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Tsirkin" , Marcel Apfelbaum , Jason Wang , Marcelo Tosatti , , , Subject: [PATCH v4 05/17] hw/xen: populate store frontend nodes with XenStore PFN/port Date: Mon, 6 Nov 2023 14:34:55 +0000 Message-ID: <20231106143507.1060610-6-dwmw2@infradead.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231106143507.1060610-1-dwmw2@infradead.org> References: <20231106143507.1060610-1-dwmw2@infradead.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: Bulk X-ZM-MESSAGEID: 1699281497660100001 Content-Type: text/plain; charset="utf-8" From: David Woodhouse This is kind of redundant since without being able to get these through some other method (HVMOP_get_param) the guest wouldn't be able to access XenStore in order to find them. Signed-off-by: David Woodhouse Reviewed-by: Paul Durrant --- hw/i386/kvm/xen_xenstore.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/hw/i386/kvm/xen_xenstore.c b/hw/i386/kvm/xen_xenstore.c index 831da535fc..b7c0407765 100644 --- a/hw/i386/kvm/xen_xenstore.c +++ b/hw/i386/kvm/xen_xenstore.c @@ -1434,6 +1434,7 @@ static void alloc_guest_port(XenXenstoreState *s) int xen_xenstore_reset(void) { XenXenstoreState *s =3D xen_xenstore_singleton; + GList *perms; int err; =20 if (!s) { @@ -1461,6 +1462,16 @@ int xen_xenstore_reset(void) } s->be_port =3D err; =20 + /* Create frontend store nodes */ + perms =3D g_list_append(NULL, xs_perm_as_string(XS_PERM_NONE, DOMID_QE= MU)); + perms =3D g_list_append(perms, xs_perm_as_string(XS_PERM_READ, xen_dom= id)); + + relpath_printf(s, perms, "store/port", "%u", s->guest_port); + relpath_printf(s, perms, "store/ring-ref", "%lu", + XEN_SPECIAL_PFN(XENSTORE)); + + g_list_free_full(perms, g_free); + /* * We don't actually access the guest's page through the grant, because * this isn't real Xen, and we can just use the page we gave it in the --=20 2.34.1