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powerpc/mm/hash64: Don't test for machine type to detect HEA special case

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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 <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2016-07-05 15:03:56 +10:00 committed by Michael Ellerman
parent 5556ecf5e9
commit 2b4e3ad8f5
1 changed files with 3 additions and 2 deletions
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5
arch/powerpc/mm/hash_utils_64.c
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@ -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;