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[Qemu-devel] [Bug 1090558] Re: hw/mc146818: error reading RTC_HOURS_ALAR
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [Bug 1090558] Re: hw/mc146818: error reading RTC_HOURS_ALARM |
Date: |
Fri, 11 Jan 2013 16:28:43 -0000 |
The problem is obviously there, but I tried pretty hard to make it fail
and couldn't so it seems latent. If you can, please provide a patch to
tests/rtc-test.c that shows the bug.
** Changed in: qemu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1090558
Title:
hw/mc146818: error reading RTC_HOURS_ALARM
Status in QEMU:
Incomplete
Bug description:
get_next_alarm() doesn't read the RTC_HOURS_ALARM field correctly.
- Bit 7 must be masked before conversion from BCD.
- Care must be taken to check the don't care condition before masking.
- The PM bit must be read from RTC_HOURS_ALARM, not from RTC_HOURS (as is
done in convert_hour()).
Seen in commit e376a788ae130454ad5e797f60cb70d0308babb6.
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