Thread (54 messages) 54 messages, 4 authors, 2021-01-24

Re: [PATCH v4 12/21] arm64: cpufeature: Add an early command-line cpufeature override facility

From: Catalin Marinas <catalin.marinas@arm.com>
Date: 2021-01-23 13:45:36
Also in: kvmarm, lkml

On Mon, Jan 18, 2021 at 09:45:24AM +0000, Marc Zyngier wrote:
+struct reg_desc {
+	const char * const	name;
+	u64 * const		val;
+	u64 * const		mask;
+	struct {
+		const char * const	name;
+		u8			 shift;
+	} 			fields[];
+};
Sorry, I didn't see this earlier. Do we need to add all these consts
here? So you want the pointers to be const but why is 'shift' special
and not a const then? Is it modified later?

Would this not work:

struct reg_desc {
	const char	*name;
	u64		*val;
	u64		*mask;
	struct {
		const char	*name;
		u8		shift;
	} fields[];
};
+static const struct reg_desc * const regs[] __initdata = {
as we already declare the whole struct reg_desc pointers here as const.
I may have confused myself...

-- 
Catalin

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