From: Wei Liu <wl@xen.org>
To: Xen Development List <xen-devel@lists.xenproject.org>
Cc: "Wei Liu" <liuwe@microsoft.com>, "Wei Liu" <wl@xen.org>,
"Paul Durrant" <paul@xen.org>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Michael Kelley" <mikelley@microsoft.com>,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: [Xen-devel] [PATCH v4 4/7] DO NOT APPLY: x86/hyperv: issue an hypercall
Date: Wed, 22 Jan 2020 20:23:40 +0000 [thread overview]
Message-ID: <20200122202343.5703-5-liuwe@microsoft.com> (raw)
In-Reply-To: <20200122202343.5703-1-liuwe@microsoft.com>
Test if the infrastructure works.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
---
xen/arch/x86/guest/hyperv/hyperv.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/xen/arch/x86/guest/hyperv/hyperv.c b/xen/arch/x86/guest/hyperv/hyperv.c
index f986c1a805..536ce0d0dd 100644
--- a/xen/arch/x86/guest/hyperv/hyperv.c
+++ b/xen/arch/x86/guest/hyperv/hyperv.c
@@ -23,6 +23,7 @@
#include <asm/fixmap.h>
#include <asm/guest.h>
+#include <asm/guest/hyperv-hcall.h>
#include <asm/guest/hyperv-tlfs.h>
#include <asm/processor.h>
@@ -107,6 +108,15 @@ static void __init setup_hypercall_page(void)
}
set_fixmap_x(FIX_X_HYPERV_HCALL, mfn << PAGE_SHIFT);
+
+ /* XXX Wei: Issue an hypercall here to make sure things are set up
+ * correctly. When there is actual use of the hypercall facility,
+ * this can be removed.
+ */
+ {
+ uint16_t r = hv_do_hypercall(0xffff, 0, 0);
+ BUG_ON(r != HV_STATUS_INVALID_HYPERCALL_CODE);
+ }
}
static void __init setup(void)
--
2.20.1
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next prev parent reply other threads:[~2020-01-22 20:24 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-22 20:23 [Xen-devel] [PATCH v4 0/7] More Hyper-V infrastructure Wei Liu
2020-01-22 20:23 ` [Xen-devel] [PATCH v4 1/7] x86: provide executable fixmap facility Wei Liu
2020-01-22 20:56 ` Andrew Cooper
2020-01-28 15:09 ` Wei Liu
2020-01-23 11:04 ` Jan Beulich
2020-01-28 15:15 ` Wei Liu
2020-01-28 15:38 ` Jan Beulich
2020-01-29 14:42 ` Wei Liu
2020-01-29 14:59 ` Jan Beulich
2020-01-29 16:37 ` Wei Liu
2020-01-22 20:23 ` [Xen-devel] [PATCH v4 2/7] x86/hyperv: setup hypercall page Wei Liu
2020-01-22 21:31 ` Andrew Cooper
2020-01-23 10:04 ` Jan Beulich
2020-01-28 15:19 ` Wei Liu
2020-01-23 1:35 ` Michael Kelley
2020-01-28 15:20 ` Wei Liu
2020-01-23 11:18 ` Jan Beulich
2020-01-23 15:20 ` Michael Kelley
2020-01-28 15:30 ` Wei Liu
2020-01-28 15:41 ` Jan Beulich
2020-01-22 20:23 ` [Xen-devel] [PATCH v4 3/7] x86/hyperv: provide Hyper-V hypercall functions Wei Liu
2020-01-22 21:57 ` Andrew Cooper
2020-01-23 10:13 ` Jan Beulich
2020-01-29 18:25 ` Wei Liu
2020-01-23 11:28 ` Jan Beulich
2020-01-29 18:37 ` Wei Liu
2020-01-30 8:12 ` Jan Beulich
2020-01-30 11:55 ` Wei Liu
2020-01-22 20:23 ` Wei Liu [this message]
2020-01-22 20:23 ` [Xen-devel] [PATCH v4 5/7] x86/hyperv: provide percpu hypercall input page Wei Liu
2020-01-23 15:45 ` Jan Beulich
2020-01-28 15:50 ` Wei Liu
2020-01-28 16:15 ` Jan Beulich
2020-01-28 16:52 ` Wei Liu
2020-01-22 20:23 ` [Xen-devel] [PATCH v4 6/7] x86/hyperv: retrieve vp_index from Hyper-V Wei Liu
2020-01-23 15:48 ` Jan Beulich
2020-01-28 15:55 ` Wei Liu
2020-01-28 16:18 ` Jan Beulich
2020-01-28 16:33 ` Durrant, Paul
2020-01-28 16:53 ` Wei Liu
2020-01-28 17:01 ` Durrant, Paul
2020-01-22 20:23 ` [Xen-devel] [PATCH v4 7/7] x86/hyperv: setup VP assist page Wei Liu
2020-01-22 22:05 ` Andrew Cooper
2020-01-23 15:50 ` Jan Beulich
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