AcoSail/kernel_optimize_test
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878edf014e
kernel_optimize_test/arch/mips/kernel
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James Hogan 878edf014e MIPS: KVM: Restore host EBase from ebase variable 
The host kernel's exception vector base address is currently saved in
the VCPU structure at creation time, and restored on a guest exit.
However it doesn't change and can already be easily accessed from the
'ebase' variable (arch/mips/kernel/traps.c), so drop the host_ebase
member of kvm_vcpu_arch, export the 'ebase' variable to modules and load
from there instead.

This does result in a single extra instruction (lui) on the guest exit
path, but simplifies the code a bit and removes the redundant storage of
the host exception base address.

Credit for the idea goes to Cavium's VZ KVM implementation.

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
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-06-14 11:02:44 +02:00
..
.gitignore
8250-platform.c
asm-offsets.c MIPS: KVM: Restore host EBase from ebase variable 2016-06-14 11:02:44 +02:00
binfmt_elfn32.c MIPS: ELF: Unify ABI classification macros 2016-05-13 15:30:25 +02:00
binfmt_elfo32.c MIPS: ELF: Unify ABI classification macros 2016-05-13 15:30:25 +02:00
bmips_5xxx_init.S MIPS: BMIPS: Make whitespacely correct. 2016-05-09 12:00:01 +02:00
bmips_vec.S MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code 2016-05-09 12:00:01 +02:00
branch.c MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
cevt-bcm1480.c MIPS: cevt-bcm1480: Migrate to new 'set-state' interface 2015-09-03 12:07:51 +02:00
cevt-ds1287.c MIPS: cevt-ds1287: Migrate to new 'set-state' interface 2015-09-03 12:07:51 +02:00
cevt-gt641xx.c MIPS: cevt-gt641xx: Migrate to new 'set-state' interface 2015-09-03 12:07:51 +02:00
cevt-r4k.c MIPS: cevt-r4k: Dynamically calculate min_delta_ns 2016-05-13 15:30:25 +02:00
cevt-sb1250.c MIPS: cevt-sb1250: Migrate to new 'set-state' interface 2015-09-03 12:07:52 +02:00
cevt-txx9.c MIPS: cevt-txx9: Migrate to new 'set-state' interface 2015-09-03 12:07:53 +02:00
cps-vec-ns16550.S MIPS: CPS: Early debug using an ns16550-compatible UART 2015-11-11 08:34:25 +01:00
cps-vec.S MIPS: CPS: Copy EVA configuration when starting secondary VPs. 2016-05-28 12:35:05 +02:00
cpu-bugs64.c MIPS: Use EXCCODE_ constants with set_except_vector() 2016-01-24 03:28:21 +01:00
cpu-probe.c MIPS: Fix incomplete separation of XPA CPU feature 2016-05-28 12:35:03 +02:00
crash_dump.c
crash.c MIPS: Fix crash registers on non-crashing CPUs 2016-05-09 12:00:00 +02:00
csrc-bcm1480.c MIPS: csrc-bcm1480: Implement read_sched_clock 2015-04-01 17:21:27 +02:00
csrc-ioasic.c MIPS: csrc-ioasic: Implement read_sched_clock 2015-04-01 17:21:28 +02:00
csrc-r4k.c MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime() 2015-11-11 08:36:41 +01:00
csrc-sb1250.c MIPS: csrc-sb1250: Implement read_sched_clock 2015-04-01 17:21:33 +02:00
early_printk_8250.c
early_printk.c
elf.c MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
entry.S MIPS: kernel: entry.S: Set correct ISA level for mips_ihb 2015-04-10 15:41:46 +02:00
ftrace.c
genex.S MIPS: genex: Indent delay slots & clean whitespace 2016-05-13 14:02:20 +02:00
gpio_txx9.c MIPS: txx9: switch to gpiochip_add_data() 2016-02-19 09:51:44 +01:00
head.S MIPS: Remove redundant asm/pgtable-bits.h inclusions 2016-05-13 15:30:25 +02:00
i8253.c
idle.c MIPS: Loongson: Add Loongson-3A R2 basic support 2016-05-13 14:02:14 +02:00
irq_txx9.c
irq-gt641xx.c
irq-msc01.c
irq-rm7000.c
irq.c MIPS: Clear Status IPL field when using EIC 2016-05-28 12:35:02 +02:00
jump_label.c jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP} 2015-08-03 11:34:12 +02:00
kgdb.c MIPS: Get rid of 'kgdb_early_setup' cruft. 2015-06-21 21:54:10 +02:00
kprobes.c
linux32.c
machine_kexec.c
Makefile MIPS: Kernel: Add relocate.c 2016-05-13 14:02:02 +02:00
mcount.S
mips_ksyms.c MIPS: uaccess: Take EVA into account in [__]clear_user 2015-12-22 11:58:43 +01:00
mips_machine.c
mips-cm.c MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
mips-cpc.c MIPS: CM, CPC: Ensure core-other GCRs reflect the correct core 2015-11-11 08:35:18 +01:00
mips-mt-fpaff.c MIPS: Fix sched_getaffinity with MT FPAFF enabled 2015-08-03 09:25:02 +02:00
