uml: update to linux 4.14
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau
parent
c3a0102195
commit
6bf3a86ed6
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@ -22,7 +22,7 @@ BOARDNAME:=User Mode Linux
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FEATURES:=squashfs ext4 audio source-only
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MAINTAINER:=Florian Fainelli <florian@openwrt.org>
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KERNEL_PATCHVER:=4.9
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KERNEL_PATCHVER:=4.14
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include $(INCLUDE_DIR)/target.mk
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@ -2,14 +2,21 @@
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# CONFIG_64BIT is not set
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CONFIG_ARCH_DEFCONFIG="arch/um/configs/i386_defconfig"
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# CONFIG_ARCH_HAS_GCOV_PROFILE_ALL is not set
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CONFIG_ARCH_HAS_KCOV=y
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CONFIG_ARCH_HAS_SC_SIGNALS=y
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# CONFIG_ARCH_HAS_SG_CHAIN is not set
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# CONFIG_ARCH_HAS_STRICT_KERNEL_RWX is not set
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# CONFIG_ARCH_HAS_STRICT_MODULE_RWX is not set
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# CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set
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# CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set
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CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y
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CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
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CONFIG_BLK_DEV_COW_COMMON=y
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CONFIG_BLK_DEV_LOOP=y
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CONFIG_BLK_DEV_UBD=y
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CONFIG_BLK_DEV_UBD_SYNC=y
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CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
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# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
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CONFIG_CLONE_BACKWARDS=y
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CONFIG_CON_CHAN="xterm"
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CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
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@ -21,12 +28,12 @@ CONFIG_CPU_SUP_TRANSMETA_32=y
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CONFIG_CPU_SUP_UMC_32=y
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# CONFIG_CRASHLOG is not set
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CONFIG_CRC16=y
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CONFIG_CRYPTO_CRC32=y
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CONFIG_CRYPTO_CRC32C=y
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CONFIG_CRYPTO_HASH=y
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CONFIG_CRYPTO_HASH2=y
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CONFIG_CRYPTO_RNG2=y
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CONFIG_CRYPTO_WORKQUEUE=y
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CONFIG_DEBUG_BUGVERBOSE=y
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CONFIG_DEBUG_MEMORY_INIT=y
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CONFIG_DECOMPRESS_BZIP2=y
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CONFIG_DECOMPRESS_GZIP=y
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@ -43,17 +50,19 @@ CONFIG_F2FS_FS=y
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CONFIG_F2FS_FS_XATTR=y
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CONFIG_F2FS_STAT_FS=y
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CONFIG_FS_MBCACHE=y
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CONFIG_GENERIC_BUG=y
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CONFIG_GENERIC_CLOCKEVENTS=y
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CONFIG_GENERIC_CPU_DEVICES=y
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CONFIG_GENERIC_FIND_FIRST_BIT=y
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CONFIG_GENERIC_IO=y
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CONFIG_GENERIC_IRQ_SHOW=y
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# CONFIG_GRO_CELLS is not set
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# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
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CONFIG_HAVE_AOUT=y
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CONFIG_HAVE_ARCH_AUDITSYSCALL=y
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# CONFIG_HAVE_ARCH_BITREVERSE is not set
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CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
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# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
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CONFIG_HAVE_DEBUG_KMEMLEAK=y
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CONFIG_HAVE_FUTEX_CMPXCHG=y
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# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
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CONFIG_HAVE_NET_DSA=y
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@ -67,7 +76,6 @@ CONFIG_IOSCHED_CFQ=y
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CONFIG_IRQ_WORK=y
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CONFIG_ISO9660_FS=y
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CONFIG_JBD2=y
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# CONFIG_JFFS2_CMODE_PRIORITY is not set
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# CONFIG_JFFS2_FS is not set
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CONFIG_KALLSYMS=y
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CONFIG_KERNEL_STACK_ORDER=2
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@ -85,6 +93,7 @@ CONFIG_MCONSOLE=y
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# CONFIG_MCORE2 is not set
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# CONFIG_MCRUSOE is not set
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# CONFIG_MCYRIXIII is not set
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# CONFIG_MDIO_BUS is not set
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# CONFIG_MEFFICEON is not set
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# CONFIG_MELAN is not set
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# CONFIG_MGEODEGX1 is not set
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@ -109,6 +118,7 @@ CONFIG_NLS=y
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# CONFIG_NOCONFIG_CHAN is not set
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CONFIG_NO_DMA=y
