From e7a9af8c93aa9f408f9972809b642faeec5287e1 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 8 Aug 2024 11:32:47 +0200 Subject: [PATCH] powerpc/mm: Fix size of allocated PGDIR Commit 6b0e82791bd0 ("powerpc/e500: switch to 64 bits PGD on 85xx (32 bits)") increased the size of PGD entries but failed to increase the PGD directory. Use the size of pgd_t instead of the size of pointers to calculate the allocated size. Reported-by: Guenter Roeck Fixes: 6b0e82791bd0 ("powerpc/e500: switch to 64 bits PGD on 85xx (32 bits)") Signed-off-by: Christophe Leroy Tested-by: Guenter Roeck Signed-off-by: Michael Ellerman Link: https://msgid.link/1cdaacb391cbd3e0240f0e0faf691202874e9422.1723109462.git.christophe.leroy@csgroup.eu --- arch/powerpc/mm/init-common.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c index 9b4a675eb8f87..2978fcbe307ea 100644 --- a/arch/powerpc/mm/init-common.c +++ b/arch/powerpc/mm/init-common.c @@ -73,7 +73,7 @@ void setup_kup(void) #define CTOR(shift) static void ctor_##shift(void *addr) \ { \ - memset(addr, 0, sizeof(void *) << (shift)); \ + memset(addr, 0, sizeof(pgd_t) << (shift)); \ } CTOR(0); CTOR(1); CTOR(2); CTOR(3); CTOR(4); CTOR(5); CTOR(6); CTOR(7); @@ -117,7 +117,7 @@ EXPORT_SYMBOL_GPL(pgtable_cache); /* used by kvm_hv module */ void pgtable_cache_add(unsigned int shift) { char *name; - unsigned long table_size = sizeof(void *) << shift; + unsigned long table_size = sizeof(pgd_t) << shift; unsigned long align = table_size; /* When batching pgtable pointers for RCU freeing, we store -- 2.39.5