kernel: add patch and config

Add defconfig file for x86 KVM.
Add 9p patch to always use cached inode.

fixes #17

Signed-off-by: Julio Montes <julio.montes@intel.com>

kernel/configs/README.md

@@ -0,0 +1,28 @@
+## How to use defconfig files
+
+defconfig files must be copied in the kernel source code directory at `arch/x86/configs/`
+and then using `make` command the `.config` file can be generated.
+
+For example
+
+```
+cp x86_kata_kvm_4.14.x_defconfig linux-4.14.22/arch/x86/configs/
+popd linux-4.14.22
+make ARCH=x86_64 x86_kata_kvm_4.14.x_defconfig
+make -j4
+```
+
+## How to modify defconfig files
+
+first the `.config` file must be generated and edit the `.config` using `make` command. The defconfig file
+can be generated using `make savedefconfig`.
+
+For example
+```
+cp x86_kata_kvm_4.14.x_defconfig linux-4.14.22/arch/x86/configs/
+popd linux-4.14.22
+make menuconfig
+make savedefconfig
+popd
+cp linux-4.14.22/defconfig x86_kata_kvm_4.14.x_defconfig
+```

kernel/configs/x86_kata_kvm_4.14.x_defconfig

@@ -0,0 +1,318 @@
+# CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_DEFAULT_HOSTNAME="kata-container"
+# CONFIG_SWAP is not set
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_CROSS_MEMORY_ATTACH is not set
+CONFIG_NO_HZ_FULL=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_MEMCG=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CPUSETS=y
+# CONFIG_PROC_PID_CPUSET is not set
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_CGROUP_PERF=y
+CONFIG_NAMESPACES=y
+CONFIG_USER_NS=y
+CONFIG_SCHED_AUTOGROUP=y
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_RD_BZIP2 is not set
+# CONFIG_RD_LZMA is not set
+# CONFIG_RD_XZ is not set
+# CONFIG_RD_LZO is not set
+# CONFIG_RD_LZ4 is not set
+CONFIG_EXPERT=y
+# CONFIG_SYSFS_SYSCALL is not set
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS_ALL=y
+# CONFIG_PCSPKR_PLATFORM is not set
+# CONFIG_COMPAT_BRK is not set
+CONFIG_SLAB=y
+CONFIG_SLAB_FREELIST_RANDOM=y
+CONFIG_CC_STACKPROTECTOR_REGULAR=y
+CONFIG_MODULES=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_PARTITION_ADVANCED=y
+CONFIG_DEFAULT_DEADLINE=y
+CONFIG_SMP=y
+CONFIG_X86_X2APIC=y
+# CONFIG_X86_EXTENDED_PLATFORM is not set
+# CONFIG_SCHED_OMIT_FRAME_POINTER is not set
+CONFIG_HYPERVISOR_GUEST=y
+CONFIG_PARAVIRT=y
+CONFIG_MCORE2=y
+CONFIG_PROCESSOR_SELECT=y
+# CONFIG_CPU_SUP_AMD is not set
+# CONFIG_CPU_SUP_CENTAUR is not set
+# CONFIG_DMI is not set
+CONFIG_NR_CPUS=240
+CONFIG_SCHED_SMT=y
+# CONFIG_X86_MCE is not set
+# CONFIG_PERF_EVENTS_INTEL_RAPL is not set
+# CONFIG_PERF_EVENTS_INTEL_CSTATE is not set
+# CONFIG_MICROCODE is not set
+CONFIG_X86_MSR=y
+CONFIG_X86_CPUID=y
+CONFIG_MEMORY_HOTPLUG=y
+CONFIG_MEMORY_HOTREMOVE=y
+# CONFIG_BALLOON_COMPACTION is not set
+CONFIG_KSM=y
+CONFIG_X86_PMEM_LEGACY=y
+CONFIG_X86_CHECK_BIOS_CORRUPTION=y
+# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set
+CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1
+# CONFIG_X86_PAT is not set
+# CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS is not set
+CONFIG_HZ_1000=y
+CONFIG_PHYSICAL_START=0x100000
+# CONFIG_RANDOMIZE_BASE is not set
+CONFIG_PHYSICAL_ALIGN=0x1000000
+CONFIG_HOTPLUG_CPU=y
+CONFIG_LEGACY_VSYSCALL_NONE=y
+# CONFIG_MODIFY_LDT_SYSCALL is not set
+# CONFIG_SUSPEND is not set
