diff options
| author | Sohil Mehta <sohil.mehta@intel.com> | 2025-02-19 18:41:28 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-05-29 11:02:11 +0200 |
| commit | 8973fb71c9269f54f4ea4b218c8466b5adea8a97 (patch) | |
| tree | d638c8215b34f0313dd0292818e5a70cb9ff25af /arch/x86/kernel/cpu/microcode/intel.c | |
| parent | 44e041675383b198e4050177df372361a872147b (diff) | |
x86/smpboot: Fix INIT delay assignment for extended Intel Families
[ Upstream commit 7a2ad752746bfb13e89a83984ecc52a48bae4969 ]
Some old crusty CPUs need an extra delay that slows down booting. See
the comment above 'init_udelay' for details. Newer CPUs don't need the
delay.
Right now, for Intel, Family 6 and only Family 6 skips the delay. That
leaves out both the Family 15 (Pentium 4s) and brand new Family 18/19
models.
The omission of Family 15 (Pentium 4s) seems like an oversight and 18/19
do not need the delay.
Skip the delay on all Intel processors Family 6 and beyond.
Signed-off-by: Sohil Mehta <sohil.mehta@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250219184133.816753-11-sohil.mehta@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu/microcode/intel.c')
0 files changed, 0 insertions, 0 deletions