From: konrad.wilk@oracle•com (Konrad Rzeszutek Wilk)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 13/24] xen/arm: get privilege status
Date: Wed, 1 Aug 2012 10:39:46 -0400 [thread overview]
Message-ID: <20120801143946.GK7227@phenom.dumpdata.com> (raw)
In-Reply-To: <1343399630.25096.4.camel@zakaz.uk.xensource.com>
On Fri, Jul 27, 2012 at 03:33:50PM +0100, Ian Campbell wrote:
> On Fri, 2012-07-27 at 15:25 +0100, Stefano Stabellini wrote:
> > On Fri, 27 Jul 2012, Ian Campbell wrote:
> > > On Thu, 2012-07-26 at 16:33 +0100, Stefano Stabellini wrote:
> > > > Use Xen features to figure out if we are privileged.
> > > >
> > > > XENFEAT_dom0 was introduced by 23735 in xen-unstable.hg.
> > > >
> > > > Signed-off-by: Stefano Stabellini <stefano.stabellini@eu•citrix.com>
> > > > ---
> > > > arch/arm/xen/enlighten.c | 7 +++++++
> > > > include/xen/interface/features.h | 3 +++
> > > > 2 files changed, 10 insertions(+), 0 deletions(-)
> > > >
> > > > diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
> > > > index dc68074..2e013cf 100644
> > > > --- a/arch/arm/xen/enlighten.c
> > > > +++ b/arch/arm/xen/enlighten.c
> > > > @@ -2,6 +2,7 @@
> > > > #include <xen/interface/xen.h>
> > > > #include <xen/interface/memory.h>
> > > > #include <xen/platform_pci.h>
> > > > +#include <xen/features.h>
> > > > #include <asm/xen/hypervisor.h>
> > > > #include <asm/xen/hypercall.h>
> > > > #include <linux/module.h>
> > > > @@ -58,6 +59,12 @@ int __init xen_guest_init(void)
> > > > }
> > > > xen_domain_type = XEN_HVM_DOMAIN;
> > > >
> > > > + xen_setup_features();
> > > > + if (xen_feature(XENFEAT_dom0))
> > > > + xen_start_info->flags |= SIF_INITDOMAIN|SIF_PRIVILEGED;
> > > > + else
> > > > + xen_start_info->flags &= ~(SIF_INITDOMAIN|SIF_PRIVILEGED);
> > >
> > > What happens here on platforms prior to hypervisor changeset 23735?
> >
> > It wouldn't work.
> > Considering that we are certainly not going to backport ARM support to
> > Xen 4.1, and that both ARM and XENFEAT_dom0 will be present in Xen 4.2,
> > do we really need to support the Xen unstable changesets between ARM was
> > introduced and XENFEAT_dom0 appeared?
So should it just panic and say "AAAAAAH"?
>
> Sorry, I missed the "arm" in the path.
>
> Ian.
>
>
next prev parent reply other threads:[~2012-08-01 14:39 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-26 15:33 [PATCH 00/24] Introduce Xen support on ARM Stefano Stabellini
2012-07-26 15:33 ` [PATCH 01/24] arm: initial Xen support Stefano Stabellini
2012-07-26 16:30 ` [Xen-devel] " Konrad Rzeszutek Wilk
2012-07-27 11:56 ` Stefano Stabellini
2012-08-01 10:42 ` Konrad Rzeszutek Wilk
2012-08-06 10:55 ` Stefano Stabellini
2012-08-01 18:27 ` Rob Herring
2012-08-02 7:35 ` Ian Campbell
2012-08-02 14:13 ` [Xen-devel] " Konrad Rzeszutek Wilk
2012-08-06 10:46 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 02/24] xen/arm: hypercalls Stefano Stabellini
2012-07-26 16:33 ` [Xen-devel] " Konrad Rzeszutek Wilk
2012-07-27 9:17 ` Ian Campbell
2012-07-27 13:02 ` Stefano Stabellini
2012-07-27 13:18 ` Ian Campbell
2012-07-27 13:41 ` Stefano Stabellini
2012-07-27 14:21 ` Russell King - ARM Linux
2012-07-27 14:36 ` Stefano Stabellini
2012-07-27 14:39 ` Ian Campbell
2012-07-27 14:59 ` Russell King - ARM Linux
2012-07-26 16:56 ` David Vrabel
2012-07-26 17:19 ` Stefano Stabellini
2012-07-27 9:00 ` Ian Campbell
2012-07-26 19:19 ` Christopher Covington
2012-07-27 9:19 ` Ian Campbell
2012-07-27 12:56 ` Christopher Covington
2012-07-27 13:57 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 03/24] xen/arm: page.h definitions Stefano Stabellini
2012-07-26 16:36 ` [Xen-devel] " Konrad Rzeszutek Wilk
2012-07-27 13:47 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 04/24] xen/arm: sync_bitops Stefano Stabellini
2012-07-26 16:37 ` [Xen-devel] " Konrad Rzeszutek Wilk