+# CONFIG_ACPI_REV_OVERRIDE_POSSIBLE is not set
+# CONFIG_ACPI_AC is not set
+# CONFIG_ACPI_BATTERY is not set
+# CONFIG_ACPI_FAN is not set
+# CONFIG_ACPI_THERMAL is not set
+CONFIG_ACPI_PCI_SLOT=y
+# CONFIG_X86_PM_TIMER is not set
+CONFIG_ACPI_HOTPLUG_MEMORY=y
+CONFIG_ACPI_NFIT=y
+CONFIG_PCI_MMCONFIG=y
+CONFIG_PCIEPORTBUS=y
+CONFIG_HOTPLUG_PCI_PCIE=y
+CONFIG_PCI_MSI=y
+# CONFIG_HT_IRQ is not set
+CONFIG_HOTPLUG_PCI=y
+CONFIG_HOTPLUG_PCI_ACPI=y
+# CONFIG_ISA_DMA_API is not set
+CONFIG_BINFMT_MISC=y
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_PACKET_DIAG=y
+CONFIG_UNIX=y
+CONFIG_XFRM_USER=y
+CONFIG_XFRM_SUB_POLICY=y
+CONFIG_XFRM_MIGRATE=y
+CONFIG_XFRM_STATISTICS=y
+CONFIG_INET=y
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_DIAG is not set
+CONFIG_TCP_CONG_ADVANCED=y
+# CONFIG_TCP_CONG_BIC is not set
+# CONFIG_TCP_CONG_CUBIC is not set
+# CONFIG_TCP_CONG_WESTWOOD is not set
+# CONFIG_TCP_CONG_HTCP is not set
+CONFIG_TCP_CONG_BBR=y
+CONFIG_TCP_MD5SIG=y
+CONFIG_NETFILTER=y
+# CONFIG_BRIDGE_NETFILTER is not set
+CONFIG_IP_SET=y
+CONFIG_BRIDGE=y
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_CBQ=y
+CONFIG_NET_SCH_MULTIQ=y
+CONFIG_NET_SCH_FQ_CODEL=y
+CONFIG_NET_SCH_FQ=y
+CONFIG_NET_CLS_CGROUP=y
+CONFIG_NET_EMATCH=y
+CONFIG_VSOCKETS=y
+CONFIG_VIRTIO_VSOCKETS=y
+CONFIG_NET_SWITCHDEV=y
+# CONFIG_WIRELESS is not set
+CONFIG_NET_9P=y
+CONFIG_NET_9P_VIRTIO=y
+# CONFIG_UEVENT_HELPER is not set
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_FIRMWARE_IN_KERNEL is not set
+CONFIG_CONNECTOR=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_DAX=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_SCSI=y
+CONFIG_SCSI_MQ_DEFAULT=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_CHR_DEV_SG=y
+CONFIG_SCSI_VIRTIO=y
+CONFIG_MD=y
+CONFIG_BLK_DEV_DM=y
+CONFIG_DM_SNAPSHOT=y
+CONFIG_DM_THIN_PROVISIONING=y
+CONFIG_NETDEVICES=y
+CONFIG_TUN=y
+CONFIG_VETH=y
+CONFIG_VIRTIO_NET=y
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_VENDOR_ADAPTEC is not set
+# CONFIG_NET_VENDOR_AGERE is not set
+# CONFIG_NET_VENDOR_ALTEON is not set
+# CONFIG_NET_VENDOR_AMAZON is not set
+# CONFIG_NET_VENDOR_AMD is not set
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_VENDOR_ATHEROS is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_BROCADE is not set
+# CONFIG_NET_VENDOR_CAVIUM is not set
+# CONFIG_NET_VENDOR_CHELSIO is not set
+# CONFIG_NET_VENDOR_CISCO is not set
+# CONFIG_NET_VENDOR_DEC is not set
+# CONFIG_NET_VENDOR_DLINK is not set
+# CONFIG_NET_VENDOR_EMULEX is not set
+# CONFIG_NET_VENDOR_EZCHIP is not set
+# CONFIG_NET_VENDOR_EXAR is not set
+# CONFIG_NET_VENDOR_HP is not set
+CONFIG_IXGBE=y
+CONFIG_IXGBEVF=y
+CONFIG_I40E=y
+CONFIG_I40EVF=y
+# CONFIG_NET_VENDOR_I825XX is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MELLANOX is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_MYRI is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_NETRONOME is not set
+# CONFIG_NET_VENDOR_NVIDIA is not set
+# CONFIG_NET_VENDOR_OKI is not set
+# CONFIG_NET_PACKET_ENGINE is not set
+# CONFIG_NET_VENDOR_QLOGIC is not set
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_REALTEK is not set
+# CONFIG_NET_VENDOR_RENESAS is not set
+# CONFIG_NET_VENDOR_RDC is not set
+# CONFIG_NET_VENDOR_ROCKER is not set
