Commit 35c1c7c0 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

powerpc/vdso: Remove NULL termination element in vdso_pagelist 



No need of a NULL last element in pagelists, install_special_mapping()
knows how long the list is.

Remove that element.

Signed-off-by: default avatarChristophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/e58d95ab859e3cbc9bae3c9ce2959e17d2864f5d.1601197618.git.christophe.leroy@csgroup.eu
parent abcdbd03

arch/powerpc/kernel/vdso.c

+2 −4
Original line number Diff line number Diff line
@@ -743,7 +743,7 @@ static int __init vdso_init(void) 


#ifdef CONFIG_VDSO32

	/* Make sure pages are in the correct state */

	vdso32_pagelist = kcalloc(vdso32_pages + 2, sizeof(struct page *),

	vdso32_pagelist = kcalloc(vdso32_pages + 1, sizeof(struct page *),

				  GFP_KERNEL);

	BUG_ON(vdso32_pagelist == NULL);

	for (i = 0; i < vdso32_pages; i++) {
@@ -752,11 +752,10 @@ static int __init vdso_init(void) 
		vdso32_pagelist[i] = pg;

	}

	vdso32_pagelist[i++] = virt_to_page(vdso_data);

	vdso32_pagelist[i] = NULL;

#endif



#ifdef CONFIG_PPC64

	vdso64_pagelist = kcalloc(vdso64_pages + 2, sizeof(struct page *),

	vdso64_pagelist = kcalloc(vdso64_pages + 1, sizeof(struct page *),

				  GFP_KERNEL);

	BUG_ON(vdso64_pagelist == NULL);

	for (i = 0; i < vdso64_pages; i++) {
@@ -765,7 +764,6 @@ static int __init vdso_init(void) 
		vdso64_pagelist[i] = pg;

	}

	vdso64_pagelist[i++] = virt_to_page(vdso_data);

	vdso64_pagelist[i] = NULL;

#endif /* CONFIG_PPC64 */



	smp_wmb();