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7071a8859b
linux_dsm_epyc7002/arch/mips/include/asm
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James Hogan 7071a8859b KVM: MIPS/Emulate: Drop redundant TLB flushes on exceptions 
When exceptions are injected into the MIPS KVM guest, the whole host TLB
is flushed (except any entries in the guest KSeg0 range). This is
certainly not mandated by the architecture when exceptions are taken
(userland can't directly change TLB mappings anyway), and is a pretty
heavyweight operation:

 - There may be hundreds of TLB entries especially when a 512 entry FTLB
   is present. These are walked and read and conditionally invalidated,
   so the TLBINV feature can't be used either.

 - It'll indiscriminately wipe out entries belonging to other memory
   spaces. A simple ASID regeneration would be much faster to perform,
   although it'd wipe out the guest KSeg0 mappings too.

My suspicion is that this was simply to plaster over the fact that
kvm_mips_host_tlb_inv() incorrectly only invalidated TLB entries in the
ASID for guest usermode, and not the ASID for guest kernelmode.

Now that the recent commit "KVM: MIPS/TLB: Flush host TLB entry in
kernel ASID" fixes kvm_mips_host_tlb_inv() to flush TLB entries in the
kernelmode ASID when the guest TLB changes, lets drop these calls and
the otherwise unused kvm_mips_flush_host_tlb().

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
2017-02-03 15:21:03 +00:00
..
dec
emma
fw MIPS: Malta: Remove fw_memblock_t abstraction 2015-11-11 08:35:45 +01:00
ip32
lasat
mach-ar7 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-ath25 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-ath79 irqchip/ath79-cpu: Move the CPU IRQ driver from arch/mips/ath79/ 2016-02-17 13:47:19 +00:00
mach-au1x00 MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
mach-bcm47xx MIPS: BCM47xx: Fetch board info directly in callback function 2015-11-11 08:36:57 +01:00
mach-bcm63xx MIPS: BCM63xx: Fix typo 2016-05-28 12:35:06 +02:00
mach-bmips MIPS: BMIPS: Add BCM6358 support 2016-05-13 14:02:09 +02:00
mach-cavium-octeon MIPS: Octeon: mangle-port: fix build failure with VDSO code 2016-09-19 17:21:37 +02:00
mach-cobalt
mach-db1x00
mach-dec MIPS: DEC: Update CPU overrides 2015-06-21 21:52:44 +02:00
mach-emma2rh
mach-generic MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 2016-10-06 18:02:35 +02:00
mach-ip22
mach-ip27 MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 2016-10-06 18:02:35 +02:00
mach-ip28
mach-ip32 MIPS: IP32: Fix typo 2016-05-28 12:35:07 +02:00
mach-jazz
mach-jz4740 MIPS: jz4740: Remove obsolete code 2016-11-05 00:02:02 +01:00
mach-lantiq MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
mach-lasat
mach-loongson32 MIPS: Add RTC support for Loongson1C board 2016-10-04 16:13:57 +02:00
mach-loongson64 treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
mach-malta MIPS: Add definitions of SegCtl registers and use them 2016-05-28 12:35:04 +02:00
mach-netlogic
mach-paravirt MIPS: paravirt: Fix undefined reference to smp_bootstrap 2016-09-13 16:45:15 +02:00
mach-pic32 MIPS: Add support for PIC32MZDA platform 2016-01-24 02:53:28 +01:00
mach-pistachio MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-pmcs-msp71xx
mach-pnx833x
mach-ralink mips: mt7620: fallback to SDRAM when syscfg0 does not have a valid value for the memory type 2016-05-13 15:39:43 +02:00