mips-mt.c
mips-r2-to-r6-emul.c MIPS: Spelling fix lets -> let's 2016-05-28 12:35:09 +02:00
module-rela.c MIPS: module: fix incorrect IS_ERR_VALUE macro usages 2016-05-13 14:02:11 +02:00
module.c MIPS: module: fix incorrect IS_ERR_VALUE macro usages 2016-05-13 14:02:11 +02:00
octeon_switch.S MIPS: Fix octeon FP context switch handling 2015-10-02 19:16:06 +02:00
perf_event_mipsxx.c MIPS: perf: Fix I6400 event numbers 2016-05-17 11:05:07 +02:00
perf_event.c perf core: Add a 'nr' field to perf_event_callchain_context 2016-05-16 23:11:51 -03:00
pm-cps.c MIPS: pm-cps: Avoid offset overflow on MIPSr6 2016-05-13 14:01:48 +02:00
pm.c MIPS: Fix watchpoint restoration 2016-05-09 12:00:02 +02:00
proc.c MIPS: Detect DSP v3 support 2016-05-13 14:01:57 +02:00
process.c Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-05-28 16:41:39 -07:00
prom.c MIPS: Fix build with CONFIG_OF=y for non OF-enabled targets 2015-08-03 09:25:00 +02:00
ptrace.c MIPS: ptrace: Prevent writes to read-only FCSR bits 2016-05-13 15:30:25 +02:00
ptrace32.c
r4k_fpu.S MIPS: Use copy_s.fmt rather than copy_u.fmt 2016-05-09 12:00:04 +02:00
r4k_switch.S MIPS: Remove redundant asm/pgtable-bits.h inclusions 2016-05-13 15:30:25 +02:00
r2300_fpu.S MIPS: Avoid variant of .type unsupported by LLVM Assembler 2016-02-29 11:23:49 +01:00
r2300_switch.S MIPS: Fix R2300 FP context switch handling 2015-10-02 19:16:46 +02:00
r6000_fpu.S
relocate_kernel.S MIPS: Replace add and sub instructions in relocate_kernel.S with addiu 2015-08-03 15:26:30 +02:00
relocate.c MIPS: Kernel: Implement KASLR using CONFIG_RELOCATABLE 2016-05-13 14:02:03 +02:00
reset.c MIPS: Provide fallback reboot/poweroff/halt implementations 2015-04-01 17:21:58 +02:00
rtlx-cmp.c
rtlx-mt.c
rtlx.c
scall32-o32.S MIPS: scall: Handle seccomp filters which redirect syscalls 2016-05-13 14:02:00 +02:00
scall64-64.S MIPS: scall: Handle seccomp filters which redirect syscalls 2016-05-13 14:02:00 +02:00
scall64-n32.S MIPS: scall: Handle seccomp filters which redirect syscalls 2016-05-13 14:02:00 +02:00
scall64-o32.S MIPS: scall: Handle seccomp filters which redirect syscalls 2016-05-13 14:02:00 +02:00
segment.c MIPS: Declare mips_debugfs_dir in a header 2015-10-26 09:49:42 +01:00
setup.c MIPS: Octeon: detect and fix byte swapped initramfs 2016-05-13 15:30:25 +02:00
signal_n32.c MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
signal-common.h MIPS: Save MSA extended context around signals 2015-09-03 12:07:59 +02:00
signal.c MIPS: Fix sigreturn via VDSO on microMIPS kernel 2016-05-28 12:35:12 +02:00
signal32.c MIPS: Support sending SIG_SYS to 32bit userspace from 64bit kernel 2016-05-13 14:02:00 +02:00
smp-bmips.c MIPS: BMIPS: Add early CPU initialization code 2016-05-13 14:01:55 +02:00
smp-cmp.c MIPS: Make smp CMP, CPS and MT use the new generic IPI functions 2016-02-25 10:56:58 +01:00
smp-cps.c MIPS: smp-cps: Clear Status IPL field when using EIC 2016-05-28 12:35:03 +02:00
smp-gic.c MIPS: CM: make use of mips_cm_{lock,unlock}_other 2015-11-11 08:35:17 +01:00
smp-mt.c MIPS: Make smp CMP, CPS and MT use the new generic IPI functions 2016-02-25 10:56:58 +01:00
smp-up.c
smp.c MIPS: Don't BUG_ON when no IPI domain is found 2016-05-09 12:00:00 +02:00
spinlock_test.c MIPS: Declare mips_debugfs_dir in a header 2015-10-26 09:49:42 +01:00
spram.c MIPS: Add P6600 cases to CPU switch statements 2016-05-13 14:01:52 +02:00
stacktrace.c MIPS: Add LATENCYTOP support 2015-11-11 08:36:46 +01:00
sync-r4k.c MIPS: sync-r4k: reduce skew while synchronization 2016-01-24 01:31:51 +01:00
syscall.c
sysrq.c MIPS: Refactor dumping of TLB registers for r3k/r4k 2015-09-03 12:07:45 +02:00
time.c
topology.c
traps.c MIPS: KVM: Restore host EBase from ebase variable 2016-06-14 11:02:44 +02:00
unaligned.c MIPS: Allow emulation for unaligned [LS]DXC1 instructions 2016-05-13 15:30:25 +02:00
uprobes.c MIPS: Add uprobes support. 2015-09-03 12:08:05 +02:00
vdso.c vdso: make arch_setup_additional_pages wait for mmap_sem for write killable 2016-05-23 17:04:14 -07:00
vmlinux.lds.S MIPS: Reserve space for relocation table 2016-05-13 14:02:02 +02:00
vpe-cmp.c
vpe-mt.c
vpe.c module: use a structure to encapsulate layout. 2015-12-04 22:46:25 +01:00
watch.c MIPS: Add and use watch register field definitions 2016-05-13 14:02:13 +02:00