[RFC PATCH 10/10] PPC: BOOK3S: Disable/Enable TM looking at the ibm, pa-features device tree entry
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STALE4630d
From: Aneesh Kumar K.V <hidden>
Date: 2014-01-28 16:44:42
Also in:
kvm
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Runtime disable transactional memory feature looking at pa-features device tree entry. We need to do this so that we can run a kernel built with TM config in PR mode. For PR guest we provide a device tree entry with TM feature disabled in pa-features Signed-off-by: Aneesh Kumar K.V <redacted> --- arch/powerpc/kernel/prom.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index fa0ad8aafbcc..de8c2caf1024 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c@@ -160,6 +160,11 @@ static struct ibm_pa_feature { {CPU_FTR_NODSISRALIGN, 0, 0, 1, 1, 1}, {0, MMU_FTR_CI_LARGE_PAGE, 0, 1, 2, 0}, {CPU_FTR_REAL_LE, PPC_FEATURE_TRUE_LE, 5, 0, 0}, + /* + * We should use CPU_FTR_TM_COMP so that if we disable TM, it won't get + * enabled via device tree + */ + {CPU_FTR_TM_COMP, 0, 0, 22, 0, 0}, }; static void __init scan_features(unsigned long node, unsigned char *ftrs,
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1.8.5.3