LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Oleksandr Tyshchenko <olekstysh@gmail.com>
To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	Juergen Gross <jgross@suse.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>
Subject: [PATCH V3 1/6] xen/unpopulated-alloc: Drop check for virt_addr_valid() in fill_list()
Date: Wed, 24 Nov 2021 22:53:38 +0200	[thread overview]
Message-ID: <1637787223-21129-2-git-send-email-olekstysh@gmail.com> (raw)
In-Reply-To: <1637787223-21129-1-git-send-email-olekstysh@gmail.com>

From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>

If memremap_pages() succeeds the range is guaranteed to have proper page
table, there is no need for an additional virt_addr_valid() check.

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
---
Changes RFC -> V2:
   - new patch, instead of
     "[RFC PATCH 1/2] arm64: mm: Make virt_addr_valid to check for pfn_valid again"

Changes V2 -> V3:
   - add Boris' R-b
---
 drivers/xen/unpopulated-alloc.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/xen/unpopulated-alloc.c b/drivers/xen/unpopulated-alloc.c
index 87e6b7d..a03dc5b 100644
--- a/drivers/xen/unpopulated-alloc.c
+++ b/drivers/xen/unpopulated-alloc.c
@@ -85,7 +85,6 @@ static int fill_list(unsigned int nr_pages)
 	for (i = 0; i < alloc_pages; i++) {
 		struct page *pg = virt_to_page(vaddr + PAGE_SIZE * i);
 
-		BUG_ON(!virt_addr_valid(vaddr + PAGE_SIZE * i));
 		pg->zone_device_data = page_list;
 		page_list = pg;
 		list_count++;
-- 
2.7.4


  reply	other threads:[~2021-11-24 20:54 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-24 20:53 [PATCH V3 0/6] xen: Add support of extended regions (safe ranges) on Arm Oleksandr Tyshchenko
2021-11-24 20:53 ` Oleksandr Tyshchenko [this message]
2021-11-24 20:53 ` [PATCH V3 2/6] arm/xen: Switch to use gnttab_setup_auto_xlat_frames() for DT Oleksandr Tyshchenko
2021-11-24 23:35   ` Stefano Stabellini
2021-11-25 11:41     ` Oleksandr
2021-11-24 20:53 ` [PATCH V3 3/6] xen/balloon: Bring alloc(free)_xenballooned_pages helpers back Oleksandr Tyshchenko
2021-11-24 23:36   ` Stefano Stabellini
2021-11-24 20:53 ` [PATCH V3 4/6] xen/unpopulated-alloc: Add mechanism to use Xen resource Oleksandr Tyshchenko
2021-11-25  1:03   ` Stefano Stabellini
2021-11-25 14:01     ` Oleksandr
2021-12-07 23:36       ` Stefano Stabellini
2021-12-09  0:04         ` Oleksandr
2021-12-09  0:59           ` Stefano Stabellini
2021-11-26 15:17   ` Boris Ostrovsky
2021-11-26 15:23     ` Oleksandr
2021-11-24 20:53 ` [PATCH V3 5/6] arm/xen: Read extended regions from DT and init " Oleksandr Tyshchenko
2021-11-25  1:07   ` Stefano Stabellini
2021-11-24 20:53 ` [PATCH V3 6/6] dt-bindings: xen: Clarify "reg" purpose Oleksandr Tyshchenko
2021-11-25  1:09   ` Stefano Stabellini
2021-11-25 12:21     ` Oleksandr
2021-11-29  1:01   ` Rob Herring

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1637787223-21129-2-git-send-email-olekstysh@gmail.com \
    --to=olekstysh@gmail.com \
    --cc=boris.ostrovsky@oracle.com \
    --cc=jgross@suse.com \
    --cc=julien@xen.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=oleksandr_tyshchenko@epam.com \
    --cc=sstabellini@kernel.org \
    --cc=xen-devel@lists.xenproject.org \
    --subject='Re: [PATCH V3 1/6] xen/unpopulated-alloc: Drop check for virt_addr_valid() in fill_list()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).