Public bug reported:
Hello,
In qemu-system-riscv64, following a QEMU update, I get all sort of weird
and not easily reproducible crashes in my risc-v guest.
I have bissected this issue to commit c7b951718815694284501ed01fec7acb8654db7b.
Some TLB flushes were removed in the following places:
target/riscv/cpu_helper.c: `csr_write_helper(env, s, CSR_MSTATUS);` ->
`env->mstatus = s;` (twice)
target/riscv/op_helper.c: `csr_write_helper(env, s, CSR_MSTATUS);` ->
`env->mstatus = s;` (twice)
Adding TLB flushes in all 4 places fixes the issues for me.
** Affects: qemu
Importance: Undecided
Status: New
** Tags: riscv
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https://bugs.launchpad.net/bugs/1832535
Title:
[riscv/regression] Missing tlb flush introduced in refactoring
Status in QEMU:
New
Bug description:
Hello,
In qemu-system-riscv64, following a QEMU update, I get all sort of
weird and not easily reproducible crashes in my risc-v guest.
I have bissected this issue to commit
c7b951718815694284501ed01fec7acb8654db7b.
Some TLB flushes were removed in the following places:
target/riscv/cpu_helper.c: `csr_write_helper(env, s, CSR_MSTATUS);` ->
`env->mstatus = s;` (twice)
target/riscv/op_helper.c: `csr_write_helper(env, s, CSR_MSTATUS);` ->
`env->mstatus = s;` (twice)
Adding TLB flushes in all 4 places fixes the issues for me.
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