Xen-Devel Archive on lore.kernel.org
 help / color / Atom feed
From: Pavel Tatashin <pasha.tatashin@soleen.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Stefan Agner <stefan@agner.ch>,
	Russell King - ARM Linux admin <linux@armlinux.org.uk>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Will Deacon <will@kernel.org>,
	boris.ostrovsky@oracle.com, Sasha Levin <sashal@kernel.org>,
	Stefano Stabellini <sstabellini@kernel.org>,
	James Morris <jmorris@namei.org>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	xen-devel@lists.xenproject.org,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	Julien Grall <julien@xen.org>,
	Marc Zyngier <marc.zyngier@arm.com>,
	alexios.zavras@intel.com, Thomas Gleixner <tglx@linutronix.de>,
	allison@lohutok.net, jgross@suse.com, steve.capper@arm.com,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	LKML <linux-kernel@vger.kernel.org>,
	James Morse <james.morse@arm.com>,
	info@metux.net
Subject: Re: [Xen-devel] [PATCH 1/3] arm/arm64/xen: use C inlines for privcmd_call
Date: Wed, 4 Dec 2019 12:55:31 -0500
Message-ID: <CA+CK2bDV5pUYb5c-mkA9heE-CMg1MZdC=zz6zkDJDUZuuUpOmA@mail.gmail.com> (raw)
In-Reply-To: <e785a585-8b71-8a49-285e-2bcb1437500b@citrix.com>

On Fri, Nov 29, 2019 at 10:10 AM Andrew Cooper
<andrew.cooper3@citrix.com> wrote:
>
> On 29/11/2019 15:05, Julien Grall wrote:
> > Hi,
> >
> > On 27/11/2019 18:44, Pavel Tatashin wrote:
> >> diff --git a/arch/arm64/include/asm/xen/hypercall.h
> >> b/arch/arm64/include/asm/xen/hypercall.h
> >> index 3522cbaed316..1a74fb28607f 100644
> >> --- a/arch/arm64/include/asm/xen/hypercall.h
> >> +++ b/arch/arm64/include/asm/xen/hypercall.h
> >> @@ -1 +1,29 @@
> >> +#ifndef _ASM_ARM64_XEN_HYPERCALL_H
> >> +#define _ASM_ARM64_XEN_HYPERCALL_H
> >>   #include <xen/arm/hypercall.h>
> >> +#include <linux/uaccess.h>
> >> +
> >> +static inline long privcmd_call(unsigned int call, unsigned long a1,
> >> +                unsigned long a2, unsigned long a3,
> >> +                unsigned long a4, unsigned long a5)
> >
> > I realize that privcmd_call is the only hypercall using Software PAN
> > at the moment. However, dm_op needs the same as hypercall will be
> > issued from userspace as well.
>
> And dm_op() won't be the only example as we continue in cleaning up the
> gaping hole that is privcmd.
>
> > So I was wondering whether we should create a generic function (e.g.
> > do_xen_hypercall() or do_xen_user_hypercall()) to cover the two
> > hypercalls?
>
> Probably a good idea.

It sounds good to me, but let's keep it outside of this series.

Thank you,
Pasha

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel

  reply index

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-27 18:44 [Xen-devel] [PATCH 0/3] Use C inlines for uaccess Pavel Tatashin
2019-11-27 18:44 ` [Xen-devel] [PATCH 1/3] arm/arm64/xen: use C inlines for privcmd_call Pavel Tatashin
2019-11-29 15:05   ` Julien Grall
2019-11-29 15:09     ` Andrew Cooper
2019-12-04 17:55       ` Pavel Tatashin [this message]
2019-12-04 17:58     ` Pavel Tatashin
2019-11-27 18:44 ` [Xen-devel] [PATCH 2/3] arm64: remove uaccess_ttbr0 asm macros from cache functions Pavel Tatashin
2019-11-28 14:51   ` Mark Rutland
2019-12-04 20:50     ` Pavel Tatashin
2019-11-27 18:44 ` [Xen-devel] [PATCH 3/3] arm64: remove the rest of asm-uaccess.h Pavel Tatashin
2019-11-27 18:46 ` [Xen-devel] [PATCH 0/3] Use C inlines for uaccess Pavel Tatashin
  -- strict thread matches above, loose matches on Subject: below --
2019-11-21 18:48 Pavel Tatashin
2019-11-21 18:48 ` [Xen-devel] [PATCH 1/3] arm/arm64/xen: use C inlines for privcmd_call Pavel Tatashin
2019-11-22  0:22   ` Russell King - ARM Linux admin
2019-11-22  0:30     ` Pavel Tatashin
2019-11-22  0:34       ` Russell King - ARM Linux admin
2019-11-22  0:35         ` Russell King - ARM Linux admin
2019-11-22  0:39           ` Pavel Tatashin
2019-11-22  0:53             ` Russell King - ARM Linux admin

Reply instructions:

You may reply publically 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='CA+CK2bDV5pUYb5c-mkA9heE-CMg1MZdC=zz6zkDJDUZuuUpOmA@mail.gmail.com' \
    --to=pasha.tatashin@soleen.com \
    --cc=alexios.zavras@intel.com \
    --cc=allison@lohutok.net \
    --cc=andrew.cooper3@citrix.com \
    --cc=boris.ostrovsky@oracle.com \
    --cc=catalin.marinas@arm.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=info@metux.net \
    --cc=james.morse@arm.com \
    --cc=jgross@suse.com \
    --cc=jmorris@namei.org \
    --cc=julien@xen.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@armlinux.org.uk \
    --cc=marc.zyngier@arm.com \
    --cc=mark.rutland@arm.com \
    --cc=sashal@kernel.org \
    --cc=sstabellini@kernel.org \
    --cc=stefan@agner.ch \
    --cc=steve.capper@arm.com \
    --cc=tglx@linutronix.de \
    --cc=vladimir.murzin@arm.com \
    --cc=will@kernel.org \
    --cc=xen-devel@lists.xenproject.org \
    --cc=yamada.masahiro@socionext.com \
    /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

Xen-Devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/xen-devel/0 xen-devel/git/0.git
	git clone --mirror https://lore.kernel.org/xen-devel/1 xen-devel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 xen-devel xen-devel/ https://lore.kernel.org/xen-devel \
		xen-devel@lists.xenproject.org xen-devel@lists.xen.org
	public-inbox-index xen-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.xenproject.lists.xen-devel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git