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Wed, 24 Nov 2021 12:53:54 -0800 (PST) From: Oleksandr Tyshchenko To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org Cc: Oleksandr Tyshchenko , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , Julien Grall 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 Message-Id: <1637787223-21129-2-git-send-email-olekstysh@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1637787223-21129-1-git-send-email-olekstysh@gmail.com> References: <1637787223-21129-1-git-send-email-olekstysh@gmail.com> X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1637787267472100001 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Oleksandr Tyshchenko 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 Reviewed-by: Boris Ostrovsky --- Changes RFC -> V2: - new patch, instead of "[RFC PATCH 1/2] arm64: mm: Make virt_addr_valid to check for pfn_vali= d 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-allo= c.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 =3D 0; i < alloc_pages; i++) { struct page *pg =3D virt_to_page(vaddr + PAGE_SIZE * i); =20 - BUG_ON(!virt_addr_valid(vaddr + PAGE_SIZE * i)); pg->zone_device_data =3D page_list; page_list =3D pg; list_count++; --=20 2.7.4