom 36-bit extended addressing. It's unknown if they even support huge pages in hardware.
Signed-off-by: Daniel Silsby <dansilsby@gmail.com> Signed-off-by: Paul Cercueil <paul@crapouillou.net> --- arch/mips/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index d50fafd7bf3a..ff5f1314241e 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2110,6 +2110,7 @@ config CPU_SUPPORTS_ADDRWINCFG bool config CPU_SUPPORTS_HUGEPAGES bool + depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA)) config CPU_SUPPORTS_UNCACHED_ACCELERATED bool config MIPS_PGD_C0_CONTEXT -- 2.21.0.593.g511ec345e18
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