[Qemu-devel] [PATCH 1/3] Revert "contrib/vhost-user-blk: fix the compilation issue"

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Commit a56de056c91f8 squashed the following two unrelated commits
at once:

- "contrib/vhost-user-blk: fix the compilation issue"
  (Message-Id: 1547615970-23545-2-git-send-email-changpeng.liu@intel.com)
- "i386/kvm: ignore masked irqs when update msi routes"
  (Message-Id: 20190116030815.27273-5-peterx@redhat.com)

While the git history remains bisectable, having a commit that changes
MSI/MSIX code but describes it as "fix vhost-user-blk compilation" is
rather confusing.
Revert the offending commit to properly apply both patches separately.

Reported-by: Peter Xu <peterx@redhat.com>
Fixes: a56de056c91f8
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 contrib/vhost-user-blk/vhost-user-blk.c |  6 +-----
 target/i386/kvm.c                       | 14 +++-----------
 2 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/contrib/vhost-user-blk/vhost-user-blk.c b/contrib/vhost-user-blk/vhost-user-blk.c
index 43583f2659..5c2092e13a 100644
--- a/contrib/vhost-user-blk/vhost-user-blk.c
+++ b/contrib/vhost-user-blk/vhost-user-blk.c
@@ -20,10 +20,6 @@
 #include "contrib/libvhost-user/libvhost-user-glib.h"
 #include "contrib/libvhost-user/libvhost-user.h"
 
-#if defined(__linux__)
-#include <linux/fs.h>
-#include <sys/ioctl.h>
-#endif
 
 struct virtio_blk_inhdr {
     unsigned char status;
@@ -525,7 +521,7 @@ vub_get_blocksize(int fd)
 
 #if defined(__linux__) && defined(BLKSSZGET)
     if (ioctl(fd, BLKSSZGET, &blocksize) == 0) {
-        return blocksize;
+        return blocklen;
     }
 #endif
 
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index beae1b99da..9af4542fb8 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -3894,7 +3894,7 @@ static QLIST_HEAD(, MSIRouteEntry) msi_route_list = \
 static void kvm_update_msi_routes_all(void *private, bool global,
                                       uint32_t index, uint32_t mask)
 {
-    int cnt = 0, vector;
+    int cnt = 0;
     MSIRouteEntry *entry;
     MSIMessage msg;
     PCIDevice *dev;
@@ -3902,19 +3902,11 @@ static void kvm_update_msi_routes_all(void *private, bool global,
     /* TODO: explicit route update */
     QLIST_FOREACH(entry, &msi_route_list, list) {
         cnt++;
-        vector = entry->vector;
         dev = entry->dev;
-        if (msix_enabled(dev) && !msix_is_masked(dev, vector)) {
-            msg = msix_get_message(dev, vector);
-        } else if (msi_enabled(dev) && !msi_is_masked(dev, vector)) {
-            msg = msi_get_message(dev, vector);
-        } else {
-            /*
-             * Either MSI/MSIX is disabled for the device, or the
-             * specific message was masked out.  Skip this one.
-             */
+        if (!msix_enabled(dev) && !msi_enabled(dev)) {
             continue;
         }
+        msg = pci_get_msi_message(dev, entry->vector);
         kvm_irqchip_update_msi_route(kvm_state, entry->virq, msg, dev);
     }
     kvm_irqchip_commit_routes(kvm_state);
-- 
2.20.1