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CONFIG_NO_IOMEM=y
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CONFIG_NR_CPUS=1
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# CONFIG_NSC_GPIO is not set
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CONFIG_NULL_CHAN=y
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# CONFIG_OF is not set
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@ -118,10 +128,10 @@ CONFIG_PGTABLE_LEVELS=2
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CONFIG_PORT_CHAN=y
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CONFIG_POSIX_MQUEUE=y
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CONFIG_POSIX_MQUEUE_SYSCTL=y
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CONFIG_PRINT_QUOTA_WARNING=y
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# CONFIG_PROCESSOR_SELECT is not set
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CONFIG_PROC_PAGE_MONITOR=y
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CONFIG_PTY_CHAN=y
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# CONFIG_RCU_NEED_SEGCBLIST is not set
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# CONFIG_RCU_STALL_COMMON is not set
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CONFIG_RD_BZIP2=y
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CONFIG_RD_GZIP=y
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@ -134,7 +144,6 @@ CONFIG_SOFT_WATCHDOG=m
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CONFIG_SOUND=m
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CONFIG_SOUND_OSS_CORE=y
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CONFIG_SOUND_OSS_CORE_PRECLAIM=y
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CONFIG_SQUASHFS_EMBEDDED=y
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CONFIG_SRCU=y
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CONFIG_SSL=y
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CONFIG_SSL_CHAN="pty"
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@ -142,7 +151,7 @@ CONFIG_STACKTRACE=y
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CONFIG_STATIC_LINK=y
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CONFIG_STDERR_CONSOLE=y
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CONFIG_TICK_CPU_ACCOUNTING=y
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# CONFIG_TRACE_IRQFLAGS_SUPPORT is not set
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CONFIG_TINY_SRCU=y
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CONFIG_TTY_CHAN=y
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CONFIG_UML=y
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CONFIG_UML_NET=y
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@ -175,4 +184,3 @@ CONFIG_X86_TSC=y
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CONFIG_X86_USE_PPRO_CHECKSUM=y
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CONFIG_XTERM_CHAN=y
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CONFIG_ZLIB_INFLATE=y
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CONFIG_ZONE_DMA_FLAG=0
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@ -2,14 +2,21 @@ CONFIG_3_LEVEL_PGTABLES=y
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CONFIG_64BIT=y
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CONFIG_ARCH_DEFCONFIG="arch/um/configs/x86_64_defconfig"
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# CONFIG_ARCH_HAS_GCOV_PROFILE_ALL is not set
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CONFIG_ARCH_HAS_KCOV=y
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# CONFIG_ARCH_HAS_SC_SIGNALS is not set
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# CONFIG_ARCH_HAS_SG_CHAIN is not set
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# CONFIG_ARCH_HAS_STRICT_KERNEL_RWX is not set
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# CONFIG_ARCH_HAS_STRICT_MODULE_RWX is not set
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# CONFIG_ARCH_OPTIONAL_KERNEL_RWX is not set
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# CONFIG_ARCH_OPTIONAL_KERNEL_RWX_DEFAULT is not set
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# CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA is not set
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CONFIG_BINFMT_MISC=m
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CONFIG_BLK_DEV_COW_COMMON=y
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CONFIG_BLK_DEV_LOOP=y
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CONFIG_BLK_DEV_UBD=y
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CONFIG_BLK_DEV_UBD_SYNC=y
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CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y
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# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
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CONFIG_CON_CHAN="xterm"
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CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
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CONFIG_CPU_SUP_AMD=y
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@ -18,16 +25,15 @@ CONFIG_CPU_SUP_INTEL=y
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# CONFIG_CRASHLOG is not set
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CONFIG_CRC16=y
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# CONFIG_CRYPTO_AES_X86_64 is not set
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CONFIG_CRYPTO_CRC32=y
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CONFIG_CRYPTO_CRC32C=y
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CONFIG_CRYPTO_HASH=y
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CONFIG_CRYPTO_HASH2=y
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CONFIG_CRYPTO_RNG2=y
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# CONFIG_CRYPTO_SALSA20_X86_64 is not set
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CONFIG_CRYPTO_SHA1=y
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# CONFIG_CRYPTO_SKEIN is not set
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# CONFIG_CRYPTO_TWOFISH_X86_64 is not set
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CONFIG_CRYPTO_WORKQUEUE=y
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CONFIG_DEBUG_BUGVERBOSE=y
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CONFIG_DEBUG_MEMORY_INIT=y
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CONFIG_DECOMPRESS_BZIP2=y
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CONFIG_DECOMPRESS_GZIP=y
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@ -43,17 +49,19 @@ CONFIG_F2FS_FS=y
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CONFIG_F2FS_FS_XATTR=y
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CONFIG_F2FS_STAT_FS=y
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CONFIG_FS_MBCACHE=y
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CONFIG_GENERIC_BUG=y
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CONFIG_GENERIC_CLOCKEVENTS=y
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# CONFIG_GENERIC_CPU is not set
