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Re: [PATCH v10 03/38] x86/msr: Add the WRMSRNS instruction support
- To: andrew.cooper3@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Xin Li <xin3.li@xxxxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-edac@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Fri, 15 Sep 2023 07:32:02 +0200
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- Cc: mingo@xxxxxxxxxx, bp@xxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, luto@xxxxxxxxxx, pbonzini@xxxxxxxxxx, seanjc@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, ravi.v.shankar@xxxxxxxxx, mhiramat@xxxxxxxxxx, jiangshanlai@xxxxxxxxx
- Delivery-date: Fri, 15 Sep 2023 05:32:08 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 15.09.23 03:16, andrew.cooper3@xxxxxxxxxx wrote:
On 15/09/2023 2:01 am, H. Peter Anvin wrote:
The whole bit with alternatives and pvops being separate is a major
maintainability problem, and honestly it never made any sense in the
first place. Never have two mechanisms to do one job; it makes it
harder to grok their interactions.
This bit is easy.
Juergen has already done the work to delete one of these two patching
mechanisms and replace it with the other.
https://lore.kernel.org/lkml/a32e211f-4add-4fb2-9e5a-480ae9b9bbf2@xxxxxxxx/
Unfortunately, it's only collecting pings and tumbleweeds.
Indeed.
Unfortunately there is probably some objtool support needed for that, which I'm
not sure how to implement.
Juergen
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