| Message ID | 20170815.213012.1915139092516231059.davem@davemloft.net |
|---|---|
| State | Accepted |
| Delegated to: | David Miller |
| Headers | show |
On Wed, Aug 16, 2017 at 7:30 AM, David Miller <davem@davemloft.net> wrote: > From: Anatoly Pugachev <matorola@gmail.com> > Date: Tue, 15 Aug 2017 21:50:45 +0300 > >> Together with Dmitry (ldv) , we've discovered that running test suite >> from strace produces kernel OOPS, when kernel is compiled with gcc 7.1 >> or with gcc 7.2 , but not with gcc 6 : > > Please try this patch: Dave, this patch fixes OOPS, thanks. Tested on ldom (gcc 7.2, git kernel + patch, git strace). Going to check with sun sparc v215 (sun4u), but it would take some time to compile patched kernel... -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Aug 16, 2017 at 11:42 AM, Anatoly Pugachev <matorola@gmail.com> wrote: > On Wed, Aug 16, 2017 at 7:30 AM, David Miller <davem@davemloft.net> wrote: >> From: Anatoly Pugachev <matorola@gmail.com> >> Date: Tue, 15 Aug 2017 21:50:45 +0300 >> >>> Together with Dmitry (ldv) , we've discovered that running test suite >>> from strace produces kernel OOPS, when kernel is compiled with gcc 7.1 >>> or with gcc 7.2 , but not with gcc 6 : >> >> Please try this patch: > > Dave, > > this patch fixes OOPS, thanks. Tested on ldom (gcc 7.2, git kernel + > patch, git strace). > Going to check with sun sparc v215 (sun4u), but it would take some > time to compile patched kernel... strace test suite run on v215 (sun4u), git kernel + patch (4.13.0-rc5-00067-g510c8a899caf-dirty), debian sid gcc-7.1, git strace passed without kernel OOPS. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
From: Anatoly Pugachev <matorola@gmail.com> Date: Wed, 16 Aug 2017 11:42:43 +0300 > On Wed, Aug 16, 2017 at 7:30 AM, David Miller <davem@davemloft.net> wrote: >> From: Anatoly Pugachev <matorola@gmail.com> >> Date: Tue, 15 Aug 2017 21:50:45 +0300 >> >>> Together with Dmitry (ldv) , we've discovered that running test suite >>> from strace produces kernel OOPS, when kernel is compiled with gcc 7.1 >>> or with gcc 7.2 , but not with gcc 6 : >> >> Please try this patch: > > Dave, > > this patch fixes OOPS, thanks. Tested on ldom (gcc 7.2, git kernel + > patch, git strace). Thanks for testing. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/sparc/lib/multi3.S b/arch/sparc/lib/multi3.S index d6b6c97..703127a 100644 --- a/arch/sparc/lib/multi3.S +++ b/arch/sparc/lib/multi3.S @@ -5,26 +5,26 @@ .align 4 ENTRY(__multi3) /* %o0 = u, %o1 = v */ mov %o1, %g1 - srl %o3, 0, %g4 - mulx %g4, %g1, %o1 + srl %o3, 0, %o4 + mulx %o4, %g1, %o1 srlx %g1, 0x20, %g3 - mulx %g3, %g4, %g5 - sllx %g5, 0x20, %o5 - srl %g1, 0, %g4 + mulx %g3, %o4, %g7 + sllx %g7, 0x20, %o5 + srl %g1, 0, %o4 sub %o1, %o5, %o5 srlx %o5, 0x20, %o5 - addcc %g5, %o5, %g5 + addcc %g7, %o5, %g7 srlx %o3, 0x20, %o5 - mulx %g4, %o5, %g4 + mulx %o4, %o5, %o4 mulx %g3, %o5, %o5 sethi %hi(0x80000000), %g3 - addcc %g5, %g4, %g5 - srlx %g5, 0x20, %g5 + addcc %g7, %o4, %g7 + srlx %g7, 0x20, %g7 add %g3, %g3, %g3 movcc %xcc, %g0, %g3 - addcc %o5, %g5, %o5 - sllx %g4, 0x20, %g4 - add %o1, %g4, %o1 + addcc %o5, %g7, %o5 + sllx %o4, 0x20, %o4 + add %o1, %o4, %o1 add %o5, %g3, %g2 mulx %g1, %o2, %g1 add %g1, %g2, %g1