mach-rc32434 MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
mach-rm
mach-sibyte MIPS: SB1: Remove support for Pass 1 parts. 2015-07-14 21:47:34 +02:00
mach-tx39xx
mach-tx49xx
mach-vr41xx
mach-xilfpga MIPS: xilfpga: Add mipsfpga platform code 2015-11-11 08:38:44 +01:00
mips-boards MIPS: SEAD3: Probe EHCI controller using DT 2016-10-05 01:31:20 +02:00
netlogic genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
octeon MIPS: Octeon: Delete unused cvmx-mdio.h 2016-10-04 16:13:57 +02:00
pci MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
sgi MIPS: IP22/IP28: Fix typo 2016-05-28 12:35:08 +02:00
sibyte MIPS: BCM1480: bcm1480_regs.h: strip redundant comments 2016-05-13 14:02:13 +02:00
sn MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
txx9
vr41xx
xtalk MIPS: Xtalk: Update xwidget.h with known Xtalk device numbers 2015-06-21 21:54:21 +02:00
abi.h MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
addrspace.h MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0 2016-10-06 18:02:35 +02:00
amon.h
arch_hweight.h
asm-eva.h
asm-offsets.h
asm.h
asmmacro-32.h
asmmacro-64.h
asmmacro.h MIPS: Add a missing ".set pop" in an early commit 2016-09-13 17:25:11 +02:00
atomic.h locking/atomic, arch/mips: Convert to _relaxed atomics 2016-06-16 10:48:34 +02:00
barrier.h MIPS: Barrier: Add definitions of SYNC stype values 2016-10-04 16:13:57 +02:00
bcache.h MIPS: Introduce API for enabling & disabling L2 prefetch 2015-10-26 09:49:41 +01:00
bitops.h MIPS: Move definitions for 32/64-bit agonstic inline assembler to new file. 2016-05-09 12:00:05 +02:00
bitrev.h MIPS: Implement __arch_bitrev* using bitswap for MIPSr6 2016-05-13 14:02:17 +02:00
bmips-spaces.h MIPS: BMIPS: Define BMIPS_FIXADDR_TOP in asm/bmips-spaces.h 2015-06-21 21:53:30 +02:00
bmips.h MIPS: BMIPS: Add early CPU initialization code 2016-05-13 14:01:55 +02:00
bootinfo.h MIPS: store the appended dtb address in a variable 2016-08-02 14:00:16 +02:00
branch.h
break.h
bug.h
bugs.h
cache.h
cacheflush.h MIPS: c-r4k: Split user/kernel flush_icache_range() 2016-10-04 16:13:57 +02:00
cacheops.h MIPS: Loongson: Add Loongson-3A R2 basic support 2016-05-13 14:02:14 +02:00
cdmm.h MIPS: CDMM: Add builtin_mips_cdmm_driver() macro 2015-11-05 11:15:41 +01:00
cevt-r4k.h MIPS: cevt-r4k: Migrate to new 'set-state' interface 2015-09-03 12:07:52 +02:00
checksum.h Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
clock.h
clocksource.h MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime() 2015-11-11 08:36:41 +01:00
cmp.h
cmpxchg.h arch: Remove __ARCH_HAVE_CMPXCHG 2015-05-13 10:55:42 +02:00
compat-signal.h Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
compat.h MIPS: Clean up compat_siginfo_t 2015-11-12 11:35:47 +01:00
compiler.h
cop2.h
cpu-features.h lib/GCD.c: use binary GCD algorithm instead of Euclidean 2016-05-20 17:58:30 -07:00
cpu-info.h MIPS: Add probing & defs for VZ & guest features 2016-05-13 15:30:25 +02:00
cpu-type.h MIPS: Add CPU support for Loongson1C 2016-10-04 16:13:57 +02:00
cpu.h MIPS: Add CPU support for Loongson1C 2016-10-04 16:13:57 +02:00
debug.h MIPS: Declare mips_debugfs_dir in a header 2015-10-26 09:49:42 +01:00
delay.h
device.h MIPS: Support per-device DMA coherence 2016-10-06 18:02:01 +02:00
div64.h
dma-coherence.h MIPS: Support per-device DMA coherence 2016-10-06 18:02:01 +02:00
dma-mapping.h MIPS: Support per-device DMA coherence 2016-10-06 18:02:01 +02:00