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CONFIG_GENERIC_CPU_DEVICES=y
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CONFIG_GENERIC_FIND_FIRST_BIT=y
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CONFIG_GENERIC_IO=y
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CONFIG_GENERIC_IRQ_SHOW=y
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# CONFIG_GRO_CELLS is not set
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CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y
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CONFIG_HAVE_ARCH_AUDITSYSCALL=y
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# CONFIG_HAVE_ARCH_BITREVERSE is not set
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CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
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# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
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CONFIG_HAVE_DEBUG_KMEMLEAK=y
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CONFIG_HAVE_FUTEX_CMPXCHG=y
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# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
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CONFIG_HAVE_NET_DSA=y
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@ -77,6 +85,7 @@ CONFIG_LEGACY_PTY_COUNT=256
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# CONFIG_MATOM is not set
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CONFIG_MCONSOLE=y
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# CONFIG_MCORE2 is not set
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# CONFIG_MDIO_BUS is not set
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CONFIG_MK8=y
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# CONFIG_MMAPPER is not set
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CONFIG_MODULES_USE_ELF_RELA=y
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@ -88,6 +97,7 @@ CONFIG_NLS=y
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# CONFIG_NOCONFIG_CHAN is not set
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CONFIG_NO_DMA=y
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CONFIG_NO_IOMEM=y
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CONFIG_NR_CPUS=1
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CONFIG_NULL_CHAN=y
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# CONFIG_OF is not set
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CONFIG_PGTABLE_LEVELS=3
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@ -98,6 +108,7 @@ CONFIG_POSIX_MQUEUE_SYSCTL=y
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# CONFIG_PROCESSOR_SELECT is not set
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CONFIG_PROC_PAGE_MONITOR=y
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CONFIG_PTY_CHAN=y
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# CONFIG_RCU_NEED_SEGCBLIST is not set
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# CONFIG_RCU_STALL_COMMON is not set
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CONFIG_RD_BZIP2=y
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CONFIG_RD_GZIP=y
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@ -110,7 +121,6 @@ CONFIG_SOFT_WATCHDOG=m
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CONFIG_SOUND=m
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CONFIG_SOUND_OSS_CORE=y
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CONFIG_SOUND_OSS_CORE_PRECLAIM=y
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CONFIG_SQUASHFS_EMBEDDED=y
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CONFIG_SRCU=y
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CONFIG_SSL=y
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CONFIG_SSL_CHAN="pty"
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@ -118,7 +128,7 @@ CONFIG_STACKTRACE=y
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CONFIG_STATIC_LINK=y
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CONFIG_STDERR_CONSOLE=y
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CONFIG_TICK_CPU_ACCOUNTING=y
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# CONFIG_TRACE_IRQFLAGS_SUPPORT is not set
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CONFIG_TINY_SRCU=y
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CONFIG_TTY_CHAN=y
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CONFIG_UML=y
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CONFIG_UML_NET=y
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@ -150,4 +160,3 @@ CONFIG_X86_TSC=y
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CONFIG_X86_USE_PPRO_CHECKSUM=y
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CONFIG_XTERM_CHAN=y
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CONFIG_ZLIB_INFLATE=y
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CONFIG_ZONE_DMA_FLAG=0
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@ -31,19 +31,19 @@
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* Licensed under the GPL
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*/
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+#include "linux/kmod.h"
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+#include <linux/kmod.h>
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#include <linux/console.h>
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#include <linux/ctype.h>
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#include <linux/string.h>
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@@ -24,6 +25,7 @@
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#include <linux/fs.h>
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@@ -26,6 +27,7 @@
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#include <linux/mount.h>
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#include <linux/file.h>
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#include <linux/uaccess.h>
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+#include <linux/completion.h>
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#include <asm/uaccess.h>
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#include <asm/switch_to.h>
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@@ -121,6 +123,59 @@ void mconsole_log(struct mc_request *req
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#include <init.h>
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@@ -122,6 +124,59 @@ void mconsole_log(struct mc_request *req
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mconsole_reply(req, "", 0, 0);
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}
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@ -103,7 +103,7 @@
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void mconsole_proc(struct mc_request *req)
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{
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struct vfsmount *mnt = task_active_pid_ns(current)->proc_mnt;
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@@ -187,6 +242,7 @@ void mconsole_proc(struct mc_request *re
