Hi Rashmica,
Le 17/11/2016 à 13:03, Michael Ellerman a écrit :
On Fri, 2016-27-05 at 05:48:59 UTC, Rashmica Gupta wrote:
Useful to be able to dump the kernels page tables to check permissions
and memory types - derived from arm64's implementation.
Add a debugfs file to check the page tables. To use this the PPC_PTDUMP
config option must be selected.
Signed-off-by: Rashmica Gupta <rashm...@gmail.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/8eb07b187000d48152c4ef97f075bd
For your information, compilation fails on mpc885_ads_defconfig when we
activate PPC_PTDUMP:
CC arch/powerpc/mm/dump_linuxpagetables.o
arch/powerpc/mm/dump_linuxpagetables.c: In function 'walk_pagetables':
arch/powerpc/mm/dump_linuxpagetables.c:369:10: error: 'KERN_VIRT_START'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:369:10: note: each undeclared
identifier is reported only once for each function it appears in
arch/powerpc/mm/dump_linuxpagetables.c: In function 'populate_markers':
arch/powerpc/mm/dump_linuxpagetables.c:383:37: error: 'ISA_IO_BASE'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:384:37: error: 'ISA_IO_END'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:385:37: error: 'PHB_IO_BASE'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:386:37: error: 'PHB_IO_END'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:387:37: error: 'IOREMAP_BASE'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:388:37: error: 'IOREMAP_END'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:392:38: error: 'VMEMMAP_BASE'
undeclared (first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c: In function 'ptdump_show':
arch/powerpc/mm/dump_linuxpagetables.c:400:20: error: 'KERN_VIRT_START'
undeclared (first use in this function)
make[1]: *** [arch/powerpc/mm/dump_linuxpagetables.o] Error 1
make: *** [arch/powerpc/mm] Error 2
Christophe
