AuxXxilium/linux_dsm_epyc7002
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84b6a34915
linux_dsm_epyc7002/arch/x86/kvm
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Peter Zijlstra 84b6a34915 x86/entry: Optimize local_db_save() for virt 
Because DRn access is 'difficult' with virt; but the DR7 read is cheaper
than a cacheline miss on native, add a virt specific fast path to
local_db_save(), such that when breakpoints are not in use to avoid
touching DRn entirely.

Suggested-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200529213321.187833200@infradead.org
2020-06-11 15:15:22 +02:00
..
mmu mmap locking API: convert mmap_sem call sites missed by coccinelle 2020-06-09 09:39:14 -07:00
svm x86/entry: Convert Machine Check to IDTENTRY_IST 2020-06-11 15:14:57 +02:00
vmx x86/entry: Optimize local_db_save() for virt 2020-06-11 15:15:22 +02:00
cpuid.c KVM: x86/pmu: Support full width counting 2020-06-01 04:26:09 -04:00
cpuid.h KVM: nSVM: implement KVM_GET_NESTED_STATE and KVM_SET_NESTED_STATE 2020-06-01 04:26:05 -04:00
debugfs.c KVM: no need to check return value of debugfs_create functions 2019-08-05 12:55:49 +02:00
emulate.c KVM: x86: handle wrap around 32-bit address space 2020-05-13 12:14:59 -04:00
hyperv.c Merge branch 'uaccess.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-06-10 16:02:54 -07:00
hyperv.h x86/kvm/hyper-v: Add support for synthetic debugger interface 2020-06-01 04:26:11 -04:00
i8254.c KVM: x86: Fix print format and coding style 2020-03-16 17:57:08 +01:00
i8254.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
i8259.c KVM: x86: Refactor picdev_write() to prevent Spectre-v1/L1TF attacks 2020-01-27 19:59:37 +01:00
ioapic.c kvm: ioapic: Restrict lazy EOI update to edge-triggered interrupts 2020-05-04 12:29:05 -04:00
ioapic.h kvm/x86: Remove redundant function implementations 2020-05-27 13:11:10 -04:00
irq_comm.c KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI 2020-02-21 18:04:57 +01:00
irq.c KVM: nSVM: extract svm_set_gif 2020-06-01 04:26:01 -04:00
irq.h kvm/x86: Remove redundant function implementations 2020-05-27 13:11:10 -04:00
Kconfig vhost: refine vhost and vringh kconfig 2020-04-01 12:06:26 -04:00
kvm_cache_regs.h KVM: VMX: Add proper cache tracking for CR0 2020-05-13 12:15:12 -04:00
kvm_emulate.h ARM: 2020-04-02 15:13:15 -07:00
lapic.c kvm/x86: Remove redundant function implementations 2020-05-27 13:11:10 -04:00
lapic.h KVM: x86: introduce kvm_can_use_hv_timer 2020-05-15 12:26:21 -04:00
Makefile kvm: Disable objtool frame pointer checking for vmenter.S 2020-04-20 17:11:19 -04:00
mmu_audit.c KVM: x86/mmu: Drop KVM's hugepage enums in favor of the kernel's enums 2020-05-15 12:26:11 -04:00
mmu.h KVM: MMU: pass arbitrary CR0/CR4/EFER to kvm_init_shadow_mmu 2020-06-01 04:26:03 -04:00
mmutrace.h KVM: x86: fix incorrect comparison in trace event 2020-02-20 18:13:44 +01:00
mtrr.c KVM: x86: Protect MSR-based index computations in fixed_msr_to_seg_unit() from Spectre-v1/L1TF attacks 2020-01-27 19:59:39 +01:00
pmu.c KVM: x86/pmu: Tweak kvm_pmu_get_msr to pass 'struct msr_data' in 2020-06-01 04:26:08 -04:00
pmu.h KVM: x86/pmu: Tweak kvm_pmu_get_msr to pass 'struct msr_data' in 2020-06-01 04:26:08 -04:00
trace.h x86/kvm/hyper-v: Add support for synthetic debugger interface 2020-06-01 04:26:11 -04:00
tss.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
x86.c x86/kvm/hyper-v: Add support for synthetic debugger interface 2020-06-01 04:26:11 -04:00
x86.h KVM: X86: Introduce more exit_fastpath_completion enum values 2020-05-15 12:26:19 -04:00