dma.h
ds1287.h
dsemul.h MIPS: Use per-mm page to execute branch delay slot instructions 2016-08-02 09:28:53 +02:00
dsp.h
edac.h EDAC: Cleanup atomic_scrub mess 2015-05-28 15:31:53 +02:00
elf.h MIPS: non-exec stack & heap when non-exec PT_GNU_STACK is present 2016-08-02 09:29:27 +02:00
errno.h
eva.h
exec.h
extable.h mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
fb.h
fixmap.h
floppy.h
fpregdef.h
fpu_emulator.h MIPS: Fix FCSR Cause bit handling for correct SIGFPE issue 2016-11-04 01:28:41 +01:00
fpu.h MIPS: Fix FPU disable with preemption 2016-02-01 23:36:38 +01:00
ftrace.h
futex.h
gio_device.h
gt64120.h
hardirq.h
hazards.h MIPS: hazards.h: Fix typo 2016-05-28 12:35:06 +02:00
highmem.h MIPS: highmem: Turn flush_cache_kmaps into a no-op. 2016-05-13 14:01:38 +02:00
hpet.h
hugetlb.h mm/hugetlb: remove arch_prepare/release_hugepage from arch headers 2015-06-25 17:00:35 -07:00
hw_irq.h
i8259.h irqchip: i8259: Remove unused i8259A_irq_pending 2016-10-06 17:31:00 +02:00
ide.h
idle.h
inst.h
io.h MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT 2016-05-13 14:02:15 +02:00
irq_cpu.h
irq_gt641xx.h
irq_regs.h MIPS: Select CONFIG_HANDLE_DOMAIN_IRQ and make it work. 2016-05-13 14:01:40 +02:00
irq.h nmi_backtrace: add more trigger_*_cpu_backtrace() methods 2016-10-07 18:46:30 -07:00
irqflags.h MIPS: Loongson-3: Introduce CONFIG_LOONGSON3_ENHANCEMENT 2016-05-13 14:02:15 +02:00
isadep.h
jazz.h
jazzdma.h
jump_label.h locking/static_keys: Add a new static_key interface 2015-08-03 11:34:15 +02:00
Kbuild locking/mutex: Kill arch specific code 2016-10-25 11:31:51 +02:00
kdebug.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
kexec.h mips/panic: replace smp_send_stop() with kdump friendly version in panic path 2016-10-11 15:06:32 -07:00
kgdb.h MIPS: Get rid of 'kgdb_early_setup' cruft. 2015-06-21 21:54:10 +02:00
kmap_types.h
kprobes.h
kvm_host.h KVM: MIPS/Emulate: Drop redundant TLB flushes on exceptions 2017-02-03 15:21:03 +00:00
kvm_para.h
linkage.h MIPS: Remove "__weak" definition from arch-specific linkage.h 2015-09-03 12:07:39 +02:00
llsc.h MIPS: Move definitions for 32/64-bit agonstic inline assembler to new file. 2016-05-09 12:00:05 +02:00
local.h
m48t37.h
maar.h MIPS: Initialise MAARs on secondary CPUs 2015-09-27 14:15:26 +02:00
machine.h MIPS: generic: Introduce generic DT-based board support 2016-10-06 18:04:04 +02:00
mc146818-time.h
mc146818rtc.h
mips_machine.h
mips_mt.h MIPS: MT: Fix typo 2016-05-28 12:35:07 +02:00
mips-cm.h MIPS: pm-cps: Support CM3 changes to Coherence Enable Register 2016-10-04 16:13:57 +02:00
mips-cpc.h MIPS: CPC: Add start, stop and running CM3 CPC registers 2016-05-13 14:01:48 +02:00
mips-r2-to-r6-emul.h MIPS: traps: Correct the SIGTRAP debug ABI in do_watch' and do_trap_or_bp' 2016-04-03 12:32:09 +02:00
mipsmtregs.h
mipsprom.h
mipsregs.h MIPS: Mask out limit field when calculating wired entry count 2016-11-24 16:44:16 +01:00
mmu_context.h KVM: MIPS/TLB: Drop kvm_local_flush_tlb_all() 2017-02-03 15:21:02 +00:00
mmu.h MIPS: Use per-mm page to execute branch delay slot instructions 2016-08-02 09:28:53 +02:00
mmzone.h
module.h mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
msa.h MIPS: Fix MSA asm warnings in control reg accessors 2016-07-24 12:45:00 +02:00
msc01_ic.h
nile4.h
paccess.h
page.h treewide: replace config_enabled() with IS_ENABLED() (2nd round) 2016-08-26 17:39:35 -07:00
