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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v3 for-4.21 00/22] x86: FRED support
This is the combined MSR cleanup and FRED series. Some patches of both v2's have already been committed. I have moved the MSR_IMM patch out. It's not strictly needed for FRED, and really needs to go behind Jan's patch to use mergable sections for altinstructions which is definitely not making 4.21 at this point. I almost got access to a piece of real hardware in time, but that fell through at the last minute. In terms of timing, I know we're getting very tight for 4.21, but there has been an awful lot of disruption with travel and holidays recently. Half the patches are already acked/reviewed, but can't easily go in due to logical dependencies (I suspect patches 15-17 could be committed right away as they're pretty independent.) Therefore I'd like to ask Oleksii whether the nominal release ack still stands. https://gitlab.com/xen-project/hardware/xen-staging/-/pipelines/2079705485 Andrew Cooper (22): x86/msr: Change rdmsr() to have normal API x86/msr: Change wrmsr() to take a single parameter x86/fsgsbase: Split out __{rd,wr}gs_shadow() helpers x86/fsgsbase: Update fs/gs helpers to use wrmsrns() x86/fsgsbase: Improve code generation in read_registers() x86/boot: Use RSTORSSP to establish SSP x86/traps: Alter switch_stack_and_jump() for FRED mode x86/traps: Skip Supervisor Shadow Stack tokens in FRED mode x86/traps: Make an IDT-specific #DB helper x86/traps: Make an IDT-specific #PF helper x86/fsgsbase: Make gskern accesses safe under FRED x86/traps: Introduce FRED entrypoints x86/traps: Enable FRED when requested x86/pv: Deduplicate is_canonical_address() in do_set_segment_base() x86/entry: Alter how IRET faults are recognised x86/entry: Drop the pre exception table infrastructure x86/entry: Rework the comment about SYSCALL and DF x86/pv: Adjust GS handling for FRED mode x86/pv: Guest exception handling in FRED mode x86/pv: ERETU error handling x86/pv: System call handling in FRED mode x86: Clamp reserved bits in eflags more aggressively xen/arch/x86/acpi/cpufreq/powernow.c | 12 +- xen/arch/x86/boot/x86_64.S | 23 +- xen/arch/x86/cpu/amd.c | 8 +- xen/arch/x86/cpu/common.c | 20 +- xen/arch/x86/cpu/intel.c | 30 +- xen/arch/x86/domain.c | 34 +- xen/arch/x86/extable.c | 14 - xen/arch/x86/genapic/x2apic.c | 5 +- xen/arch/x86/hvm/domain.c | 4 +- xen/arch/x86/hvm/vmx/vmcs.c | 32 +- xen/arch/x86/hvm/vmx/vmx.c | 4 +- xen/arch/x86/include/asm/asm_defns.h | 76 +++- xen/arch/x86/include/asm/current.h | 9 +- xen/arch/x86/include/asm/domain.h | 2 + xen/arch/x86/include/asm/fsgsbase.h | 66 +-- xen/arch/x86/include/asm/hypercall.h | 2 - xen/arch/x86/include/asm/msr.h | 48 ++- xen/arch/x86/include/asm/prot-key.h | 6 +- xen/arch/x86/include/asm/traps.h | 2 + xen/arch/x86/include/asm/uaccess.h | 2 - xen/arch/x86/include/asm/x86-defns.h | 7 + xen/arch/x86/mm.c | 12 +- xen/arch/x86/nmi.c | 18 +- xen/arch/x86/oprofile/op_model_athlon.c | 2 +- xen/arch/x86/pv/dom0_build.c | 2 +- xen/arch/x86/pv/domain.c | 22 +- xen/arch/x86/pv/iret.c | 8 +- xen/arch/x86/pv/misc-hypercalls.c | 42 +- xen/arch/x86/pv/traps.c | 39 ++ xen/arch/x86/setup.c | 33 +- xen/arch/x86/traps-setup.c | 83 +++- xen/arch/x86/traps.c | 519 ++++++++++++++++++++++-- xen/arch/x86/tsx.c | 27 +- xen/arch/x86/x86_64/Makefile | 1 + xen/arch/x86/x86_64/compat/entry.S | 3 +- xen/arch/x86/x86_64/entry-fred.S | 57 +++ xen/arch/x86/x86_64/entry.S | 46 ++- xen/arch/x86/xen.lds.S | 5 - 38 files changed, 1076 insertions(+), 249 deletions(-) create mode 100644 xen/arch/x86/x86_64/entry-fred.S -- 2.39.5
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