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Commit 8c2c596f authored by Mark Rutland's avatar Mark Rutland Committed by Will Deacon
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arm64: entry: remove unused register aliases 



In commit:

  3b714275 ("arm64: convert native/compat syscall entry to C")

... we moved the syscall invocation code from assembly to C, but left
behind a number of register aliases which are now unused.

Let's remove them before they confuse someone.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: default avatarDave Martin <Dave.Martin@arm.com>
Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 1236cd2b

arch/arm64/kernel/entry.S

+1 −11
Original line number Original line Diff line number Diff line
@@ -392,17 +392,7 @@ alternative_insn eret, nop, ARM64_UNMAP_KERNEL_AT_EL0 
	mov	sp, x19

	mov	sp, x19

	.endm

	.endm





/*

/* GPRs used by entry code */

 * These are the registers used in the syscall handler, and allow us to

 * have in theory up to 7 arguments to a function - x0 to x6.

 *

 * x7 is reserved for the system call number in 32-bit mode.

 */

wsc_nr	.req	w25		// number of system calls

xsc_nr	.req	x25		// number of system calls (zero-extended)

wscno	.req	w26		// syscall number

xscno	.req	x26		// syscall number (zero-extended)

stbl	.req	x27		// syscall table pointer

tsk	.req	x28		// current thread_info

tsk	.req	x28		// current thread_info





/*

/*