pci.h MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY 2016-10-06 18:00:05 +02:00
perf_event.h
pgalloc.h MIPS: Move pgd_alloc() out of header 2017-02-02 15:06:26 +00:00
pgtable-32.h MIPS: mm: Fix MIPS32 36b physical addressing (alchemy, netlogic) 2016-05-13 15:30:25 +02:00
pgtable-64.h MIPS64: Support of at least 48 bits of SEGBITS 2016-05-13 14:02:16 +02:00
pgtable-bits.h MIPS: Allow RIXI to be used on non-R2 or R6 cores 2016-05-13 15:30:25 +02:00
pgtable.h mm: move phys_mem_access_prot_allowed() declaration to pgtable.h 2016-10-07 18:46:29 -07:00
pm-cps.h MIPS: pm-cps: Add MIPSr6 CPU support 2016-10-04 16:13:57 +02:00
pm.h
pmon.h
prefetch.h
processor.h locking/core: Provide common cpu_relax_yield() definition 2016-11-17 08:17:36 +01:00
prom.h MIPS: prepare for user enabling of CONFIG_OF 2015-06-21 21:54:14 +02:00
ptrace.h MIPS: ptrace: Fix regs_return_value for kernel context 2016-10-12 14:34:45 +02:00
r4k-timer.h
r4kcache.h MIPS: Add return errors to protected cache ops 2017-02-03 15:19:02 +00:00
reboot.h
reg.h
regdef.h
rtlx.h
seccomp.h tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
setup.h MIPS: KVM: Don't hardcode restored HWREna 2016-06-15 23:58:31 +02:00
sgialib.h
sgiarcs.h MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
shmparam.h
sigcontext.h
signal.h Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
sim.h
smp-cps.h MIPS: smp-cps: Pull boot config retrieval out of mips_cps_boot_vpes 2016-05-13 14:01:50 +02:00
smp-ops.h MIPS: Make smp CMP, CPS and MT use the new generic IPI functions 2016-02-25 10:56:58 +01:00
smp.h MIPS: smp.c: Introduce mechanism for freeing and allocating IPIs 2016-10-05 01:31:20 +02:00
sni.h
socket.h
sparsemem.h
spinlock_types.h
spinlock.h locking/spinlock, arch: Update and fix spin_unlock_wait() implementations 2016-06-14 11:55:15 +02:00
spram.h
stackframe.h MIPS: Fix FPU disable with preemption 2016-02-01 23:36:38 +01:00
stackprotector.h
stacktrace.h
string.h
switch_to.h MIPS: Fix FCSR Cause bit handling for correct SIGFPE issue 2016-11-04 01:28:41 +01:00
syscall.h tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
termios.h Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
thread_info.h MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
time.h MIPS: Remove "weak" from get_c0_compare_int() declaration 2015-09-03 12:07:38 +02:00
timex.h
tlb.h MIPS: Mask out limit field when calculating wired entry count 2016-11-24 16:44:16 +01:00
tlbdebug.h MIPS: Refactor dumping of TLB registers for r3k/r4k 2015-09-03 12:07:45 +02:00
tlbex.h MIPS: Export some tlbex internals for KVM to use 2017-02-03 15:19:01 +00:00
tlbflush.h
tlbmisc.h
topology.h sched/topology: Rename topology_thread_cpumask() to topology_sibling_cpumask() 2015-05-27 15:22:15 +02:00
traps.h
txx9irq.h MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip. 2015-06-21 21:52:50 +02:00
txx9pio.h
txx9tmr.h
types.h
uaccess.h Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
uasm.h MIPS: uasm: Add include guards in asm/uasm.h 2017-02-03 15:19:01 +00:00
unaligned.h
unistd.h
uprobes.h uprobes: remove function declarations from arch/{mips,s390} 2016-10-07 18:46:30 -07:00
vdso.h MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime() 2015-11-11 08:36:41 +01:00
vga.h
vpe.h MIPS: MT: Remove "weak" from vpe_run() declaration 2015-08-26 15:23:40 +02:00
war.h
watch.h MIPS: Fix watchpoint restoration 2016-05-09 12:00:02 +02:00
wbflush.h