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@@ -183,6 +238,7 @@ void mconsole_proc(struct mc_request *re
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stop - pause the UML; it will do nothing until it receives a 'go' \n\
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go - continue the UML after a 'stop' \n\
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log <string> - make UML enter <string> into the kernel log\n\
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@ -134,32 +134,34 @@
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err = bind(sock, (struct sockaddr *) &addr, sizeof(addr));
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--- a/include/linux/kmod.h
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+++ b/include/linux/kmod.h
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@@ -62,6 +62,7 @@ struct subprocess_info {
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int wait;
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int retval;
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int (*init)(struct subprocess_info *info, struct cred *new);
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+ struct file *stdout;
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void (*cleanup)(struct subprocess_info *info);
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void *data;
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};
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@@ -102,4 +103,6 @@ extern int usermodehelper_read_trylock(v
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extern long usermodehelper_read_lock_wait(long timeout);
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extern void usermodehelper_read_unlock(void);
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@@ -45,4 +45,6 @@ static inline int request_module_nowait(
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#define try_then_request_module(x, mod...) (x)
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#endif
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+int call_usermodehelper_stdoutpipe(struct subprocess_info *sub_info, struct file **filp);
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+
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#endif /* __LINUX_KMOD_H__ */
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--- a/kernel/kmod.c
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+++ b/kernel/kmod.c
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@@ -39,6 +39,7 @@
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#include <linux/rwsem.h>
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--- a/include/linux/umh.h
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+++ b/include/linux/umh.h
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@@ -22,6 +22,7 @@ struct subprocess_info {
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const char *path;
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char **argv;
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char **envp;
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+ struct file *stdout;
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int wait;
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int retval;
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int (*init)(struct subprocess_info *info, struct cred *new);
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--- a/kernel/umh.c
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+++ b/kernel/umh.c
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@@ -25,6 +25,7 @@
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#include <linux/ptrace.h>
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#include <linux/async.h>
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#include <linux/uaccess.h>
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+#include <linux/pipe_fs_i.h>
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#include <asm/uaccess.h>
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#include <trace/events/module.h>
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@@ -222,6 +223,28 @@ static int call_usermodehelper_exec_asyn
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@@ -70,6 +71,28 @@ static int call_usermodehelper_exec_asyn
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flush_signal_handlers(current, 1);
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spin_unlock_irq(¤t->sighand->siglock);
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@ -188,23 +190,23 @@
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/*
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* Our parent (unbound workqueue) runs with elevated scheduling
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* priority. Avoid propagating that into the userspace child.
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@@ -540,6 +563,20 @@ struct subprocess_info *call_usermodehel
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@@ -393,6 +416,20 @@ struct subprocess_info *call_usermodehel
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}
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EXPORT_SYMBOL(call_usermodehelper_setup);
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+int call_usermodehelper_stdoutpipe(struct subprocess_info *sub_info,
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+ struct file **filp)
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+ struct file **filp)
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+{
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+ struct file *f[2];
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+ struct file *f[2];
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+
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+ if (create_pipe_files(f, 0)<0)
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+ return PTR_ERR(f);
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+ sub_info->stdout = f[1];
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+ *filp = f[0];
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+ return 0;
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+ if (create_pipe_files(f, 0) < 0)
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+ return PTR_ERR(f);
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+
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+ sub_info->stdout = f[1];
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+ *filp = f[0];
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+ return 0;
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+}
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+EXPORT_SYMBOL(call_usermodehelper_stdoutpipe);
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+
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+
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/**
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* call_usermodehelper_exec - start a usermode application
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@ -11,7 +11,7 @@ Applies to vanilla kernel 3.9.4.
