s390: make sie intercept independent of thread_info (6022afc0) · Commits · 戴 / test

HANDLE_SIE_INTERCEPT is called early, use supervisor state and instruction address to decide if the reset of the PSW to sie_loop is required. Signed-off-by:

Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/kernel/entry64.S

+6 −6

Original line number	Diff line number	Diff line
		@@ -81,16 +81,16 @@ _TIF_EXIT_SIE = (_TIF_SIGPENDING \| _TIF_NEED_RESCHED \| _TIF_MCCK_PENDING)

		.macro HANDLE_SIE_INTERCEPT scratch
		#if defined(CONFIG_KVM) \|\| defined(CONFIG_KVM_MODULE)
		tm __TI_flags+6(%r12),_TIF_SIE>>8
		jz .+42
		tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_SPP
		jz .+8
		.insn s,0xb2800000,BASED(.Lhost_id) # set host id
		tmhh %r8,0x0001 # interrupting from user ?
		jnz .+42
		lgr \scratch,%r9
		slg \scratch,BASED(.Lsie_loop)
		clg \scratch,BASED(.Lsie_length)
		jhe .+10
		jhe .+22
		lg %r9,BASED(.Lsie_loop)
		tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_SPP
		jz .+8
		.insn s,0xb2800000,BASED(.Lhost_id) # set host id
		#endif
		.endm

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