|To:||unlisted-recipients:; (no To-header on input)|
|Subject:||Re: [PATCH] Fix swap entry for MIPS32 36-bit physical address|
|From:||Sergei Shtylyov <email@example.com>|
|Date:||Sat, 08 Apr 2006 01:19:11 +0400|
|Cc:||firstname.lastname@example.org, Ralf Baechle <email@example.com>, Pete Popov <firstname.lastname@example.org>, Jordan Crouse <email@example.com>|
|Organization:||MontaVista Software Inc.|
|References:||<B482D8AA59BF244F99AFE7520D74BF9609D4F2@server1.RightHand.righthandtech.com> <4433C9EE.firstname.lastname@example.org> <4436C301.email@example.com>|
|User-agent:||Mozilla/5.0 (X11; U; Linux i686; rv:1.7.2) Gecko/20040803|
Hello. Sergei Shtylyov wrote:
Additionally, PTEs in MIPS32R2 should have the same layout for the 36-bit physical address case as in MIPS32R1, according to the architecture manuals -- so, fix the #ifdef's.
I've decided to tead off that part (incomplete anyway) and move it to a separate patch which I'll post shortly.
I'm really not sure that we need that #if defined(CONFIG_CPU_MIPS32) -- it renders CONFIG_64BIT_PHYS_ADDR non-working on all other 32-bit CPUs for which Kconfig entry claims that this support exists:
config 64BIT_PHYS_ADDR bool "Support for 64-bit physical address space"depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
At least RM7000 has the same PTE layout as MIPS32, I guess the others also do. I suspect that the intent was to limit this option to the Alchemy CPUs where it's *really* necessary?
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