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===============================================================================
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--- a/arch/um/Kconfig.net
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+++ b/arch/um/Kconfig.net
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@@ -21,6 +21,19 @@ config UML_NET
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@@ -22,6 +22,19 @@ config UML_NET
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enable at least one of the following transport options to actually
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make use of UML networking.
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@ -48,7 +48,7 @@ Applies to vanilla kernel 3.9.4.
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#define DRIVER_NAME "uml-netdev"
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static DEFINE_SPINLOCK(opened_lock);
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@@ -295,11 +303,53 @@ static void uml_net_user_timer_expire(un
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@@ -288,11 +296,53 @@ static void uml_net_user_timer_expire(un
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#endif
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}
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@ -102,7 +102,7 @@ Applies to vanilla kernel 3.9.4.
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if (str == NULL)
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goto random;
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@@ -340,9 +390,26 @@ static void setup_etheraddr(struct net_d
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@@ -333,9 +383,26 @@ static void setup_etheraddr(struct net_d
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return;
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random:
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@ -1,130 +0,0 @@
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From f44f1e7da7c8e3f4575d5d61c4df978496903fcc Mon Sep 17 00:00:00 2001
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From: Florian Fainelli <f.fainelli@gmail.com>
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Date: Tue, 23 May 2017 17:32:31 -0700
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Subject: [PATCH] um: Avoid longjmp/setjmp symbol clashes with libpthread.a
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[ Upstream commit f44f1e7da7c8e3f4575d5d61c4df978496903fcc ]
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Building a statically linked UML kernel on a Centos 6.9 host resulted in
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the following linking failure (GCC 4.4, glibc-2.12):
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/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/libpthread.a(libpthread.o):
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In function `siglongjmp':
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(.text+0x8490): multiple definition of `longjmp'
|
||||
arch/x86/um/built-in.o:/local/users/fainelli/openwrt/trunk/build_dir/target-x86_64_musl/linux-uml/linux-4.4.69/arch/x86/um/setjmp_64.S:44:
|
||||
first defined here
|
||||
/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/libpthread.a(libpthread.o):
|
||||
In function `sem_open':
|
||||
(.text+0x77cd): warning: the use of `mktemp' is dangerous, better use
|
||||
`mkstemp'
|
||||
collect2: ld returned 1 exit status
|
||||
make[4]: *** [vmlinux] Error 1
|
||||
|
||||
Adopt a solution similar to the one done for vmap where we define
|
||||
longjmp/setjmp to be kernel_longjmp/setjmp. In the process, make sure we
|
||||
do rename the functions in arch/x86/um/setjmp_*.S accordingly.
|
||||
|
||||
Fixes: a7df4716d195 ("um: link with -lpthread")
|
||||
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
|
||||
Signed-off-by: Richard Weinberger <richard@nod.at>
|
||||
---
|
||||
arch/um/Makefile | 4 ++++
|
||||
arch/x86/um/setjmp_32.S | 16 ++++++++--------
|
||||
arch/x86/um/setjmp_64.S | 16 ++++++++--------
|
||||
3 files changed, 20 insertions(+), 16 deletions(-)
|
||||
|
||||
--- a/arch/um/Makefile
|
||||
+++ b/arch/um/Makefile
|
||||
@@ -59,10 +59,14 @@ KBUILD_CPPFLAGS += -I$(srctree)/$(HOST_D
|
||||
# Same things for in6addr_loopback and mktime - found in libc. For these two we
|
||||
# only get link-time error, luckily.
|
||||
#
|
||||
+# -Dlongjmp=kernel_longjmp prevents anything from referencing the libpthread.a
|
||||
+# embedded copy of longjmp, same thing for setjmp.
