Re: ia64 removal (was: Re: lockref scalability on x86-64 vs cpu_relax)

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Hello Ard!

Can I take that as an ack on [0]? The EFI subsystem has evolved
substantially over the years, and there is really no way to do any
IA64 testing beyond build testing, so from that perspective, dropping
it entirely would be welcomed.

ia64 is regularly tested in Debian and Gentoo [1][2].

Debian's ia64 porterbox yttrium runs a recent kernel without issues:

root@yttrium:~# uname -a
Linux yttrium 5.19.0-2-mckinley #1 SMP Debian 5.19.11-1 (2022-09-24) ia64 GNU/Linux
root@yttrium:~#

root@yttrium:~# journalctl -b|head -n10
Nov 14 14:46:10 yttrium kernel: Linux version 5.19.0-2-mckinley (debian-kernel@xxxxxxxxxxxxxxxx) (gcc-11 (Debian 11.3.0-6) 11.3.0, GNU ld (GNU Binutils for Debian) 2.39) #1 SMP Debian 5.19.11-1 (2022-09-24)
Nov 14 14:46:10 yttrium kernel: efi: EFI v2.10 by HP
Nov 14 14:46:10 yttrium kernel: efi: SALsystab=0xdfdd63a18 ESI=0xdfdd63f18 ACPI 2.0=0x3d3c4014 HCDP=0xdffff8798 SMBIOS=0x3d368000
Nov 14 14:46:10 yttrium kernel: PCDP: v3 at 0xdffff8798
Nov 14 14:46:10 yttrium kernel: earlycon: uart8250 at I/O port 0x4000 (options '115200n8')
Nov 14 14:46:10 yttrium kernel: printk: bootconsole [uart8250] enabled
Nov 14 14:46:10 yttrium kernel: ACPI: Early table checksum verification disabled
Nov 14 14:46:10 yttrium kernel: ACPI: RSDP 0x000000003D3C4014 000024 (v02 HP    )
Nov 14 14:46:10 yttrium kernel: ACPI: XSDT 0x000000003D3C4580 000124 (v01 HP     RX2800-2 00000001      01000013)
Nov 14 14:46:10 yttrium kernel: ACPI: FACP 0x000000003D3BE000 0000F4 (v03 HP     RX2800-2 00000001 HP   00000001)
root@yttrium:~#

Same applies to the buildds:

root@lifshitz:~# uname -a
Linux lifshitz 6.0.0-4-mckinley #1 SMP Debian 6.0.8-1 (2022-11-11) ia64 GNU/Linux
root@lifshitz:~#

root@lenz:~# uname -a
Linux lenz 6.0.0-4-mckinley #1 SMP Debian 6.0.8-1 (2022-11-11) ia64 GNU/Linux
root@lenz:~#

EFI works fine as well using the latest version of GRUB2.

Thanks,
Adrian

[1] https://cdimage.debian.org/cdimage/ports/snapshots/
[2] https://mirror.yandex.ru/gentoo-distfiles//releases/ia64/autobuilds/



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