CSR: use the guest-visible interrupt cause for VS-mode vectored dispatch - #3821
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PorterLu wants to merge 1 commit into
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CSR: use the guest-visible interrupt cause for VS-mode vectored dispatch#3821PorterLu wants to merge 1 commit into
PorterLu wants to merge 1 commit into
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vscause records the guest-visible cause code (SSI=1, STI=5, SEI=9), but the vector offset was derived from the HS-view code (VSSI=2, VSTI=6, VSEI=10). A guest in vectored mode therefore entered handler entry N+1 while vscause read N, with nothing to indicate the misdispatch.
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vscause records the guest-visible cause code (SSI=1, STI=5, SEI=9), but the vector offset was derived from the HS-view code (VSSI=2, VSTI=6, VSEI=10). A guest in vectored mode therefore entered handler entry N+1 while vscause read N, with nothing to indicate the misdispatch.
Related issue: none
Type of change: bug report
Impact: functional fix
Development Phase: implementation