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Date: Fri, 30 Aug 2024 18:14:45 +0200
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
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	Nicholas Piggin <npiggin@gmail.com>,
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	Justin Stitt <justinstitt@google.com>,
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	Adhemerval Zanella <adhemerval.zanella@linaro.org>,
	Xi Ruoyao <xry111@xry111.site>
Subject: Re: [PATCH v3 4/5] powerpc/vdso: Wire up getrandom() vDSO
 implementation on PPC32
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References: <cover.1725031952.git.christophe.leroy@csgroup.eu>
 <e7e4c6d36cf98229850c333f113bcea909564501.1725031952.git.christophe.leroy@csgroup.eu>
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In-Reply-To: <e7e4c6d36cf98229850c333f113bcea909564501.1725031952.git.christophe.leroy@csgroup.eu>

On Fri, Aug 30, 2024 at 05:57:08PM +0200, Christophe Leroy wrote:
> + *	r5: 8-byte counter input/output (saved on stack)
> + *
> + *	r14-r15: counter
> + */
> +SYM_FUNC_START(__arch_chacha20_blocks_nostack)
> +	stwu	r1, -96(r1)
> +	stw	r5, 20(r1)
> +	stmw	r14, 24(r1)
> +	li	r31, 4
> +	LWZX_LE	r14, 0, r5
> +	LWZX_LE	r15, r31, r5

Why swap endian on the counter?