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Commit 1339734b authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "arm64: Add TLB conflict fault handler"

parents 5de64233 d99faaa6

arch/arm64/mm/fault.c

+19 −1
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ 
#include <asm/tlbflush.h>

#include <asm/kryo-arm64-edac.h>

#include <asm/traps.h>

#include <soc/qcom/scm.h>



#include <acpi/ghes.h>
@@ -601,6 +602,23 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr, 
	return 0;

}



static int do_tlb_conf_fault(unsigned long addr,

				unsigned int esr,

				struct pt_regs *regs)

{

#define SCM_TLB_CONFLICT_CMD	0x1B

	struct scm_desc desc = {

		.args[0] = addr,

		.arginfo = SCM_ARGS(1),

	};



	if (scm_call2_atomic(SCM_SIP_FNID(SCM_SVC_MP, SCM_TLB_CONFLICT_CMD),

						&desc))

		return 1;



	return 0;

}



static int __kprobes do_translation_fault(unsigned long addr,

					  unsigned int esr,

					  struct pt_regs *regs)
@@ -709,7 +727,7 @@ static const struct fault_info fault_info[] = { 
	{ do_bad,		SIGKILL, SI_KERNEL,	"unknown 45"			},

	{ do_bad,		SIGKILL, SI_KERNEL,	"unknown 46"			},

	{ do_bad,		SIGKILL, SI_KERNEL,	"unknown 47"			},

	{ do_bad,		SIGKILL, SI_KERNEL,	"TLB conflict abort"		},

	{ do_tlb_conf_fault,	SIGKILL, SI_KERNEL,	"TLB conflict abort"},

	{ do_bad,		SIGKILL, SI_KERNEL,	"Unsupported atomic hardware update fault"	},

	{ do_bad,		SIGKILL, SI_KERNEL,	"unknown 50"			},

	{ do_bad,		SIGKILL, SI_KERNEL,	"unknown 51"			},