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Date: Mon, 18 Sep 2017 13:55:36 +0300 From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com> To: Ingo Molnar <mingo@...hat.com>, Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Andy Lutomirski <luto@...capital.net>, Cyrill Gorcunov <gorcunov@...nvz.org>, Borislav Petkov <bp@...e.de>, linux-mm@...ck.org, linux-kernel@...r.kernel.org, "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>, Minchan Kim <minchan@...nel.org>, Nitin Gupta <ngupta@...are.org>, Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> Subject: [PATCHv7 02/19] mm/zsmalloc: Prepare to variable MAX_PHYSMEM_BITS With boot-time switching between paging mode we will have variable MAX_PHYSMEM_BITS. Let's use the maximum variable possible for CONFIG_X86_5LEVEL=y configuration to define zsmalloc data structures. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com> Cc: Minchan Kim <minchan@...nel.org> Cc: Nitin Gupta <ngupta@...are.org> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com> --- mm/zsmalloc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 7c38e850a8fc..fe22661f2fe5 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -93,7 +93,13 @@ #define MAX_PHYSMEM_BITS BITS_PER_LONG #endif #endif + +#ifdef CONFIG_X86_5LEVEL +/* MAX_PHYSMEM_BITS is variable, use maximum value here */ +#define _PFN_BITS (52 - PAGE_SHIFT) +#else #define _PFN_BITS (MAX_PHYSMEM_BITS - PAGE_SHIFT) +#endif /* * Memory for allocating for handle keeps object position by -- 2.14.1
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