From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/6] arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pages
Date: Thu, 09 Oct 2014 13:59:04 +0100 [thread overview]
Message-ID: <54368698.50302@arm.com> (raw)
In-Reply-To: <1410990981-665-2-git-send-email-ard.biesheuvel@linaro.org>
On 17/09/14 22:56, Ard Biesheuvel wrote:
> Pass __GFP_ZERO to __get_free_pages() instead of calling memset()
> explicitly.
>
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
M.
> ---
> arch/arm/kvm/mmu.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
> index c68ec28f17c3..152e0f896e63 100644
> --- a/arch/arm/kvm/mmu.c
> +++ b/arch/arm/kvm/mmu.c
> @@ -528,11 +528,10 @@ int kvm_alloc_stage2_pgd(struct kvm *kvm)
> return -EINVAL;
> }
>
> - pgd = (pgd_t *)__get_free_pages(GFP_KERNEL, S2_PGD_ORDER);
> + pgd = (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, S2_PGD_ORDER);
> if (!pgd)
> return -ENOMEM;
>
> - memset(pgd, 0, PTRS_PER_S2_PGD * sizeof(pgd_t));
> kvm_clean_pgd(pgd);
> kvm->arch.pgd = pgd;
>
>
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2014-10-09 12:59 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-17 21:56 [PATCH 0/6] KVM: handling of MMIO pass-through regions Ard Biesheuvel
2014-09-17 21:56 ` [PATCH 1/6] arm/arm64: KVM: use __GFP_ZERO not memset() to get zeroed pages Ard Biesheuvel
2014-09-29 13:02 ` Christoffer Dall
2014-10-09 12:59 ` Marc Zyngier [this message]
2014-09-17 21:56 ` [PATCH 2/6] arm/arm64: KVM: fix potential NULL dereference in user_mem_abort() Ard Biesheuvel
2014-09-29 13:01 ` Christoffer Dall
2014-10-09 13:05 ` Marc Zyngier
2014-10-09 13:10 ` Ard Biesheuvel
2014-10-09 13:11 ` Christoffer Dall
2014-10-09 13:13 ` Marc Zyngier
2014-09-17 21:56 ` [PATCH 3/6] arm/arm64: KVM: add 'writable' parameter to kvm_phys_addr_ioremap Ard Biesheuvel
2014-09-25 0:03 ` Mario Smarduch
2014-09-29 12:23 ` Christoffer Dall
2014-09-29 18:02 ` Mario Smarduch
2014-09-29 18:26 ` Christoffer Dall
2014-09-29 12:59 ` Christoffer Dall
2014-10-09 13:07 ` Marc Zyngier
2014-10-09 13:11 ` Ard Biesheuvel
2014-10-09 13:46 ` Marc Zyngier
2014-09-17 21:56 ` [PATCH 4/6] ARM: kvm: define PAGE_S2_DEVICE as read-only by default Ard Biesheuvel
2014-09-29 13:05 ` Christoffer Dall
2014-10-09 13:10 ` Marc Zyngier
2014-09-17 21:56 ` [PATCH 5/6] arm64: " Ard Biesheuvel
2014-09-29 13:06 ` Christoffer Dall
2014-09-29 13:34 ` Will Deacon
2014-10-09 13:10 ` Marc Zyngier
2014-09-17 21:56 ` [PATCH 6/6] arm/arm64: KVM: map MMIO regions at creation time Ard Biesheuvel
2014-09-29 12:52 ` Christoffer Dall
2014-09-29 13:07 ` [PATCH 0/6] KVM: handling of MMIO pass-through regions Christoffer Dall
2014-10-01 5:36 ` Ard Biesheuvel
2014-10-10 11:08 ` Christoffer Dall
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=54368698.50302@arm.com \
--to=marc.zyngier@arm.com \
--cc=linux-arm-kernel@lists.infradead.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).