linux/arch/x86
Linus Torvalds 4477b39c32 minmax: add a few more MIN_T/MAX_T users
Commit 3a7e02c040 ("minmax: avoid overly complicated constant
expressions in VM code") added the simpler MIN_T/MAX_T macros in order
to avoid some excessive expansion from the rather complicated regular
min/max macros.

The complexity of those macros stems from two issues:

 (a) trying to use them in situations that require a C constant
     expression (in static initializers and for array sizes)

 (b) the type sanity checking

and MIN_T/MAX_T avoids both of these issues.

Now, in the whole (long) discussion about all this, it was pointed out
that the whole type sanity checking is entirely unnecessary for
min_t/max_t which get a fixed type that the comparison is done in.

But that still leaves min_t/max_t unnecessarily complicated due to
worries about the C constant expression case.

However, it turns out that there really aren't very many cases that use
min_t/max_t for this, and we can just force-convert those.

This does exactly that.

Which in turn will then allow for much simpler implementations of
min_t()/max_t().  All the usual "macros in all upper case will evaluate
the arguments multiple times" rules apply.

We should do all the same things for the regular min/max() vs MIN/MAX()
cases, but that has the added complexity of various drivers defining
their own local versions of MIN/MAX, so that needs another level of
fixes first.

Link: https://lore.kernel.org/all/b47fad1d0cf8449886ad148f8c013dae@AcuMS.aculab.com/
Cc: David Laight <David.Laight@aculab.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-07-28 13:41:14 -07:00
..
boot Kbuild updates for v6.11 2024-07-23 14:32:21 -07:00
coco - Add support for running the kernel in a SEV-SNP guest, over a Secure 2024-07-16 11:12:25 -07:00
configs hardening: Enable KCFI and some other options 2024-05-01 12:38:14 -07:00
crypto crypto: x86/aes-gcm - rewrite the AES-NI optimized AES-GCM 2024-06-07 19:47:58 +08:00
entry Random number generator updates for Linux 6.11-rc1. 2024-07-24 10:29:50 -07:00
events Performance events changes for v6.11: 2024-07-16 17:13:31 -07:00
hyperv x86/mm: Make x86_platform.guest.enc_status_change_*() return an error 2024-06-17 17:45:53 +02:00
ia32
include xen: branch for v6.11-rc1a 2024-07-27 09:58:24 -07:00
kernel sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
kvm ARM: 2024-07-20 12:41:03 -07:00
lib - Make error checking of AMD SMN accesses more robust in the callers as 2024-07-15 19:53:07 -07:00
math-emu x86/math-emu: Fix function cast warnings 2024-04-08 16:06:22 +02:00
mm minmax: add a few more MIN_T/MAX_T users 2024-07-28 13:41:14 -07:00
net bpf: remove unused parameter in bpf_jit_binary_pack_finalize 2024-06-20 19:50:26 -07:00
pci - Flip the logic to add feature names to /proc/cpuinfo to having to 2024-07-15 20:25:16 -07:00
platform xen: branch for v6.11-rc1a 2024-07-27 09:58:24 -07:00
power
purgatory Kbuild updates for v6.10 2024-05-18 12:39:20 -07:00
ras
realmode Makefile: remove redundant tool coverage variables 2024-05-14 23:35:48 +09:00
tools Changes: 2024-05-19 11:32:42 -07:00
um This pull request contains the following changes for UML: 2024-07-25 12:33:08 -07:00
video arch: Fix name collision with ACPI's video.o 2024-05-20 21:17:06 +00:00
virt - Add support for running the kernel in a SEV-SNP guest, over a Secure 2024-07-16 11:12:25 -07:00
xen xen: branch for v6.11-rc1a 2024-07-27 09:58:24 -07:00
.gitignore
Kbuild
Kconfig Random number generator updates for Linux 6.11-rc1. 2024-07-24 10:29:50 -07:00
Kconfig.assembler x86/kconfig: Add as-instr64 macro to properly evaluate AS_WRUSS 2024-06-20 19:48:18 +02:00
Kconfig.cpu
Kconfig.debug x86/kconfig: Select ARCH_WANT_FRAME_POINTERS again when UNWINDER_FRAME_POINTER=y 2024-05-20 11:37:23 +02:00
Makefile - A series ("kbuild: enable more warnings by default") from Arnd 2024-05-22 18:59:29 -07:00
Makefile_32.cpu
Makefile.postlink
Makefile.um arch: um: rust: Use the generated target.json again 2024-07-03 12:22:11 +02:00