David Woodhouse a66fe0437d Revert "x86/retpoline: Simplify vmexit_fill_RSB()" ...

commit d1c99108af upstream.

This reverts commit 1dde7415e9. By putting
the RSB filling out of line and calling it, we waste one RSB slot for
returning from the function itself, which means one fewer actual function
call we can make if we're doing the Skylake abomination of call-depth
counting.

It also changed the number of RSB stuffings we do on vmexit from 32,
which was correct, to 16. Let's just stop with the bikeshedding; it
didn't actually *fix* anything anyway.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: arjan.van.de.ven@intel.com
Cc: bp@alien8.de
Cc: dave.hansen@intel.com
Cc: jmattson@google.com
Cc: karahmed@amazon.de
Cc: kvm@vger.kernel.org
Cc: pbonzini@redhat.com
Cc: rkrcmar@redhat.com
Link: http://lkml.kernel.org/r/1519037457-7643-4-git-send-email-dwmw@amazon.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-03-15 10:54:36 +01:00

..

.gitignore

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atomic64_32.c

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atomic64_386_32.S

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atomic64_cx8_32.S

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cache-smp.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

checksum_32.S

x86/retpoline/checksum32: Convert assembler indirect jumps

2018-01-17 09:45:29 +01:00

clear_page_64.S

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cmdline.c

x86/boot: Add early cmdline parsing for options with arguments

2017-07-18 11:38:06 +02:00

cmpxchg8b_emu.S

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cmpxchg16b_emu.S

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copy_page_64.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

copy_user_64.S

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cpu.c

x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping

2018-02-22 15:42:24 +01:00

csum-copy_64.S

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csum-partial_64.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

csum-wrappers_64.c

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delay.c

x86/entry/64: Make cpu_entry_area.tss read-only

2017-12-25 14:26:24 +01:00

getuser.S

x86/get_user: Use pointer masking to limit speculation

2018-02-07 11:12:23 -08:00

hweight.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

inat.c

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insn.c

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iomap_copy_64.S

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kaslr.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile

Revert "x86/retpoline: Simplify vmexit_fill_RSB()"

2018-03-15 10:54:36 +01:00

memcpy_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memcpy_64.S

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memmove_64.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memset_64.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

misc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mmx_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr-reg-export.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr-reg.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr-smp.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

putuser.S

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

retpoline.S

Revert "x86/retpoline: Simplify vmexit_fill_RSB()"

2018-03-15 10:54:36 +01:00

rwsem.S

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string_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

strstr_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

usercopy_32.c

x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec

2018-02-07 11:12:23 -08:00

usercopy_64.c

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usercopy.c

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x86-opcode-map.txt

x86/decoder: Fix and update the opcodes map

2017-12-29 17:53:42 +01:00