linux-kernel - [PATCH] powerpc/64s: Don't read H_BLOCK_REMOVE characteristics in radix mode

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Message-Id: <20220520155721.10211-1-ldufour@linux.ibm.com>
Date:   Fri, 20 May 2022 17:57:21 +0200
From:   Laurent Dufour <ldufour@...ux.ibm.com>
To:     mpe@...erman.id.au, npiggin@...il.com
Cc:     aneesh.kumar@...ux.ibm.com, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] powerpc/64s: Don't read H_BLOCK_REMOVE characteristics in radix mode

There is no need to read the H_BLOCK_REMOVE characteristics when running in
Radix mode because this hcall is never called.

Signed-off-by: Laurent Dufour <ldufour@...ux.ibm.com>
---
 arch/powerpc/platforms/pseries/setup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index c9fcc30a0365..654d2b999c25 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -803,7 +803,8 @@ static void __init pSeries_setup_arch(void)
 
 	pseries_setup_security_mitigations();
 #ifdef CONFIG_PPC_64S_HASH_MMU
-	pseries_lpar_read_hblkrm_characteristics();
+	if (!radix_enabled())
+		pseries_lpar_read_hblkrm_characteristics();
 #endif
 
 	/* By default, only probe PCI (can be overridden by rtas_pci) */
-- 
2.36.1