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authorHelge Deller <deller@gmx.de>2018-10-25 08:31:16 +0200
committerHelge Deller <deller@gmx.de>2018-10-26 08:20:58 +0200
commit87613bb9d20c556b5eeae04f4caf40701189f07b (patch)
treebe29e6651ce3b2053213544b4df9e4ae44b0fdfb /arch/parisc/kernel/entry.S
parentparisc64: change __kernel_suseconds_t to match glibc (diff)
downloadlinux-dev-87613bb9d20c556b5eeae04f4caf40701189f07b.tar.xz
linux-dev-87613bb9d20c556b5eeae04f4caf40701189f07b.zip
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>
Diffstat (limited to '')
-rw-r--r--arch/parisc/kernel/entry.S5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 1c60408a64ad..d5eb19efa65b 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