From: David Vrabel <david.vrabel@citrix.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org,
David Vrabel <david.vrabel@citrix.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH 0/4] xen: map foreign pages for shared rings by updating the PTEs directly
Date: Thu, 20 Oct 2011 11:45:15 +0100 [thread overview]
Message-ID: <1319107519-2253-1-git-send-email-david.vrabel@citrix.com> (raw)
This series of patches allows the vmalloc_sync_all() to be removed
from alloc_vm_area() by getting the hypervisor to update the PTEs (in
init_mm) directly rather than having the hypervisor look in the
current page tables to find the PTEs.
Once the hypervisor has updated the PTEs, the normal mechanism of
syncing the page tables after a fault works as expected.
This mechanism doesn't currently work on the ia64 port as that does
not support the GNTMAP_contains_pte flag.
Andrew, patch 4 (xen: map foreign pages for shared rings by updating
the PTEs directly) depends on patch 1 so it's probably best to go via
Konrad's Xen tree with your acked-by.
David
David Vrabel (4):
xen: use generic functions instead of xen_{alloc,free}_vm_area()
block: xen-blkback: use API provided by xenbus module to map rings
net: xen-netback: use API provided by xenbus module to map rings
xen: map foreign pages for shared rings by updating the PTEs directly
arch/ia64/include/asm/xen/grant_table.h | 29 -----------
arch/ia64/xen/grant-table.c | 62 ------------------------
arch/x86/include/asm/xen/grant_table.h | 7 ---
arch/x86/xen/grant-table.c | 2 +-
drivers/block/xen-blkback/common.h | 5 +--
drivers/block/xen-blkback/xenbus.c | 54 +++------------------
drivers/net/xen-netback/common.h | 11 ++--
drivers/net/xen-netback/netback.c | 80 +++++++------------------------
drivers/xen/xenbus/xenbus_client.c | 15 ++++--
include/linux/vmalloc.h | 2 +-
include/xen/grant_table.h | 1 -
mm/vmalloc.c | 27 +++++-----
12 files changed, 55 insertions(+), 240 deletions(-)
delete mode 100644 arch/ia64/include/asm/xen/grant_table.h
delete mode 100644 arch/x86/include/asm/xen/grant_table.h
--
1.7.2.5
next reply other threads:[~2011-10-20 10:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-20 10:45 David Vrabel [this message]
2011-10-20 10:45 ` [PATCH 1/4] xen: use generic functions instead of xen_{alloc,free}_vm_area() David Vrabel
2011-10-20 23:45 ` Konrad Rzeszutek Wilk
2011-10-20 10:45 ` [PATCH 2/4] block: xen-blkback: use API provided by xenbus module to map rings David Vrabel
2011-10-26 13:47 ` [Xen-devel] " Konrad Rzeszutek Wilk
2011-10-26 13:55 ` Jens Axboe
2011-10-20 10:45 ` [PATCH 3/4] net: xen-netback: " David Vrabel
2011-10-20 21:00 ` Konrad Rzeszutek Wilk
2011-10-20 10:45 ` [PATCH 4/4] xen: map foreign pages for shared rings by updating the PTEs directly David Vrabel
2011-10-20 23:44 ` [PATCH 0/4] " Konrad Rzeszutek Wilk
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