SYS-OSS/FRET-qemu
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

accel/tcg: also suppress asynchronous IRQs for cpu_io_recompile

Browse Source 
While it would be technically correct to allow an IRQ to happen (as
the offending instruction never really completed) it messes up
instrumentation. We already take care to only use memory
instrumentation on the block, we should also suppress IRQs.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Julian Ganz <neither@nut.email>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-23-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2025-01-16 16:02:51 +00:00
parent db7a06ade1
commit 27f347e6a1
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
accel/tcg/translate-all.c
View File

@ -633,9 +633,10 @@ void cpu_io_recompile(CPUState *cpu, uintptr_t retaddr)
* Exit the loop and potentially generate a new TB executing the
* just the I/O insns. We also limit instrumentation to memory
* operations only (which execute after completion) so we don't
* double instrument the instruction.
* double instrument the instruction. Also don't let an IRQ sneak
* in before we execute it.
*/
cpu->cflags_next_tb = curr_cflags(cpu) | CF_MEMI_ONLY | n;
cpu->cflags_next_tb = curr_cflags(cpu) | CF_MEMI_ONLY | CF_NOIRQ | n;
if (qemu_loglevel_mask(CPU_LOG_EXEC)) {
vaddr pc = cpu->cc->get_pc(cpu);