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[Bug 1867072] Re: ARM: tag bits cleared in FAR_EL1

From: Richard Henderson
Subject: [Bug 1867072] Re: ARM: tag bits cleared in FAR_EL1
Date: Sun, 15 Mar 2020 23:21:58 -0000

Fix now in master.

** Changed in: qemu
       Status: In Progress => Fix Committed

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  ARM: tag bits cleared in FAR_EL1

Status in QEMU:
  Fix Committed

Bug description:
  The ARM Architecture Reference Manual provides the following for

  "For a Data Abort or Watchpoint exception, if address tagging is
  enabled for the address accessed by the data access that caused the
  exception, then this field includes the tag."

  However, I have found that the tag bits in FAR_EL1 are always clear,
  even if the tag bits were set in the original access.

  I can reproduce the problem on both 4.1.1 and master

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