[PATCH v3 2/6] arm: Invalidate BTB on prefetch abort outside of user mapping on Cortex A8, A9, A12 and A17
flat view
STALE3176d
From: festevam@gmail.com (Fabio Estevam)
Date: 2018-01-31 02:13:19
Hi Marc, On Thu, Jan 25, 2018 at 1:21 PM, Marc Zyngier [off-list ref] wrote:
quoted hunk ↗ jump to hunk
--- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c@@ -21,6 +21,7 @@ #include <linux/highmem.h> #include <linux/perf_event.h> +#include <asm/cp15.h> #include <asm/exception.h> #include <asm/pgtable.h> #include <asm/system_misc.h>@@ -181,6 +182,7 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr, si.si_errno = 0; si.si_code = code; si.si_addr = (void __user *)addr; +
Unneeded blank line.
quoted hunk ↗ jump to hunk
force_sig_info(sig, &si, tsk); }@@ -396,12 +398,35 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) __do_kernel_fault(mm, addr, fsr, regs); return 0; } + +static int +do_pabt_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) +{ + if (addr > TASK_SIZE) { + switch(read_cpuid_part()) {
checkpatch complains here:
ERROR: space required before the open parenthesis '('
#62: FILE: arch/arm/mm/fault.c:406:
+ switch(read_cpuid_part()) {