This is the start of the stable review cycle for the 5.15.48 release. There are 11 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 Thu, 16 Jun 2022 18:37:02 +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/v5.x/stable-review/patch-5.15.48-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Linux 5.15.48-rc1 Josh Poimboeuf <jpoimboe@xxxxxxxxxx> x86/speculation/mmio: Print SMT warning Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> KVM: x86/speculation: Disable Fill buffer clear within guests Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/speculation/mmio: Reuse SRBDS mitigation for SBDS Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/speculation/srbds: Update SRBDS mitigation selection Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/speculation/mmio: Enable CPU Fill buffer clearing on idle Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/speculation: Add a common function for MD_CLEAR mitigation update Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx> Documentation: Add documentation for Processor MMIO Stale Data ------------- Diffstat: Documentation/ABI/testing/sysfs-devices-system-cpu | 1 + Documentation/admin-guide/hw-vuln/index.rst | 1 + .../hw-vuln/processor_mmio_stale_data.rst | 246 +++++++++++++++++++++ Documentation/admin-guide/kernel-parameters.txt | 36 +++ Makefile | 4 +- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/msr-index.h | 25 +++ arch/x86/include/asm/nospec-branch.h | 2 + arch/x86/kernel/cpu/bugs.c | 235 +++++++++++++++++--- arch/x86/kernel/cpu/common.c | 52 ++++- arch/x86/kvm/vmx/vmx.c | 72 ++++++ arch/x86/kvm/vmx/vmx.h | 2 + arch/x86/kvm/x86.c | 3 + drivers/base/cpu.c | 8 + include/linux/cpu.h | 3 + tools/arch/x86/include/asm/cpufeatures.h | 1 + tools/arch/x86/include/asm/msr-index.h | 25 +++ 17 files changed, 676 insertions(+), 41 deletions(-)
