incus: apply qemu 9.1 patches

pkgs/by-name/in/incus/0c37b7e3ec65b4d0e166e2127d9f1835320165b8.patch

@@ -0,0 +1,29 @@
+From 0c37b7e3ec65b4d0e166e2127d9f1835320165b8 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?St=C3=A9phane=20Graber?= <stgraber@stgraber.org>
+Date: Fri, 6 Sep 2024 17:07:11 -0400
+Subject: [PATCH] incusd/instance/qemu: Make O_DIRECT conditional on
+ directCache
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
+---
+ internal/server/instance/drivers/driver_qemu.go | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/internal/server/instance/drivers/driver_qemu.go b/internal/server/instance/drivers/driver_qemu.go
+index 5a94c9db43..9609b73c1b 100644
+--- a/internal/server/instance/drivers/driver_qemu.go
++++ b/internal/server/instance/drivers/driver_qemu.go
+@@ -4276,7 +4276,9 @@ func (d *qemu) addDriveConfig(qemuDev map[string]string, bootIndexes map[string]
+ 				permissions = unix.O_RDONLY
+ 			}
+ 
+-			permissions |= unix.O_DIRECT
++			if directCache {
++				permissions |= unix.O_DIRECT
++			}
+ 
+ 			f, err := os.OpenFile(driveConf.DevPath, permissions, 0)
+ 			if err != nil {

pkgs/by-name/in/incus/572afb06f66f83ca95efa1b9386fceeaa1c9e11b.patch

@@ -0,0 +1,28 @@
+From 572afb06f66f83ca95efa1b9386fceeaa1c9e11b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?St=C3=A9phane=20Graber?= <stgraber@stgraber.org>
+Date: Fri, 6 Sep 2024 15:51:35 -0400
+Subject: [PATCH] incusd/instance/qemu: Set O_DIRECT when passing in FDs
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This is required in most cases with QEMU 9.1.0.
+
+Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
+---
+ internal/server/instance/drivers/driver_qemu.go | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/internal/server/instance/drivers/driver_qemu.go b/internal/server/instance/drivers/driver_qemu.go
+index 37da21f42f..e25aab0667 100644
+--- a/internal/server/instance/drivers/driver_qemu.go
++++ b/internal/server/instance/drivers/driver_qemu.go
+@@ -4277,6 +4277,8 @@ func (d *qemu) addDriveConfig(qemuDev map[string]string, bootIndexes map[string]
+ 				permissions = unix.O_RDONLY
+ 			}
+ 
++			permissions |= unix.O_DIRECT
++
+ 			f, err := os.OpenFile(driveConf.DevPath, permissions, 0)
+ 			if err != nil {
+ 				return fmt.Errorf("Failed opening file descriptor for disk device %q: %w", driveConf.DevName, err)

pkgs/by-name/in/incus/58eeb4eeee8a9e7f9fa9c62443d00f0ec6797078.patch

@@ -0,0 +1,33 @@
+From 58eeb4eeee8a9e7f9fa9c62443d00f0ec6797078 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?St=C3=A9phane=20Graber?= <stgraber@stgraber.org>
+Date: Fri, 6 Sep 2024 17:10:01 -0400
+Subject: [PATCH] incusd/instance/qemu: Force threads I/O mode for
+ unsafe/writeback
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The default "native" aioMode requires direct I/O which is incompatible
+with unsafe/writeback.
+
+Signed-off-by: Stéphane Graber <stgraber@stgraber.org>
+---
+ internal/server/instance/drivers/driver_qemu.go | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/internal/server/instance/drivers/driver_qemu.go b/internal/server/instance/drivers/driver_qemu.go
+index 9609b73c1b..a5a4944d40 100644
+--- a/internal/server/instance/drivers/driver_qemu.go
++++ b/internal/server/instance/drivers/driver_qemu.go
+@@ -4088,9 +4088,11 @@ func (d *qemu) addDriveConfig(qemuDev map[string]string, bootIndexes map[string]
+ 	noFlushCache := false // Don't ignore any flush requests for the device.
+ 
+ 	if cacheMode == "unsafe" {
++		aioMode = "threads"
+ 		directCache = false
+ 		noFlushCache = true
+ 	} else if cacheMode == "writeback" {
++		aioMode = "threads"
+ 		directCache = false
+ 	}
+ 

pkgs/by-name/in/incus/package.nix

@@ -2,5 +2,10 @@ import ./generic.nix {
   hash = "sha256-FdoJI0SUH8KS3Epyw/HejgyhISWGLePsIjYUS2YTBvc=";
   version = "6.5.0";
   vendorHash = "sha256-8e2X7HIy1IEx6p41SHJyq5dNUJ3rRC2maXC4uNaSlnk=";
-  patches = [ ];
+  patches = [
+    # qemu 9.1 compat, remove in 6.6
+    ./572afb06f66f83ca95efa1b9386fceeaa1c9e11b.patch
+    ./58eeb4eeee8a9e7f9fa9c62443d00f0ec6797078.patch
+    ./0c37b7e3ec65b4d0e166e2127d9f1835320165b8.patch
+  ];
 }