+# CONFIG_NET_VENDOR_SAMSUNG is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SILAN is not set
+# CONFIG_NET_VENDOR_SIS is not set
+# CONFIG_NET_VENDOR_SMSC is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_SUN is not set
+# CONFIG_NET_VENDOR_TEHUTI is not set
+# CONFIG_NET_VENDOR_TI is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_NET_VENDOR_SYNOPSYS is not set
+# CONFIG_WLAN is not set
+CONFIG_NVM=y
+CONFIG_INPUT_FF_MEMLESS=y
+CONFIG_INPUT_EVDEV=y
+# CONFIG_KEYBOARD_ATKBD is not set
+# CONFIG_INPUT_MOUSE is not set
+CONFIG_INPUT_MISC=y
+# CONFIG_SERIO_I8042 is not set
+# CONFIG_SERIO_SERPORT is not set
+CONFIG_SERIO_RAW=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+# CONFIG_LEGACY_PTYS is not set
+# CONFIG_DEVMEM is not set
+CONFIG_SERIAL_8250=y
+# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
+# CONFIG_SERIAL_8250_PNP is not set
+CONFIG_SERIAL_8250_CONSOLE=y
+# CONFIG_SERIAL_8250_EXAR is not set
+CONFIG_SERIAL_8250_NR_UARTS=32
+# CONFIG_SERIAL_8250_LPSS is not set
+# CONFIG_SERIAL_8250_MID is not set
+CONFIG_TTY_PRINTK=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_HW_RANDOM=y
+# CONFIG_HW_RANDOM_AMD is not set
+# CONFIG_HW_RANDOM_VIA is not set
+CONFIG_HW_RANDOM_VIRTIO=y
+# CONFIG_HWMON is not set
+CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE=y
+# CONFIG_VGA_ARB is not set
+CONFIG_VGACON_SOFT_SCROLLBACK=y
+CONFIG_DUMMY_CONSOLE_COLUMNS=132
+# CONFIG_HID_GENERIC is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_UIO=y
+CONFIG_UIO_PCI_GENERIC=y
+CONFIG_VFIO=y
+CONFIG_VFIO_NOIOMMU=y
+CONFIG_VFIO_PCI=y
+CONFIG_VIRT_DRIVERS=y
+CONFIG_VIRTIO_PCI=y
+CONFIG_VIRTIO_BALLOON=y
+CONFIG_INTEL_IOMMU=y
+CONFIG_INTEL_IOMMU_SVM=y
+CONFIG_IRQ_REMAP=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_XFS_FS=y
+CONFIG_FS_DAX=y
+CONFIG_EXPORTFS_BLOCK_OPS=y
+CONFIG_FANOTIFY=y
+CONFIG_AUTOFS4_FS=y
+CONFIG_PROC_CHILDREN=y
+CONFIG_TMPFS=y
+CONFIG_TMPFS_POSIX_ACL=y
+CONFIG_HUGETLBFS=y
+# CONFIG_MISC_FILESYSTEMS is not set
+CONFIG_NFS_FS=m
+CONFIG_NFS_V4=m
+CONFIG_9P_FS=y
+CONFIG_9P_FS_POSIX_ACL=y
+CONFIG_9P_FS_SECURITY=y
+CONFIG_NLS_DEFAULT="utf8"
+CONFIG_NLS_CODEPAGE_437=y
+CONFIG_NLS_ASCII=y
+CONFIG_PRINTK_TIME=y
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_FRAME_WARN=1024
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_SECTION_MISMATCH=y
+# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
+CONFIG_DEBUG_SHIRQ=y
+CONFIG_SCHEDSTATS=y
+CONFIG_SCHED_STACK_END_CHECK=y
+CONFIG_STACKTRACE=y
+CONFIG_RCU_CPU_STALL_TIMEOUT=60
+# CONFIG_RCU_TRACE is not set
+# CONFIG_FTRACE is not set
+# CONFIG_X86_DEBUG_FPU is not set
+CONFIG_SECURITY=y
+# CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set
+CONFIG_CRYPTO_CRYPTD=y
+CONFIG_CRYPTO_CCM=y
+# CONFIG_CRYPTO_ECHAINIV is not set
+CONFIG_CRYPTO_LRW=y
+CONFIG_CRYPTO_XTS=y
+CONFIG_CRYPTO_CRC32C_INTEL=y
+CONFIG_CRYPTO_SHA512=y
+CONFIG_CRYPTO_AES_X86_64=y
+CONFIG_CRYPTO_USER_API_HASH=y
+CONFIG_CRYPTO_USER_API_SKCIPHER=y
+CONFIG_CRYPTO_USER_API_RNG=y
+CONFIG_CRYPTO_DEV_VIRTIO=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CRC8=y
+CONFIG_XZ_DEC=y
+# CONFIG_XZ_DEC_POWERPC is not set
+# CONFIG_XZ_DEC_IA64 is not set
+# CONFIG_XZ_DEC_ARM is not set
+# CONFIG_XZ_DEC_ARMTHUMB is not set
+# CONFIG_XZ_DEC_SPARC is not set
+CONFIG_CORDIC=y

