linux_dsm_epyc7002/arch/x86
Vitaly Kuznetsov 2635b5c4a0 KVM: x86: interrupt based APF 'page ready' event delivery
Concerns were expressed around APF delivery via synthetic #PF exception as
in some cases such delivery may collide with real page fault. For 'page
ready' notifications we can easily switch to using an interrupt instead.
Introduce new MSR_KVM_ASYNC_PF_INT mechanism and deprecate the legacy one.

One notable difference between the two mechanisms is that interrupt may not
get handled immediately so whenever we would like to deliver next event
(regardless of its type) we must be sure the guest had read and cleared
previous event in the slot.

While on it, get rid on 'type 1/type 2' names for APF events in the
documentation as they are causing confusion. Use 'page not present'
and 'page ready' everywhere instead.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20200525144125.143875-6-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-01 04:26:07 -04:00
..
boot SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
configs compiler: remove CONFIG_OPTIMIZE_INLINING entirely 2020-04-07 10:43:42 -07:00
crypto crypto: arch/nhpoly1305 - process in explicit 4k chunks 2020-04-30 15:16:59 +10:00
entry x86/kvm: Handle async page faults directly through do_page_fault() 2020-05-19 15:53:57 +02:00
events perf/x86/cstate: Add Jasper Lake CPU support 2020-04-22 21:43:12 +02:00
hyperv x86/hyperv: Suspend/resume the VP assist page for hibernation 2020-04-21 10:03:19 +01:00
ia32 Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-31 11:04:05 -07:00
include KVM: x86: interrupt based APF 'page ready' event delivery 2020-06-01 04:26:07 -04:00
kernel KVM: x86: extend struct kvm_vcpu_pv_apf_data with token info 2020-06-01 04:26:06 -04:00
kvm KVM: x86: interrupt based APF 'page ready' event delivery 2020-06-01 04:26:07 -04:00
lib SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
math-emu Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 10:42:40 -08:00
mm x86/kvm: Handle async page faults directly through do_page_fault() 2020-05-19 15:53:57 +02:00
net bpf, x86_32: Fix logic error in BPF_LDX zero-extension 2020-04-24 17:23:01 -07:00
oprofile
pci pci-v5.6-changes 2020-01-31 14:48:54 -08:00
platform efi/x86: Don't remap text<->rodata gap read-only for mixed mode 2020-04-14 08:32:17 +02:00
power x86/kernel: Convert to new CPU match macros 2020-03-24 21:28:26 +01:00
purgatory Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 10:42:40 -08:00
ras
realmode SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
tools .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
um mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS 2020-04-10 15:36:21 -07:00
video
xen xen: branch for v5.7-rc1b 2020-04-10 17:20:06 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Kbuild
Kconfig mm/userfaultfd: disable userfaultfd-wp on x86_32 2020-04-21 11:11:55 -07:00
Kconfig.assembler x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 2020-04-09 00:12:48 +09:00
Kconfig.cpu x86/cpu: Detect VMX features on Intel, Centaur and Zhaoxin CPUs 2020-01-13 18:02:53 +01:00
Kconfig.debug x86: mm: convert dump_pagetables to use walk_page_range 2020-02-04 03:05:25 +00:00
Makefile x86: probe assembler capabilities via kconfig instead of makefile 2020-04-09 00:01:59 +09:00
Makefile_32.cpu
Makefile.um