|
||||
+#
|
||||
# These apply to USER_CFLAGS to.
|
||||
|
||||
KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ \
|
||||
$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \
|
||||
+ -Dlongjmp=kernel_longjmp -Dsetjmp=kernel_setjmp \
|
||||
-Din6addr_loopback=kernel_in6addr_loopback \
|
||||
-Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr
|
||||
|
||||
--- a/arch/x86/um/setjmp_32.S
|
||||
+++ b/arch/x86/um/setjmp_32.S
|
||||
@@ -16,9 +16,9 @@
|
||||
|
||||
.text
|
||||
.align 4
|
||||
- .globl setjmp
|
||||
- .type setjmp, @function
|
||||
-setjmp:
|
||||
+ .globl kernel_setjmp
|
||||
+ .type kernel_setjmp, @function
|
||||
+kernel_setjmp:
|
||||
#ifdef _REGPARM
|
||||
movl %eax,%edx
|
||||
#else
|
||||
@@ -35,13 +35,13 @@ setjmp:
|
||||
movl %ecx,20(%edx) # Return address
|
||||
ret
|
||||
|
||||
- .size setjmp,.-setjmp
|
||||
+ .size kernel_setjmp,.-kernel_setjmp
|
||||
|
||||
.text
|
||||
.align 4
|
||||
- .globl longjmp
|
||||
- .type longjmp, @function
|
||||
-longjmp:
|
||||
+ .globl kernel_longjmp
|
||||
+ .type kernel_longjmp, @function
|
||||
+kernel_longjmp:
|
||||
#ifdef _REGPARM
|
||||
xchgl %eax,%edx
|
||||
#else
|
||||
@@ -55,4 +55,4 @@ longjmp:
|
||||
movl 16(%edx),%edi
|
||||
jmp *20(%edx)
|
||||
|
||||
- .size longjmp,.-longjmp
|
||||
+ .size kernel_longjmp,.-kernel_longjmp
|
||||
--- a/arch/x86/um/setjmp_64.S
|
||||
+++ b/arch/x86/um/setjmp_64.S
|
||||
@@ -18,9 +18,9 @@
|
||||
|
||||
.text
|
||||
.align 4
|
||||
- .globl setjmp
|
||||
- .type setjmp, @function
|
||||
-setjmp:
|
||||
+ .globl kernel_setjmp
|
||||
+ .type kernel_setjmp, @function
|
||||
+kernel_setjmp:
|
||||
pop %rsi # Return address, and adjust the stack
|
||||
xorl %eax,%eax # Return value
|
||||
movq %rbx,(%rdi)
|
||||
@@ -34,13 +34,13 @@ setjmp:
|
||||
movq %rsi,56(%rdi) # Return address
|
||||
ret
|
||||
|
||||
- .size setjmp,.-setjmp
|
||||
+ .size kernel_setjmp,.-kernel_setjmp
|
||||
|
||||
.text
|
||||
.align 4
|
||||
- .globl longjmp
|
||||
- .type longjmp, @function
|
||||
-longjmp:
|
||||
+ .globl kernel_longjmp
|
||||
+ .type kernel_longjmp, @function
|
||||
+kernel_longjmp:
|
||||
movl %esi,%eax # Return value (int)
|
||||
movq (%rdi),%rbx
|
||||
movq 8(%rdi),%rsp
|
||||
@@ -51,4 +51,4 @@ longjmp:
|
||||
movq 48(%rdi),%r15
|
||||
jmp *56(%rdi)
|
||||
|
||||
- .size longjmp,.-longjmp
|
||||
+ .size kernel_longjmp,.-kernel_longjmp
|
||||
|
|
@ -1,99 +0,0 @@
|
|||
From 0a987645672ebde7844a9c0732a5a25f3d4bb6c6 Mon Sep 17 00:00:00 2001
|
||||
From: Florian Fainelli <f.fainelli@gmail.com>
|
||||
Date: Thu, 25 May 2017 11:36:26 -0700
|
||||
Subject: [PATCH] um: Allow building and running on older hosts
|
||||
|
||||
[ Upstream commit 0a987645672ebde7844a9c0732a5a25f3d4bb6c6 ]
|
||||
|
||||
Commit a78ff1112263 ("um: add extended processor state save/restore
|
||||
support") and b6024b21fec8 ("um: extend fpstate to _xstate to support
|
||||
YMM registers") forced the use of the x86 FP _xstate and
|
||||
PTRACE_GETREGSET/SETREGSET. On older hosts, we would neither be able to
|
||||
build UML nor run it anymore with these two commits applied because we
|
||||
don't have definitions for struct _xstate nor these two ptrace requests.
