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| author | Vineet Gupta <vgupta@synopsys.com> | 2013-05-25 14:04:25 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-05-25 14:15:55 +0530 |
| commit | 7bb66f6e6eecdd8e10ed3a63bd28c1e9105adc79 (patch) | |
| tree | 091ca0ef40c1f116b9b2da09148cb1f09158be2f /security | |
| parent | 006dfb3c9c44192f06093d65b3a876fa5ad1319a (diff) | |
| download | linux-stable-7bb66f6e6eecdd8e10ed3a63bd28c1e9105adc79.tar.gz linux-stable-7bb66f6e6eecdd8e10ed3a63bd28c1e9105adc79.tar.bz2 linux-stable-7bb66f6e6eecdd8e10ed3a63bd28c1e9105adc79.zip | |
ARC: lazy dcache flush broke gdb in non-aliasing configs
gdbserver inserting a breakpoint ends up calling copy_user_page() for a
code page. The generic version of which (non-aliasing config) didn't set
the PG_arch_1 bit hence update_mmu_cache() didn't sync dcache/icache for
corresponding dynamic loader code page - causing garbade to be executed.
So now aliasing versions of copy_user_highpage()/clear_page() are made
default. There is no significant overhead since all of special alias
handling code is compiled out for non-aliasing build
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions