5.4-stable review patch. If anyone has any objections, please let me know.
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From: Helge Deller deller@gmx.de
commit 9542130937e9dc707dd7c6b7af73326437da2d50 upstream.
For an itlb miss when executing code above 4 Gb on ILP64 adjust the iasq/iaoq in the same way isr/ior was adjusted. This fixes signal delivery for the 64-bit static test program from http://ftp.parisc-linux.org/src/64bit.tar.gz. Note that signals are handled by the signal trampoline code in the 64-bit VDSO which is mapped into high userspace memory region above 4GB for 64-bit processes.
Signed-off-by: Helge Deller deller@gmx.de Cc: stable@vger.kernel.org # v4.19+ Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/parisc/kernel/entry.S | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
--- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -1078,8 +1078,7 @@ ENTRY_CFI(intr_save) /* for os_hpmc */ STREG %r16, PT_ISR(%r29) STREG %r17, PT_IOR(%r29)
-#if 0 && defined(CONFIG_64BIT) - /* Revisit when we have 64-bit code above 4Gb */ +#if defined(CONFIG_64BIT) b,n intr_save2
skip_save_ior: @@ -1087,8 +1086,7 @@ skip_save_ior: * need to adjust iasq/iaoq here in the same way we adjusted isr/ior * above. */ - extrd,u,* %r8,PSW_W_BIT,1,%r1 - cmpib,COND(=),n 1,%r1,intr_save2 + bb,COND(>=),n %r8,PSW_W_BIT,intr_save2 LDREG PT_IASQ0(%r29), %r16 LDREG PT_IAOQ0(%r29), %r17 /* adjust iasq/iaoq */