linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2019-11-13	powerpc/watchpoint: Fix length calculation for unaligned target	Ravi Bangoria	1	-3/+3
	Watchpoint match range is always doubleword(8 bytes) aligned on powerpc. If the given range is crossing doubleword boundary, we need to increase the length such that next doubleword also get covered. Ex, address len = 6 bytes \|=========. \|------------v--\|------v--------\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|---------------\|---------------\| <---8 bytes---> In such case, current code configures hw as: start_addr = address & ~HW_BREAKPOINT_ALIGN len = 8 bytes And thus read/write in last 4 bytes of the given range is ignored. Fix this by including next doubleword in the length. Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191017093204.7511-3-ravi.bangoria@linux.ibm.com
2019-07-03	powerpc: Fix compile issue with force DAWR	Michael Neuling	1	-0/+101
	If you compile with KVM but without CONFIG_HAVE_HW_BREAKPOINT you fail at linking with: arch/powerpc/kvm/book3s_hv_rmhandlers.o:(.text+0x708): undefined reference to `dawr_force_enable' This was caused by commit c1fe190c0672 ("powerpc: Add force enable of DAWR on P9 option"). This moves a bunch of code around to fix this. It moves a lot of the DAWR code in a new file and creates a new CONFIG_PPC_DAWR to enable compiling it. Fixes: c1fe190c0672 ("powerpc: Add force enable of DAWR on P9 option") Signed-off-by: Michael Neuling <mikey@neuling.org> [mpe: Minor formatting in set_dawr()] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>