From 87613bb9d20c556b5eeae04f4caf40701189f07b Mon Sep 17 00:00:00 2001 From: Helge Deller <deller@gmx.de> Date: Thu, 25 Oct 2018 08:31:16 +0200 Subject: [PATCH] parisc: Use LINUX_GATEWAY_SPACE constant in entry.S Use and mention the predefined LINUX_GATEWAY_SPACE constant in the various important code sections which deal with the gateway page. Signed-off-by: Helge Deller <deller@gmx.de> --- arch/parisc/kernel/entry.S | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index 1c60408a64ad3..d5eb19efa65be 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -394,6 +394,7 @@ */ .macro space_check spc,tmp,fault mfsp %sr7,\tmp + /* check against %r0 which is same value as LINUX_GATEWAY_SPACE */ or,COND(<>) %r0,\spc,%r0 /* user may execute gateway page * as kernel, so defeat the space * check if it is */ @@ -910,9 +911,9 @@ intr_check_sig: * Only do signals if we are returning to user space */ LDREG PT_IASQ0(%r16), %r20 - cmpib,COND(=),n 0,%r20,intr_restore /* backward */ + cmpib,COND(=),n LINUX_GATEWAY_SPACE, %r20, intr_restore /* backward */ LDREG PT_IASQ1(%r16), %r20 - cmpib,COND(=),n 0,%r20,intr_restore /* backward */ + cmpib,COND(=),n LINUX_GATEWAY_SPACE, %r20, intr_restore /* backward */ /* NOTE: We need to enable interrupts if we have to deliver * signals. We used to do this earlier but it caused kernel -- GitLab