2012-07-27 9:28 ` Ian Campbell
2012-08-01 14:35 ` Konrad Rzeszutek Wilk
2012-08-01 16:07 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 05/24] xen/arm: empty implementation of grant_table arch specific functions Stefano Stabellini
2012-08-01 14:16 ` Konrad Rzeszutek Wilk
2012-08-01 15:46 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 06/24] xen: missing includes Stefano Stabellini
2012-07-27 6:57 ` [Xen-devel] " Jan Beulich
2012-07-27 16:47 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 07/24] xen/arm: Xen detection and shared_info page mapping Stefano Stabellini
2012-07-27 9:36 ` Ian Campbell
2012-07-27 14:48 ` Stefano Stabellini
2012-07-27 14:51 ` Ian Campbell
2012-08-01 14:19 ` Konrad Rzeszutek Wilk
2012-08-01 15:45 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 08/24] xen/arm: Introduce xen_pfn_t for pfn and mfn types Stefano Stabellini
2012-08-01 14:22 ` Konrad Rzeszutek Wilk
2012-08-01 15:50 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 09/24] xen/arm: compile and run xenbus Stefano Stabellini
2012-08-01 14:28 ` Konrad Rzeszutek Wilk
2012-08-06 11:17 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 10/24] xen: do not compile manage, balloon, pci, acpi and cpu_hotplug on ARM Stefano Stabellini
2012-07-27 7:01 ` [Xen-devel] " Jan Beulich
2012-07-27 16:51 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 11/24] xen/arm: introduce CONFIG_XEN " Stefano Stabellini
2012-08-01 14:34 ` [Xen-devel] " Konrad Rzeszutek Wilk
2012-07-26 15:33 ` [PATCH 12/24] xen/arm: Introduce xen_guest_init Stefano Stabellini
2012-07-27 9:42 ` Ian Campbell
2012-07-27 15:54 ` Stefano Stabellini
2012-07-27 16:11 ` Ian Campbell
2012-08-01 14:38 ` Konrad Rzeszutek Wilk
2012-07-26 15:33 ` [PATCH 13/24] xen/arm: get privilege status Stefano Stabellini
2012-07-27 9:44 ` Ian Campbell
2012-07-27 14:25 ` Stefano Stabellini
2012-07-27 14:33 ` Ian Campbell
2012-08-01 14:39 ` Konrad Rzeszutek Wilk [this message]
2012-08-01 16:21 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 14/24] xen/arm: initialize grant_table on ARM Stefano Stabellini
2012-08-01 14:40 ` Konrad Rzeszutek Wilk
2012-08-01 17:08 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 15/24] xen/arm: receive Xen events " Stefano Stabellini
2012-08-01 14:44 ` Konrad Rzeszutek Wilk
2012-08-06 10:31 ` Stefano Stabellini
2012-07-26 15:33 ` [PATCH 16/24] xen/arm: implement alloc/free_xenballooned_pages with alloc_pages/kfree Stefano Stabellini
2012-07-26 15:33 ` [PATCH 17/24] xen: allow privcmd for HVM guests Stefano Stabellini
2012-07-27 7:04 ` [Xen-devel] " Jan Beulich
2012-07-27 14:10 ` Stefano Stabellini
2012-08-01 14:47 ` Konrad Rzeszutek Wilk
2012-07-26 15:34 ` [PATCH 18/24] xen/arm: compile blkfront and blkback Stefano Stabellini
2012-07-27 9:48 ` Ian Campbell
2012-07-27 16:25 ` Stefano Stabellini
2012-08-01 14:48 ` Konrad Rzeszutek Wilk
2012-08-01 16:19 ` Stefano Stabellini
2012-07-26 15:34 ` [PATCH 19/24] xen/arm: compile netback Stefano Stabellini
2012-07-26 15:34 ` [PATCH 20/24] xen: update xen_add_to_physmap interface Stefano Stabellini
2012-08-01 14:52 ` Konrad Rzeszutek Wilk
2012-08-01 16:18 ` Stefano Stabellini
2012-08-01 18:19 ` Mukesh Rathor
2012-07-26 15:34 ` [PATCH 21/24] arm/v2m: initialize arch_timers even if v2m_timer is not present Stefano Stabellini
2012-08-01 14:52 ` Konrad Rzeszutek Wilk
2012-08-01 16:06 ` Stefano Stabellini
2012-07-26 15:34 ` [PATCH 22/24] ARM: enable earlyprintk=xen Stefano Stabellini
2012-07-26 15:34 ` [PATCH 23/24] hvc_xen: allow dom0_write_console for HVM guests Stefano Stabellini
2012-08-01 14:54 ` Konrad Rzeszutek Wilk
2012-08-01 16:04 ` Stefano Stabellini
2012-07-26 15:34 ` [PATCH 24/24] [HACK] xen/arm: implement xen_remap_domain_mfn_range Stefano Stabellini
2012-08-01 14:56 ` Konrad Rzeszutek Wilk
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