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s390: make sie intercept independent of thread_info

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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>
This commit is contained in:
Martin Schwidefsky
2012-05-09 16:27:36 +02:00
parent b603d258a4
commit 6022afc060
1 changed files with 6 additions and 6 deletions
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12
arch/s390/kernel/entry64.S
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@@ -81,16 +81,16 @@ _TIF_EXIT_SIE = (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_MCCK_PENDING)
.macro HANDLE_SIE_INTERCEPT scratch .macro HANDLE_SIE_INTERCEPT scratch
#if defined(CONFIG_KVM) || defined(CONFIG_KVM_MODULE) #if defined(CONFIG_KVM) || defined(CONFIG_KVM_MODULE)
tm __TI_flags+6(%r12),_TIF_SIE>>8 tmhh %r8,0x0001 # interrupting from user ?
jz .+42 jnz .+42
tm __LC_MACHINE_FLAGS+6,0x20 # MACHINE_FLAG_SPP
jz .+8
.insn s,0xb2800000,BASED(.Lhost_id) # set host id
lgr \scratch,%r9 lgr \scratch,%r9
slg \scratch,BASED(.Lsie_loop) slg \scratch,BASED(.Lsie_loop)
clg \scratch,BASED(.Lsie_length) clg \scratch,BASED(.Lsie_length)
jhe .+10 jhe .+22
lg %r9,BASED(.Lsie_loop) 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 #endif
.endm .endm