[GIT PULL] x86/cpu updates for v6.4-rc1

From: Borislav Petkov
Date: Mon Apr 24 2023 - 09:54:19 EST


Hi Linus,

please pull the x86/cpu updates for 6.4.

Thx.

---

The following changes since commit fe15c26ee26efa11741a7b632e9f23b01aca4cc6:

Linux 6.3-rc1 (2023-03-05 14:52:03 -0800)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_cpu_for_v6.4_rc1

for you to fetch changes up to 36168bc061b4368ad19e82b06a6463c95d3bb9a7:

x86/cpu: Add Xeon Emerald Rapids to list of CPUs that support PPIN (2023-04-05 20:01:52 +0200)

----------------------------------------------------------------
- Add Emerald Rapids to the list of Intel models supporting PPIN

- Finally use a CPUID bit for split lock detection instead of
enumerating every model

- Make sure automatic IBRS is set on AMD, even though the AP bringup
code does that now by replicating the MSR which contains the switch

----------------------------------------------------------------
Borislav Petkov (AMD) (1):
x86/CPU/AMD: Make sure EFER[AIBRSE] is set

Fenghua Yu (1):
x86/split_lock: Enumerate architectural split lock disable bit

Tony Luck (1):
x86/cpu: Add Xeon Emerald Rapids to list of CPUs that support PPIN

arch/x86/kernel/cpu/amd.c | 11 +++++++++
arch/x86/kernel/cpu/bugs.c | 10 +-------
arch/x86/kernel/cpu/common.c | 1 +
arch/x86/kernel/cpu/cpu.h | 8 ++++++
arch/x86/kernel/cpu/intel.c | 59 +++++++++++++++++---------------------------
5 files changed, 43 insertions(+), 46 deletions(-)

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette