diff options
| author | Helge Deller <deller@gmx.de> | 2024-09-03 17:22:10 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2024-09-03 22:08:22 +0200 |
| commit | ead5078cf1a5f11d16e3e8462154c859620bcc7e (patch) | |
| tree | f76b81850e7b2b2b207697ee91ca74e5cab1a492 /event-loop-base.c | |
| parent | fd1952d814da738ed107e05583b3e02ac11e88ff (diff) | |
target/hppa: Fix PSW V-bit packaging in cpu_hppa_get for hppa64
While adding hppa64 support, the psw_v variable got extended from 32 to 64
bits. So, when packaging the PSW-V bit from the psw_v variable for interrupt
processing, check bit 31 instead the 63th (sign) bit.
This fixes a hard to find Linux kernel boot issue where the loss of the PSW-V
bit due to an ITLB interruption in the middle of a series of ds/addc
instructions (from the divU milicode library) generated the wrong division
result and thus triggered a Linux kernel crash.
Link: https://lore.kernel.org/lkml/718b8afe-222f-4b3a-96d3-93af0e4ceff1@roeck-us.net/
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 931adff31478 ("target/hppa: Update cpu_hppa_get/put_psw for hppa64")
Cc: qemu-stable@nongnu.org # v8.2+
Diffstat (limited to 'event-loop-base.c')
0 files changed, 0 insertions, 0 deletions