[Skiboot] [PATCH] hdat: Disable TM on Power9 DD 2.1
stewart at linux.vnet.ibm.com
Wed Oct 11 07:43:12 AEDT 2017
Michael Ellerman <mpe at ellerman.id.au> writes:
> Update pa_features_p9 to disable TM (Transactional Memory). On DD 2.1
> TM is not usable by Linux without other workarounds, so skiboot must
> disable it.
> The presence of TM is communicated by setting bit 7 of byte 22 in the
> pa-features array. As no other bits are set in that byte, we currently
> have a value of 0x80. To disable TM we set bit 7 to 0, leaving a value
> of 0x0.
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> hdata/cpu-common.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Merged as of 48b8b46444f3f6b600012fdaa2fcdf9a52b3a6af
OPAL Architect, IBM.
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