linux-kernel - Re: [PATCH v4 21/28] KVM: TDX: Add macro to retry SEAMCALLs when forcing vCPUs out of guest

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Message-ID: <d02eb1bbd62621655365aaf5b1f3765aaf1a9e7d.camel@intel.com>
Date: Thu, 30 Oct 2025 23:05:09 +0000
From: "Huang, Kai" <kai.huang@...el.com>
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Subject: Re: [PATCH v4 21/28] KVM: TDX: Add macro to retry SEAMCALLs when
 forcing vCPUs out of guest

On Thu, 2025-10-30 at 13:09 -0700, Sean Christopherson wrote:
> Add a macro to handle kicking vCPUs out of the guest and retrying
> SEAMCALLs on -EBUSY instead of providing small helpers to be used by each
	       ^
Nit: maybe TDX_OPERAND_BUSY to be more accurate, but feel free to ignore.

> SEAMCALL.  Wrapping the SEAMCALLs in a macro makes it a little harder to
> tease out which SEAMCALL is being made, but significantly reduces the
> amount of copy+paste code and makes it all but impossible to leave an
> elevated wait_for_sept_zap.
> 
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>

Reviewed-by: Kai Huang <kai.huang@...el.com>