linux-kernel - Re: [PATCH v3 00/21] Enable CET Virtualization

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Message-ID: <e986331e-c084-ed66-fb78-e4cced1f2ae5@intel.com>
Date:   Thu, 20 Jul 2023 09:58:34 +0800
From:   "Yang, Weijiang" <weijiang.yang@...el.com>
To:     Sean Christopherson <seanjc@...gle.com>
CC:     <pbonzini@...hat.com>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <peterz@...radead.org>,
        <rppt@...nel.org>, <binbin.wu@...ux.intel.com>,
        <rick.p.edgecombe@...el.com>, <john.allen@....com>,
        Chao Gao <chao.gao@...el.com>
Subject: Re: [PATCH v3 00/21] Enable CET Virtualization


On 7/20/2023 4:26 AM, Sean Christopherson wrote:
> On Wed, Jul 19, 2023, Sean Christopherson wrote:
>> On Mon, Jul 17, 2023, Weijiang Yang wrote:
>>> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
>>> index e2c549f147a5..7d9cfb7e2fe8 100644
>>> --- a/arch/x86/kvm/x86.c
>>> +++ b/arch/x86/kvm/x86.c
>>> @@ -11212,6 +11212,31 @@ static void kvm_put_guest_fpu(struct kvm_vcpu
>>> *vcpu)
>>> ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ trace_kvm_fpu(0);
>>> ï¿½}
> Huh.  After a bit of debugging, the mangling is due to mutt's default for send_charset
> being
>
>    "us-ascii:iso-8859-1:utf-8"
>
> and selecting iso-8859-1 instead of utf-8 as the encoding despite the original
> mail being utf-8.  In this case, mutt ran afoul of nbsp (u+00a0).
>
> AFAICT, the solution is to essentially tell mutt to never try to use iso-8859-1
> for sending mail
>
>    set send_charset="us-ascii:utf-8"

It made me feel a bit guilty as I thought it could be resulted from 
wrong settings of my email system :-)