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    Subject[PATCH 4.9 00/38] 4.9.306-rc2 review
    Date
    This is the start of the stable review cycle for the 4.9.306 release.
    There are 38 patches in this series, all will be posted as a response
    to this one. If anyone has any issues with these being applied, please
    let me know.

    Responses should be made by Sat, 12 Mar 2022 14:07:58 +0000.
    Anything received after that time might be too late.

    The whole patch series can be found in one patch at:
    https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.306-rc2.gz
    or in the git tree and branch at:
    git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.9.y
    and the diffstat can be found below.

    thanks,

    greg k-h

    -------------
    Pseudo-Shortlog of commits:

    Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 4.9.306-rc2

    Juergen Gross <jgross@suse.com>
    xen/netfront: react properly to failing gnttab_end_foreign_access_ref()

    Juergen Gross <jgross@suse.com>
    xen/gnttab: fix gnttab_end_foreign_access() without page specified

    Juergen Gross <jgross@suse.com>
    xen: remove gnttab_query_foreign_access()

    Juergen Gross <jgross@suse.com>
    xen/gntalloc: don't use gnttab_query_foreign_access()

    Juergen Gross <jgross@suse.com>
    xen/scsifront: don't use gnttab_query_foreign_access() for mapped status

    Juergen Gross <jgross@suse.com>
    xen/netfront: don't use gnttab_query_foreign_access() for mapped status

    Juergen Gross <jgross@suse.com>
    xen/blkfront: don't use gnttab_query_foreign_access() for mapped status

    Juergen Gross <jgross@suse.com>
    xen/grant-table: add gnttab_try_end_foreign_access()

    Juergen Gross <jgross@suse.com>
    xen/xenbus: don't let xenbus_grant_ring() remove grants in error case

    Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    ARM: fix build warning in proc-v7-bugs.c

    WANG Chao <chao.wang@ucloud.cn>
    x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE

    Masahiro Yamada <yamada.masahiro@socionext.com>
    x86/build: Fix compiler support check for CONFIG_RETPOLINE

    Nathan Chancellor <nathan@kernel.org>
    ARM: Do not use NOCROSSREFS directive with ld.lld

    Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    ARM: fix co-processor register typo

    Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
    ARM: fix build error when BPF_SYSCALL is disabled

    Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    ARM: include unprivileged BPF status in Spectre V2 reporting

    Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    ARM: Spectre-BHB workaround

    Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    ARM: use LOADADDR() to get load address of sections

    Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    ARM: early traps initialisation

    Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    ARM: report Spectre v2 status through sysfs

    Mark Rutland <mark.rutland@arm.com>
    arm/arm64: smccc/psci: add arm_smccc_1_1_get_conduit()

    Steven Price <steven.price@arm.com>
    arm/arm64: Provide a wrapper for SMCCC 1.1 calls

    Josh Poimboeuf <jpoimboe@redhat.com>
    x86/speculation: Warn about eIBRS + LFENCE + Unprivileged eBPF + SMT

    Josh Poimboeuf <jpoimboe@redhat.com>
    x86/speculation: Warn about Spectre v2 LFENCE mitigation

    Kim Phillips <kim.phillips@amd.com>
    x86/speculation: Update link to AMD speculation whitepaper

    Kim Phillips <kim.phillips@amd.com>
    x86/speculation: Use generic retpoline by default on AMD

    Josh Poimboeuf <jpoimboe@redhat.com>
    x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting

    Peter Zijlstra <peterz@infradead.org>
    Documentation/hw-vuln: Update spectre doc

    Peter Zijlstra <peterz@infradead.org>
    x86/speculation: Add eIBRS + Retpoline options

    Peter Zijlstra (Intel) <peterz@infradead.org>
    x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE

    Peter Zijlstra <peterz@infradead.org>
    x86,bugs: Unconditionally allow spectre_v2=retpoline,amd

    Borislav Petkov <bp@suse.de>
    x86/speculation: Merge one test in spectre_v2_user_select_mitigation()

    Lukas Bulwahn <lukas.bulwahn@gmail.com>
    Documentation: refer to config RANDOMIZE_BASE for kernel address-space randomization

    Josh Poimboeuf <jpoimboe@redhat.com>
    Documentation: Add swapgs description to the Spectre v1 documentation

    Tim Chen <tim.c.chen@linux.intel.com>
    Documentation: Add section about CPU vulnerabilities for Spectre

    Zhenzhong Duan <zhenzhong.duan@oracle.com>
    x86/retpoline: Remove minimal retpoline support

    Zhenzhong Duan <zhenzhong.duan@oracle.com>
    x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support

    Zhenzhong Duan <zhenzhong.duan@oracle.com>
    x86/speculation: Add RETPOLINE_AMD support to the inline asm CALL_NOSPEC variant


    -------------

    Diffstat:

    Documentation/hw-vuln/index.rst | 1 +
    Documentation/hw-vuln/spectre.rst | 785 +++++++++++++++++++++++++++++++
    Documentation/kernel-parameters.txt | 8 +-
    Makefile | 4 +-
    arch/arm/include/asm/assembler.h | 10 +
    arch/arm/include/asm/spectre.h | 32 ++
    arch/arm/kernel/Makefile | 2 +
    arch/arm/kernel/entry-armv.S | 79 +++-
    arch/arm/kernel/entry-common.S | 24 +
    arch/arm/kernel/spectre.c | 71 +++
    arch/arm/kernel/traps.c | 65 ++-
    arch/arm/kernel/vmlinux-xip.lds.S | 45 +-
    arch/arm/kernel/vmlinux.lds.S | 45 +-
    arch/arm/mm/Kconfig | 11 +
    arch/arm/mm/proc-v7-bugs.c | 199 ++++++--
    arch/x86/Kconfig | 4 -
    arch/x86/Makefile | 11 +-
    arch/x86/include/asm/cpufeatures.h | 2 +-
    arch/x86/include/asm/nospec-branch.h | 41 +-
    arch/x86/kernel/cpu/bugs.c | 225 ++++++---
    drivers/block/xen-blkfront.c | 67 +--
    drivers/firmware/psci.c | 15 +
    drivers/net/xen-netfront.c | 54 ++-
    drivers/scsi/xen-scsifront.c | 3 +-
    drivers/xen/gntalloc.c | 25 +-
    drivers/xen/grant-table.c | 59 ++-
    drivers/xen/xenbus/xenbus_client.c | 24 +-
    include/linux/arm-smccc.h | 74 +++
    include/linux/bpf.h | 11 +
    include/linux/compiler-gcc.h | 2 +-
    include/linux/module.h | 2 +-
    include/xen/grant_table.h | 19 +-
    kernel/sysctl.c | 8 +
    scripts/mod/modpost.c | 2 +-
    tools/arch/x86/include/asm/cpufeatures.h | 2 +-
    35 files changed, 1763 insertions(+), 268 deletions(-)


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