linux-kernel - Re: [kvmtool PATCH v5 02/15] update_headers: arm64: Track psci.h for PSCI definitions

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Message-ID: <aYoCiXg8pSC_bwIv@willie-the-truck>
Date: Mon, 9 Feb 2026 15:51:37 +0000
From: Will Deacon <will@...nel.org>
To: Suzuki K Poulose <suzuki.poulose@....com>
Cc: kvmarm@...ts.linux.dev, kvm@...r.kernel.org, maz@...nel.org,
	oupton@...nel.org, aneesh.kumar@...nel.org, steven.price@....com,
	linux-kernel@...r.kernel.org, alexandru.elisei@....com,
	tabba@...gle.com
Subject: Re: [kvmtool PATCH v5 02/15] update_headers: arm64: Track psci.h for
 PSCI definitions

On Thu, Jan 08, 2026 at 05:57:40PM +0000, Suzuki K Poulose wrote:
> Track UAPI psci.h for PSCI definitions
> 
> Reviewed-by: Marc Zyngier <maz@...nel.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
> ---
>  util/update_headers.sh | 17 ++++++++++-------
>  1 file changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/util/update_headers.sh b/util/update_headers.sh
> index af75ca36..9fe782a2 100755
> --- a/util/update_headers.sh
> +++ b/util/update_headers.sh
> @@ -37,13 +37,16 @@ done
>  
>  unset KVMTOOL_PATH
>  
> -copy_optional_arch () {
> -	local src="$LINUX_ROOT/arch/$arch/include/uapi/$1"
> +copy_arm64_headers () {
> +	local uapi_asm_hdr="$LINUX_ROOT/arch/$arch/include/uapi/asm"
>  
> -	if [ -r "$src" ]
> -	then
> -		cp -- "$src" "$KVMTOOL_PATH/include/asm/"
> -	fi
> +	for f in sve_context.h psci.h
> +	do
> +		if [ -r "$uapi_asm_hdr/$f" ]
> +		then
> +			cp -- "$uapi_asm_hdr/$f" "$KVMTOOL_PATH/include/asm/"
> +		fi
> +	done

This doesn't make sense to me as I don't think we've ever had an
arm64 uapi/asm/psci.h. You presumably want linux/psci.h (which is what
the next patch pulls in), but then I don't understand how that worked
with the change you've got here :/

For now, I'll apply the first patch and then update the headers to 6.19
myself using the current script (as other folks need them updating too).

Will