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| author | Helge Deller <deller@gmx.de> | 2024-09-10 18:32:24 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2024-09-16 22:58:55 +0200 |
| commit | 9542130937e9dc707dd7c6b7af73326437da2d50 (patch) | |
| tree | 9daa961d9f7e28805916084af719cf5c5962a68c | |
| parent | d24449864da5838936669618356b0e30ca2999c3 (diff) | |
| download | linux-9542130937e9dc707dd7c6b7af73326437da2d50.tar.gz linux-9542130937e9dc707dd7c6b7af73326437da2d50.tar.bz2 linux-9542130937e9dc707dd7c6b7af73326437da2d50.zip | |
parisc: Fix itlb miss handler for 64-bit programs
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+
| -rw-r--r-- | arch/parisc/kernel/entry.S | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index ab23e61a6f01..ea57bcc21dc5 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -1051,8 +1051,7 @@ 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: @@ -1060,8 +1059,7 @@ 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 */ |