From: Benjamin Herrenschmidt Date: Tue, 5 Jul 2016 05:03:56 +0000 (+1000) Subject: powerpc/mm/hash64: Don't test for machine type to detect HEA special case X-Git-Tag: v4.14-rc1~2761^2~29 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2b4e3ad8f5790cae6e0356c5fc200588bd2c915c;p=platform%2Fkernel%2Flinux-rpi.git powerpc/mm/hash64: Don't test for machine type to detect HEA special case Instead, check for FW_FEATURE_SPLPAR. This should be roughtly equivalent as all pseries machiens that can have an HEA also support SPLPAR and no other machine type does. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index a9472ea..eab3074 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -527,7 +527,8 @@ static bool might_have_hea(void) * we will never see an HEA ethernet device. */ #ifdef CONFIG_IBMEBUS - return !cpu_has_feature(CPU_FTR_ARCH_207S); + return !cpu_has_feature(CPU_FTR_ARCH_207S) && + !firmware_has_feature(FW_FEATURE_SPLPAR); #else return false; #endif @@ -593,7 +594,7 @@ found: * would stop us accessing the HEA ethernet. So if we * have the chance of ever seeing one, stay at 4k. */ - if (!might_have_hea() || !machine_is(pseries)) + if (!might_have_hea()) mmu_io_psize = MMU_PAGE_64K; } else mmu_ci_restrictions = 1;