From c0c6cd156c1239cd199a3bc083f1924518dd02a6 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Sat, 22 Jun 2019 23:15:18 +1000 Subject: [PATCH] powerpc/64s/exception: KVM handler can set the HSRR trap bit Move the KVM trap HSRR bit into the KVM handler, which can be conditionally applied when hsrr parameter is set. No generated code change. Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/exception-64s.h | 5 +++++ arch/powerpc/include/asm/head-64.h | 7 ++----- 2 files changed, 7 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index d2a5bbe..a7b5145 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -454,7 +454,12 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) ld r10,\area+EX_R10(r13) std r12,HSTATE_SCRATCH0(r13) sldi r12,r9,32 + /* HSRR variants have the 0x2 bit added to their trap number */ + .if \hsrr + ori r12,r12,(\n + 0x2) + .else ori r12,r12,(\n) + .endif /* This reloads r9 before branching to kvmppc_interrupt */ __BRANCH_TO_KVM_EXIT(\area, kvmppc_interrupt) diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h index 518d975..bdd67a2 100644 --- a/arch/powerpc/include/asm/head-64.h +++ b/arch/powerpc/include/asm/head-64.h @@ -393,16 +393,13 @@ name: TRAMP_KVM_BEGIN(do_kvm_##n); \ KVM_HANDLER area, EXC_STD, n, 1 -/* - * HV variant exceptions get the 0x2 bit added to their trap number. - */ #define TRAMP_KVM_HV(area, n) \ TRAMP_KVM_BEGIN(do_kvm_H##n); \ - KVM_HANDLER area, EXC_HV, n + 0x2, 0 + KVM_HANDLER area, EXC_HV, n, 0 #define TRAMP_KVM_HV_SKIP(area, n) \ TRAMP_KVM_BEGIN(do_kvm_H##n); \ - KVM_HANDLER area, EXC_HV, n + 0x2, 1 + KVM_HANDLER area, EXC_HV, n, 1 #define EXC_COMMON(name, realvec, hdlr) \ EXC_COMMON_BEGIN(name); \ -- 2.7.4