Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 20:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

parisc: Flush ITLB in flush_tlb_all_local() only on split TLB machines

Browse Source 
flush_tlb_all_local() flushes the ITLB and DTLB of the CPU.
In case the machine does not have separate ITLBs and DTLBs, use the
alternative functionality to replace the code which flushes the ITLB
with nops while keeping the code which flushes the DTLB.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller 2019-07-21 00:55:48 +02:00
parent f5e03d3a04
commit 69245c9756
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/parisc/kernel/pacache.S
View File

@ -63,7 +63,7 @@ ENTRY_CFI(flush_tlb_all_local)
/* Flush Instruction Tlb */
LDREG ITLB_SID_BASE(%r1), %r20
88: LDREG ITLB_SID_BASE(%r1), %r20
LDREG ITLB_SID_STRIDE(%r1), %r21
LDREG ITLB_SID_COUNT(%r1), %r22
LDREG ITLB_OFF_BASE(%r1), %arg0
@ -103,6 +103,7 @@ fitonemiddle: /* Loop if LOOP = 1 */
add %r21, %r20, %r20 /* increment space */
fitdone:
ALTERNATIVE(88b, fitdone, ALT_COND_NO_SPLIT_TLB, INSN_NOP)
/* Flush Data Tlb */