kernel/patches/0001-NO-UPSTREAM-9P-always-use-cached-inode-to-fill-in-v9.patch

@@ -0,0 +1,47 @@
+From 0a235af3130a0c40fe2198f18198c7ac4e799a03 Mon Sep 17 00:00:00 2001
+From: Julio Montes <julio.montes@intel.com>
+Date: Mon, 18 Sep 2017 11:46:59 -0500
+Subject: [PATCH 2/3] NO-UPSTREAM: 9P: always use cached inode to fill in
+ v9fs_vfs_getattr
+
+So that if in cache=none mode, we don't have to lookup server that
+might not support open-unlink-fstat operation.
+
+fixes https://github.com/01org/cc-oci-runtime/issues/47
+fixes https://github.com/01org/cc-oci-runtime/issues/1062
+
+Signed-off-by: Peng Tao <bergwolf@gmail.com>
+---
+ fs/9p/vfs_inode.c      | 2 +-
+ fs/9p/vfs_inode_dotl.c | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
+index bdabb27..30395e0 100644
+--- a/fs/9p/vfs_inode.c
++++ b/fs/9p/vfs_inode.c
+@@ -1068,7 +1068,7 @@ v9fs_vfs_getattr(const struct path *path, struct kstat *stat,
+
+ 	p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
+ 	v9ses = v9fs_dentry2v9ses(dentry);
+-	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
++	if (!d_really_is_negative(dentry) || v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
+ 		generic_fillattr(d_inode(dentry), stat);
+ 		return 0;
+ 	}
+diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
+index 7f6ae21..5d7e970 100644
+--- a/fs/9p/vfs_inode_dotl.c
++++ b/fs/9p/vfs_inode_dotl.c
+@@ -481,7 +481,7 @@ v9fs_vfs_getattr_dotl(const struct path *path, struct kstat *stat,
+
+ 	p9_debug(P9_DEBUG_VFS, "dentry: %p\n", dentry);
+ 	v9ses = v9fs_dentry2v9ses(dentry);
+-	if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
++	if (!d_really_is_negative(dentry) || v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE) {
+ 		generic_fillattr(d_inode(dentry), stat);
+ 		return 0;
+ 	}
+-- 
+2.9.5
+