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Date: Fri, 18 Mar 2022 17:43:01 -0500 From: Mike Travis <mike.travis@....com> To: Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, Steve Wahl <steve.wahl@....com>, x86@...nel.org Cc: Mike Travis <mike.travis@....com>, Andy Shevchenko <andy@...radead.org>, Darren Hart <dvhart@...radead.org>, Dimitri Sivanich <dimitri.sivanich@....com>, "H. Peter Anvin" <hpa@...or.com>, Russ Anderson <russ.anderson@....com>, linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org Subject: [PATCH v3 0/3] x86/platform/uv: UV Kernel support for UV5 v2: Delete patch to remove SCRATCH 5 NMI support check mainly for UV2 and UV3k systems with old NMI support function. v3: Fix check BIOS NMI support mistake in Patch 1. Update NMI setup for UV5 Update NMI handler to interface with UV5 hardware. This involves changing the EVENT_OCCURRED MMR used by the hardware and removes the check for which NMI function is supported by UV BIOS. The newer NMI function is assumed supported on UV5 and above. Update TSC sync check for UV5 Update TSC to not check TSC sync state for uv5+ as it is not available. It is assumed that TSC will always be in sync for multiple chassis and will pass the tests for the kernel to accept it as the clocksource. To disable this check use the kernel start options tsc=reliable clocksource=tsc. Log gap hole end size Show value of gap end in the kernel log which equates to number of physical address bits used by system. The end address of the gap holds PA bits 56:26 which gives the range up to 64PB max size with 64MB of granularity. Mike Travis (3): x86/platform/uv: Update NMI Handler for UV5 x86/platform/uv: Update TSC sync state for UV5 x86/platform/uv: Log gap hole end size arch/x86/kernel/apic/x2apic_uv_x.c | 20 +++++++++++++++----- arch/x86/platform/uv/uv_nmi.c | 21 +++++++++++---------- 2 files changed, 26 insertions(+), 15 deletions(-) -- 2.26.2
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