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From: Joerg Roedel <jroedel@suse.de>
To: Andy Lutomirski <luto@kernel.org>
Cc: Joerg Roedel <joro@8bytes.org>, X86 ML <x86@kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Peter Zijlstra <peterz@infradead.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Arnd Bergmann <arnd@arndb.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Vlastimil Babka <vbabka@suse.cz>,
	Michal Hocko <mhocko@kernel.org>,
	Matthew Wilcox <willy@infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Linux ACPI <linux-acpi@vger.kernel.org>,
	linux-arch <linux-arch@vger.kernel.org>,
	Linux-MM <linux-mm@kvack.org>
Subject: Re: [PATCH v2 0/7] mm: Get rid of vmalloc_sync_(un)mappings()
Date: Fri, 15 May 2020 15:03:13 +0200
Message-ID: <20200515130313.GI8135@suse.de> (raw)
In-Reply-To: <CALCETrW1Y2Q7dWwv4X7PHf3yxOGMcDaBG0NK7BWPAR=FiqsoPQ@mail.gmail.com>

On Wed, May 13, 2020 at 09:01:04AM -0700, Andy Lutomirski wrote:
> I would love to see a followup patch that preallocates the vmalloc
> region on 64-bit and compiles out pgd_list and all of the associated
> gunk.

Looked a bit into this, with pre-allocation and a few more changes all
but one users of pgd_list and pgd_lock can be get rid of on x86-64. But
there is the XEN-PV code which also needs to traverse pgd_list, and I am
not sure how to get rid of that.

Regards,

	Joerg

      parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-13 15:21 Joerg Roedel
2020-05-13 15:21 ` [PATCH v2 1/7] mm: Add functions to track page directory modifications Joerg Roedel
2020-05-13 15:21 ` [PATCH v2 2/7] mm/vmalloc: Track which page-table levels were modified Joerg Roedel
2020-05-13 15:21 ` [PATCH v2 3/7] mm/ioremap: " Joerg Roedel
2020-05-13 15:21 ` [PATCH v2 4/7] x86/mm/64: Implement arch_sync_kernel_mappings() Joerg Roedel
2020-05-13 15:21 ` [PATCH v2 5/7] x86/mm/32: " Joerg Roedel
2020-05-13 15:21 ` [PATCH v2 6/7] mm: Remove vmalloc_sync_(un)mappings() Joerg Roedel
2020-05-13 15:21 ` [PATCH v2 7/7] x86/mm: Remove vmalloc faulting Joerg Roedel
2020-05-13 15:46   ` Andy Lutomirski
2020-05-13 16:01 ` [PATCH v2 0/7] mm: Get rid of vmalloc_sync_(un)mappings() Andy Lutomirski
2020-05-14 14:49   ` Joerg Roedel
2020-05-15 13:03   ` Joerg Roedel [this message]

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