|
||||
|
||||
We can determine at build time which fp context structure to check
|
||||
against, just like we can keep using the old i387 fp save/restore if
|
||||
PTRACE_GETRESET/SETREGSET are not defined.
|
||||
|
||||
Fixes: a78ff1112263 ("um: add extended processor state save/restore support")
|
||||
Fixes: b6024b21fec8 ("um: extend fpstate to _xstate to support YMM registers")
|
||||
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
|
||||
Signed-off-by: Richard Weinberger <richard@nod.at>
|
||||
---
|
||||
arch/x86/um/os-Linux/registers.c | 12 ++++++++----
|
||||
arch/x86/um/user-offsets.c | 4 ++++
|
||||
2 files changed, 12 insertions(+), 4 deletions(-)
|
||||
|
||||
--- a/arch/x86/um/os-Linux/registers.c
|
||||
+++ b/arch/x86/um/os-Linux/registers.c
|
||||
@@ -26,6 +26,7 @@ int save_i387_registers(int pid, unsigne
|
||||
|
||||
int save_fp_registers(int pid, unsigned long *fp_regs)
|
||||
{
|
||||
+#ifdef PTRACE_GETREGSET
|
||||
struct iovec iov;
|
||||
|
||||
if (have_xstate_support) {
|
||||
@@ -34,9 +35,9 @@ int save_fp_registers(int pid, unsigned
|
||||
if (ptrace(PTRACE_GETREGSET, pid, NT_X86_XSTATE, &iov) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
- } else {
|
||||
+ } else
|
||||
+#endif
|
||||
return save_i387_registers(pid, fp_regs);
|
||||
- }
|
||||
}
|
||||
|
||||
int restore_i387_registers(int pid, unsigned long *fp_regs)
|
||||
@@ -48,6 +49,7 @@ int restore_i387_registers(int pid, unsi
|
||||
|
||||
int restore_fp_registers(int pid, unsigned long *fp_regs)
|
||||
{
|
||||
+#ifdef PTRACE_SETREGSET
|
||||
struct iovec iov;
|
||||
|
||||
if (have_xstate_support) {
|
||||
@@ -56,9 +58,9 @@ int restore_fp_registers(int pid, unsign
|
||||
if (ptrace(PTRACE_SETREGSET, pid, NT_X86_XSTATE, &iov) < 0)
|
||||
return -errno;
|
||||
return 0;
|
||||
- } else {
|
||||
+ } else
|
||||
+#endif
|
||||
return restore_i387_registers(pid, fp_regs);
|
||||
- }
|
||||
}
|
||||
|
||||
#ifdef __i386__
|
||||
@@ -122,6 +124,7 @@ int put_fp_registers(int pid, unsigned l
|
||||
|
||||
void arch_init_registers(int pid)
|
||||
{
|
||||
+#ifdef PTRACE_GETREGSET
|
||||
struct _xstate fp_regs;
|
||||
struct iovec iov;
|
||||
|
||||
@@ -129,6 +132,7 @@ void arch_init_registers(int pid)
|
||||
iov.iov_len = sizeof(struct _xstate);
|
||||
if (ptrace(PTRACE_GETREGSET, pid, NT_X86_XSTATE, &iov) == 0)
|
||||
have_xstate_support = 1;
|
||||
+#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
--- a/arch/x86/um/user-offsets.c
|
||||
+++ b/arch/x86/um/user-offsets.c
|
||||
@@ -50,7 +50,11 @@ void foo(void)
|
||||
DEFINE(HOST_GS, GS);
|
||||
DEFINE(HOST_ORIG_AX, ORIG_EAX);
|
||||
#else
|
||||
+#if defined(PTRACE_GETREGSET) && defined(PTRACE_SETREGSET)
|
||||
DEFINE(HOST_FP_SIZE, sizeof(struct _xstate) / sizeof(unsigned long));
|
||||
+#else
|
||||
+ DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
|
||||
+#endif
|
||||
DEFINE_LONGS(HOST_BX, RBX);
|
||||
DEFINE_LONGS(HOST_CX, RCX);
|
||||
DEFINE_LONGS(HOST_DI, RDI);
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
From 61e8d462457f202bf0c6393133425ad387825e22 Mon Sep 17 00:00:00 2001
|
||||
From: Richard Weinberger <richard@nod.at>
|
||||
Date: Thu, 6 Jul 2017 09:35:27 +0200
|
||||
Subject: [PATCH] um: Correctly check for PTRACE_GETRESET/SETREGSET
|
||||
|
||||
[ Upstream commit 61e8d462457f202bf0c6393133425ad387825e22 ]
|
||||
|
||||
When checking for PTRACE_GETRESET/SETREGSET, make sure that
|
||||
the correct header file is included. We need linux/ptrace.h
|
||||
which contains all ptrace UAPI related defines.
