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powerpc/mm: Fix size of allocated PGDIR

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Commit 6b0e82791b ("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 <linux@roeck-us.net>
Fixes: 6b0e82791b ("powerpc/e500: switch to 64 bits PGD on 85xx (32 bits)")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/1cdaacb391cbd3e0240f0e0faf691202874e9422.1723109462.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2024-08-08 11:32:47 +02:00 committed by Michael Ellerman
parent 06ce0af341
commit e7a9af8c93
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/mm/init-common.c
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@ -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