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From: Juergen Gross <jgross@suse.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>,
	Dave Hansen <dave.hansen@intel.com>,
	Andy Lutomirski <luto@amacapital.net>,
	linux-arch@vger.kernel.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/8] x86/xen: Redefine XEN_ELFNOTE_INIT_P2M using PUD_SIZE * PTRS_PER_PUD
Date: Mon, 17 Jul 2017 07:45:24 +0200	[thread overview]
Message-ID: <de750662-faee-ce5b-526e-3f03ab87419d@suse.com> (raw)
In-Reply-To: <20170716225954.74185-4-kirill.shutemov@linux.intel.com>

On 17/07/17 00:59, Kirill A. Shutemov wrote:
> XEN_ELFNOTE_INIT_P2M has to be 512GB for both 4- and 5-level paging.
> (PUD_SIZE * PTRS_PER_PUD) would do this.
> 
> Unfortunately, we cannot use P4D_SIZE, which would fit here. With
> current headers structure it cannot be used in assembly, if p4d
> level is folded.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

Reviewed-by: Juergen Gross <jgross@suse.com>


Thanks,

Juergen

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  reply	other threads:[~2017-07-17  5:45 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-16 22:59 [PATCH 0/8] 5-level paging enabling for v4.14 Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 1/8] x86/dump_pagetables: Generalize address normalization Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 2/8] x86/dump_pagetables: Fix printout of p4d level Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 3/8] x86/xen: Redefine XEN_ELFNOTE_INIT_P2M using PUD_SIZE * PTRS_PER_PUD Kirill A. Shutemov
2017-07-17  5:45   ` Juergen Gross [this message]
2017-07-16 22:59 ` [PATCH 4/8] x86/mm: Rename tasksize_32bit/64bit to task_size_32bit/64bit Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 5/8] x86/mpx: Do not allow MPX if we have mappings above 47-bit Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 6/8] x86/mm: Prepare to expose larger address space to userspace Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 7/8] x86/mm: Allow userspace have mapping above 47-bit Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 8/8] x86: Enable 5-level paging support Kirill A. Shutemov
2017-07-20  7:57 ` [PATCH 0/8] 5-level paging enabling for v4.14 Kirill A. Shutemov

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