Commit b6adc6d6 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

powerpc/build: move .data.rel.ro, .sdata2 to read-only 



.sdata2 is a readonly small data section for ppc32, and .data.rel.ro
is data that needs relocating but is read-only after that so these
can both be moved to the read only memory region.

Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220916040755.2398112-5-npiggin@gmail.com
parent f21ba449

arch/powerpc/kernel/vmlinux.lds.S

+12 −8
Original line number Diff line number Diff line
@@ -135,6 +135,16 @@ SECTIONS 
	/* Read-only data */

	RO_DATA(PAGE_SIZE)



#ifdef CONFIG_PPC32

	.sdata2 : AT(ADDR(.sdata2) - LOAD_OFFSET) {

		*(.sdata2)

	}

#endif



	.data.rel.ro : AT(ADDR(.data.rel.ro) - LOAD_OFFSET) {

		*(.data.rel.ro*)

	}



	.branch_lt : AT(ADDR(.branch_lt) - LOAD_OFFSET) {

		*(.branch_lt)

	}
@@ -349,19 +359,13 @@ SECTIONS 
	. = ALIGN(PAGE_SIZE);

	_sdata = .;



#ifdef CONFIG_PPC32

	.data : AT(ADDR(.data) - LOAD_OFFSET) {

		DATA_DATA

		*(.data.rel*)

#ifdef CONFIG_PPC32

		*(SDATA_MAIN)

		*(.sdata2)

	}

#else

	.data : AT(ADDR(.data) - LOAD_OFFSET) {

		DATA_DATA

		*(.data.rel*)

	}

#endif

	}



	/* The initial task and kernel stack */

	INIT_TASK_DATA_SECTION(THREAD_ALIGN)