|
||||
Otherwise #if defined(PTRACE_GETRESET) is always false.
|
||||
|
||||
Cc: Florian Fainelli <f.fainelli@gmail.com>
|
||||
Signed-off-by: Richard Weinberger <richard@nod.at>
|
||||
---
|
||||
arch/x86/um/user-offsets.c | 2 +-
|
||||
1 file changed, 1 insertion(+), 1 deletion(-)
|
||||
|
||||
--- a/arch/x86/um/user-offsets.c
|
||||
+++ b/arch/x86/um/user-offsets.c
|
||||
@@ -5,7 +5,7 @@
|
||||
#include <sys/mman.h>
|
||||
#include <sys/user.h>
|
||||
#define __FRAME_OFFSETS
|
||||
-#include <asm/ptrace.h>
|
||||
+#include <linux/ptrace.h>
|
||||
#include <asm/types.h>
|
||||
|
||||
#ifdef __i386__
|
||||
|
|
@ -1,46 +0,0 @@
|
|||
From 2fb44600fe784449404c6639de26af8361999ec7 Mon Sep 17 00:00:00 2001
|
||||
From: Florian Fainelli <f.fainelli@gmail.com>
|
||||
Date: Tue, 18 Jul 2017 16:43:47 -0700
|
||||
Subject: [PATCH] um: Fix check for _xstate for older hosts
|
||||
|
||||
Commit 0a987645672e ("um: Allow building and running on older
|
||||
hosts") attempted to check for PTRACE_{GET,SET}REGSET under the premise
|
||||
that these ptrace(2) parameters were directly linked with the presence
|
||||
of the _xstate structure.
|
||||
|
||||
After Richard's commit 61e8d462457f ("um: Correctly check for
|
||||
PTRACE_GETRESET/SETREGSET") which properly included linux/ptrace.h
|
||||
instead of asm/ptrace.h, we could get into the original build failure
|
||||
that I reported:
|
||||
|
||||
arch/x86/um/user-offsets.c: In function 'foo':
|
||||
arch/x86/um/user-offsets.c:54: error: invalid application of 'sizeof' to
|
||||
incomplete type 'struct _xstate'
|
||||
|
||||
On this particular host, we do have PTRACE_GETREGSET and
|
||||
PTRACE_SETREGSET defined in linux/ptrace.h, but not the structure
|
||||
_xstate that should be pulled from the following include chain: signal.h
|
||||
-> bits/sigcontext.h.
|
||||
|
||||
Correctly fix this by checking for FP_XSTATE_MAGIC1 which is the correct
|
||||
way to see if struct _xstate is available or not on the host.
|
||||
|
||||
Fixes: 61e8d462457f ("um: Correctly check for PTRACE_GETRESET/SETREGSET")
|
||||
Fixes: 0a987645672e ("um: Allow building and running on older hosts")
|
||||
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
|
||||
Signed-off-by: Richard Weinberger <richard@nod.at>
|
||||
---
|
||||
arch/x86/um/user-offsets.c | 2 +-
|
||||
1 file changed, 1 insertion(+), 1 deletion(-)
|
||||
|
||||
--- a/arch/x86/um/user-offsets.c
|
||||
+++ b/arch/x86/um/user-offsets.c
|
||||
@@ -50,7 +50,7 @@ void foo(void)
|
||||
DEFINE(HOST_GS, GS);
|
||||
DEFINE(HOST_ORIG_AX, ORIG_EAX);
|
||||
#else
|
||||
-#if defined(PTRACE_GETREGSET) && defined(PTRACE_SETREGSET)
|
||||
+#ifdef FP_XSTATE_MAGIC1
|
||||
DEFINE(HOST_FP_SIZE, sizeof(struct _xstate) / sizeof(unsigned long));
|
||||
#else
|
||||
DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
|
||||
Loading…
Reference in New Issue