From: Juergen Gross <jgross@suse.com>
To: xen-devel@lists.xenproject.org
Cc: Juergen Gross <jgross@suse.com>,
sstabellini@kernel.org, wei.liu2@citrix.com,
George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com,
ian.jackson@eu.citrix.com, tim@xen.org, julien.grall@arm.com,
jbeulich@suse.com, dgdegra@tycho.nsa.gov
Subject: [PATCH v7 06/16] xen: add max possible mfn to struct xen_sysctl_physinfo
Date: Tue, 19 Sep 2017 11:58:42 +0200 [thread overview]
Message-ID: <20170919095852.15785-7-jgross@suse.com> (raw)
In-Reply-To: <20170919095852.15785-1-jgross@suse.com>
Add the maximum possible mfn to struct xen_sysctl_physinfo in order to
enable Xen tools to size the grant table frame limits for a domU.
Signed-off-by: Juergen Gross <jgross@suse.com>
---
xen/common/sysctl.c | 1 +
xen/include/public/sysctl.h | 2 ++
2 files changed, 3 insertions(+)
diff --git a/xen/common/sysctl.c b/xen/common/sysctl.c
index a6882d1c9d..22f5d991f6 100644
--- a/xen/common/sysctl.c
+++ b/xen/common/sysctl.c
@@ -266,6 +266,7 @@ long do_sysctl(XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)
get_outstanding_claims(&pi->free_pages, &pi->outstanding_pages);
pi->scrub_pages = 0;
pi->cpu_khz = cpu_khz;
+ pi->max_mfn = get_upper_mfn_bound() - 1;
arch_do_physinfo(pi);
if ( copy_to_guest(u_sysctl, op, 1) )
diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h
index 7830b987da..86b9ced86b 100644
--- a/xen/include/public/sysctl.h
+++ b/xen/include/public/sysctl.h
@@ -108,6 +108,8 @@ struct xen_sysctl_physinfo {
/* XEN_SYSCTL_PHYSCAP_??? */
uint32_t capabilities;
+
+ uint64_t max_mfn; /* Largest possible MFN on this host */
};
typedef struct xen_sysctl_physinfo xen_sysctl_physinfo_t;
DEFINE_XEN_GUEST_HANDLE(xen_sysctl_physinfo_t);
--
2.12.3
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next prev parent reply other threads:[~2017-09-19 9:59 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-19 9:58 [PATCH v7 00/16] xen: better grant v2 support Juergen Gross
2017-09-19 9:58 ` [PATCH v7 01/16] xen: correct gnttab_get_status_frames() Juergen Gross
2017-09-19 9:58 ` [PATCH v7 02/16] xen: move XENMAPSPACE_grant_table code into grant_table.c Juergen Gross
2017-09-19 10:08 ` Paul Durrant
2017-09-19 15:41 ` Jan Beulich
2017-09-19 9:58 ` [PATCH v7 03/16] xen: clean up grant_table.h Juergen Gross
2017-09-19 15:55 ` Jan Beulich
[not found] ` <59C15A04020000780017D047@suse.com>
2017-09-19 16:04 ` Juergen Gross
2017-09-19 9:58 ` [PATCH v7 04/16] xen: add new domctl hypercall to set grant table resource limits Juergen Gross
2017-09-19 10:14 ` Paul Durrant
2017-09-19 10:20 ` Juergen Gross
2017-09-19 9:58 ` [PATCH v7 05/16] xen: add function for obtaining highest possible memory address Juergen Gross
2017-09-19 9:58 ` Juergen Gross [this message]
2017-09-19 9:58 ` [PATCH v7 07/16] libxc: add libxc support for setting grant table resource limits Juergen Gross
2017-09-19 10:59 ` Ian Jackson
2017-09-19 9:58 ` [PATCH v7 08/16] tools: set grant limits for xenstore stubdom Juergen Gross
2017-09-19 9:58 ` [PATCH v7 09/16] libxl: add max possible mfn to libxl_physinfo Juergen Gross
2017-09-19 11:00 ` Ian Jackson
2017-09-19 9:58 ` [PATCH v7 10/16] xl: add global grant limit config items Juergen Gross
2017-09-19 10:59 ` Ian Jackson
2017-09-19 9:58 ` [PATCH v7 11/16] libxl: add libxl support for setting grant table resource limits Juergen Gross
2017-09-19 10:59 ` Ian Jackson
2017-09-19 9:58 ` [PATCH v7 12/16] xen: delay allocation of grant table sub structures Juergen Gross
2017-09-19 10:28 ` Paul Durrant
2017-09-19 10:35 ` Juergen Gross
2017-09-19 10:39 ` Paul Durrant
2017-09-19 9:58 ` [PATCH v7 13/16] xen/arm: move arch specific grant table bits into grant_table.c Juergen Gross
2017-09-19 10:30 ` Paul Durrant
2017-09-19 9:58 ` [PATCH v7 14/16] xen: make grant resource limits per domain Juergen Gross
2017-09-19 10:34 ` Paul Durrant
2017-09-19 9:58 ` [PATCH v7 15/16] xen: make grant table limits boot parameters dom0 only Juergen Gross
2017-09-19 9:58 ` [PATCH v7 16/16] xen: add new Xen cpuid node for max address width info Juergen Gross
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