Merge remote-tracking branch 'remotes/cohuck-gitlab/tags/s390x-20201222' into staging

Further s390x updates:
- enhance the s390 devices acceptance test
- tcg: improve carry computation
- qga: send the ccw address with the fsinfo data
- fixes for protected virtualisation and zpci

# gpg: Signature made Tue 22 Dec 2020 10:37:34 GMT
# gpg:                using RSA key C3D0D66DC3624FF6A8C018CEDECF6B93C6F02FAF
# gpg:                issuer "cohuck@redhat.com"
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>" [unknown]
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>" [full]
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>" [unknown]
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>" [unknown]
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck-gitlab/tags/s390x-20201222:
  tests/acceptance: Add a test with the Fedora 31 kernel and initrd
  s390x/pci: Fix memory_region_access_valid call
  s390x/pci: fix pcistb length
  tests/acceptance: Test the virtio-balloon device on s390x
  tests/acceptance: Test virtio-rng on s390 via /dev/hwrng
  tests/acceptance: Extract the code to clear dmesg and wait for CRW reports
  tests/acceptance: test hot(un)plug of ccw devices
  target/s390x: Improve SUB LOGICAL WITH BORROW
  target/s390x: Improve cc computation for SUBTRACT LOGICAL
  target/s390x: Improve ADD LOGICAL WITH CARRY
  target/s390x: Improve cc computation for ADD LOGICAL
  qga/commands-posix: Send CCW address on s390x with the fsinfo data
  MAINTAINERS: move my git tree to gitlab
  s390x: pv: Fence additional unavailable SCLP facilities for PV guests

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 849923b..edf785b 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -1029,6 +1029,38 @@ static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath,
     return true;
 }
 
+/*
+ * Store disk device info for CCW devices (s390x channel I/O devices).
+ * Returns true if information has been stored, or false for failure.
+ */
+static bool build_guest_fsinfo_for_ccw_dev(char const *syspath,
+                                           GuestDiskAddress *disk,
+                                           Error **errp)
+{
+    unsigned int cssid, ssid, subchno, devno;
+    char *p;
+
+    p = strstr(syspath, "/devices/css");
+    if (!p || sscanf(p + 12, "%*x/%x.%x.%x/%*x.%*x.%x/",
+                     &cssid, &ssid, &subchno, &devno) < 4) {
+        g_debug("could not parse ccw device sysfs path: %s", syspath);
+        return false;
+    }
+
+    disk->has_ccw_address = true;
+    disk->ccw_address = g_new0(GuestCCWAddress, 1);
+    disk->ccw_address->cssid = cssid;
+    disk->ccw_address->ssid = ssid;
+    disk->ccw_address->subchno = subchno;
+    disk->ccw_address->devno = devno;
+
+    if (strstr(p, "/virtio")) {
+        build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp);
+    }
+
+    return true;
+}
+
 /* Store disk device info specified by @sysfs into @fs */
 static void build_guest_fsinfo_for_real_device(char const *syspath,
                                                GuestFilesystemInfo *fs,
@@ -1077,6 +1109,8 @@ static void build_guest_fsinfo_for_real_device(char const *syspath,
 
     if (strstr(syspath, "/devices/pci")) {
         has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp);
+    } else if (strstr(syspath, "/devices/css")) {
+        has_hwinf = build_guest_fsinfo_for_ccw_dev(syspath, disk, errp);
     } else if (strstr(syspath, "/virtio")) {
         has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp);
     } else {