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| author | Olof Johansson <olof@lixom.net> | 2006-08-06 20:51:25 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-08-18 09:25:51 -0700 |
| commit | 35a472de81cfdb37f3cfb49fde4987d99b81f996 (patch) | |
| tree | c085909700afcbf1751dc80d4580fe8c015398ee | |
| parent | d246e8b2f241c3b4670dc9779c7494606676210a (diff) | |
| download | lwn-35a472de81cfdb37f3cfb49fde4987d99b81f996.tar.gz lwn-35a472de81cfdb37f3cfb49fde4987d99b81f996.zip | |
[PATCH] powerpc: Clear HID0 attention enable on PPC970 at boot time (CVE-2006-4093)
Clear HID0[en_attn] at CPU init time on PPC970. Closes CVE-2006-4093.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_power4.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/cpu_setup_power4.S b/arch/powerpc/kernel/cpu_setup_power4.S index b61d86e7ceb6..55f367eddb69 100644 --- a/arch/powerpc/kernel/cpu_setup_power4.S +++ b/arch/powerpc/kernel/cpu_setup_power4.S @@ -94,6 +94,8 @@ _GLOBAL(__setup_cpu_ppc970) mfspr r0,SPRN_HID0 li r11,5 /* clear DOZE and SLEEP */ rldimi r0,r11,52,8 /* set NAP and DPM */ + li r11,0 + rldimi r0,r11,32,31 /* clear EN_ATTN */ mtspr SPRN_HID0,r0 mfspr r0,SPRN_HID0 mfspr r0,SPRN_HID0 |