On Mon, Feb 26, 2024 at 12:12:32PM +0200, Nikolay Borisov wrote: > Here's the recently merged mds improvement patches adapted to latest stable tree. > I've only compile tested them, but since I have also done similar backports for > older kernels I'm sure they should work. > The main difference is in the definition of the CLEAR_CPU_BUFFERS macro since > 5.4 doesn't contains the alternative relocation handling logic hence the verw > instruction is moved out of the alternative definition and instead we have a jump which > skips the verw instruction there. That way the relocation will be handled by the > toolchain rather than the kernel. > > H. Peter Anvin (Intel) (1): > x86/asm: Add _ASM_RIP() macro for x86-64 (%rip) suffix > > Pawan Gupta (5): > x86/bugs: Add asm helpers for executing VERW > x86/entry_64: Add VERW just before userspace transition > x86/entry_32: Add VERW just before userspace transition > x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key > KVM/VMX: Move VERW closer to VMentry for MDS mitigation > > Sean Christopherson (1): > KVM/VMX: Use BT+JNC, i.e. EFLAGS.CF to select VMRESUME vs. VMLAUNCH > > Documentation/x86/mds.rst | 38 ++++++++++++++++++++-------- > arch/x86/entry/Makefile | 2 +- > arch/x86/entry/common.c | 2 -- > arch/x86/entry/entry.S | 23 +++++++++++++++++ > arch/x86/entry/entry_32.S | 3 +++ > arch/x86/entry/entry_64.S | 10 ++++++++ > arch/x86/entry/entry_64_compat.S | 1 + > arch/x86/include/asm/asm.h | 6 ++++- > arch/x86/include/asm/cpufeatures.h | 2 +- > arch/x86/include/asm/irqflags.h | 1 + > arch/x86/include/asm/nospec-branch.h | 26 ++++++++++--------- > arch/x86/kernel/cpu/bugs.c | 15 +++++------ > arch/x86/kernel/nmi.c | 3 --- > arch/x86/kvm/vmx/run_flags.h | 7 +++-- > arch/x86/kvm/vmx/vmenter.S | 9 ++++--- > arch/x86/kvm/vmx/vmx.c | 12 ++++++--- > 16 files changed, 111 insertions(+), 49 deletions(-) > create mode 100644 arch/x86/entry/entry.S I don't see the git commit id in any of these patches, can you fix that up and resend them? thanks, greg k-h
