tree 935852aa0f2bee2d68d704d8007a2524189a3f4f parent 3e88a579d05e1bb6c51d88f0936e372895edb8ff author Deepak Saxena <[EMAIL PROTECTED]> Mon, 29 Aug 2005 22:54:53 +0100 committer Russell King <[EMAIL PROTECTED]> Mon, 29 Aug 2005 22:54:53 +0100
[ARM] 2853/1: Make alloc_init_supersection() work with 36-bit mappings Patch from Deepak Saxena Working on adding support for 36-bit static mappings for ARMv6 and Intel's XSC3 core and noticed that alloc_init_supersection currently increments the phys addr by 1MB on each of the 16 iterations and then forces alignment to supersection size (16MB). This is really uneeded b/c we have already forced the phys address to be 16MB aligned in create_mapping(). Furthermore, this breaks 36-bit addressing b/c bits [23:20] of the PMD contain bits [35:32] of the physical address and the masking causes us to loose those bits thus ending up with an incorrect virt -> phys translation. The other option is to have an alloc_init_supersection36. Tested on Intel IXP2350 CPU with 36-bit static I/O mappings. Signed-off-by: Deepak Saxena <[EMAIL PROTECTED]> Signed-off-by: Russell King <[EMAIL PROTECTED]> arch/arm/mm/mm-armv.c | 4 +--- 1 files changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c --- a/arch/arm/mm/mm-armv.c +++ b/arch/arm/mm/mm-armv.c @@ -275,11 +275,9 @@ alloc_init_supersection(unsigned long vi int i; for (i = 0; i < 16; i += 1) { - alloc_init_section(virt, phys & SUPERSECTION_MASK, - prot | PMD_SECT_SUPER); + alloc_init_section(virt, phys, prot | PMD_SECT_SUPER); virt += (PGDIR_SIZE / 2); - phys += (PGDIR_SIZE / 2); } } - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html