gsb_crc32.c: avoid gcc -Wunused-const-variable in user build

Fixup after
56e9a0136f87 gsb_crc32: Fix a warning when compiled in userland.

Reviewed by: kib
Differential Revision: https://reviews.fre

gsb_crc32.c: avoid gcc -Wunused-const-variable in user build

Fixup after
56e9a0136f87 gsb_crc32: Fix a warning when compiled in userland.

Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D45824

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sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remov

sys: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

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sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

gsb_crc32: Fix a warning when compiled in userland.

crc32_tab[] is only exposed as a global in <sys/gsb_crc32.h> for the
kernel, not for userland.

Sponsored by: Chelsio Communications
Differential

gsb_crc32: Fix a warning when compiled in userland.

crc32_tab[] is only exposed as a global in <sys/gsb_crc32.h> for the
kernel, not for userland.

Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D40614

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Switch to an ifunc in the kernel for crc32c

There is no need to read the same variable to check if the CPU supports
crc32c instructions.

Reviewed by: arichardson, kib, markj
Sponsored by: The FreeB

Switch to an ifunc in the kernel for crc32c

There is no need to read the same variable to check if the CPU supports
crc32c instructions.

Reviewed by: arichardson, kib, markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31274

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tests/sys/kern/crc32: Check for SSE4.2 before using it

This avoids a SIGILL when running these tests on QEMU (which
defaults to a basic amd64 CPU without SSE4.2).

This commit also tests the table-b

tests/sys/kern/crc32: Check for SSE4.2 before using it

This avoids a SIGILL when running these tests on QEMU (which
defaults to a basic amd64 CPU without SSE4.2).

This commit also tests the table-based implementations in addition to
testing the hw-accelerated crc32 versions.

Reviewed By: cem, kib, markj
Differential Revision: https://reviews.freebsd.org/D28395

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arm64: check for CRC32 support via HWCAP

Doing it this way eliminates the assumption about homogeneous support
for the feature, since HWCAP values are only set if support is present
on all CPUs.

Re

arm64: check for CRC32 support via HWCAP

Doing it this way eliminates the assumption about homogeneous support
for the feature, since HWCAP values are only set if support is present
on all CPUs.

Reviewed by: tuexen, markj
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D26032

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libkern: clean up empty lines in .c and .h files

Smaller crc for the boot loader.

Save 7k of text space by using simpler crc32 for standalone case. we
don't need all that fancy optimization in the boot loader, so use a
simplified version of the CR

Smaller crc for the boot loader.

Save 7k of text space by using simpler crc32 for standalone case. we
don't need all that fancy optimization in the boot loader, so use a
simplified version of the CRC function. We could save more by doing it
one bit at a time rather than 32, but this is the biggest savings at
the smallest performance hit.

With LUA and verfied exec, gptboot, gptzfsboot and friends are pushing
the ~530k limit and every little bit helps.

Reviewed By: allanjude
Differential Revision: https://reviews.freebsd.org/D24225

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Rename the macros to extract a single arm64 ID field.

Because of the previous naming scheme the old ID_AA64PFR0_EL1 macro
collided with a potential macro for the register of the same name. To fix
th

Rename the macros to extract a single arm64 ID field.

Because of the previous naming scheme the old ID_AA64PFR0_EL1 macro
collided with a potential macro for the register of the same name. To fix
this collision rename these macros.

Sponsored by: DARPA, AFRL

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MFHead @349234

Sponsored by: The FreeBSD Foundation

Separate kernel crc32() implementation to its own header (gsb_crc32.h) and
rename the source to gsb_crc32.c.

This is a prerequisite of unifying kernel zlib instances.

PR: 229763
Submitted by: Yosh

Separate kernel crc32() implementation to its own header (gsb_crc32.h) and
rename the source to gsb_crc32.c.

This is a prerequisite of unifying kernel zlib instances.

PR: 229763
Submitted by: Yoshihiro Ota <ota at j.email.ne.jp>
Differential Revision: https://reviews.freebsd.org/D20193

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