OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

target/arm: Fill in VL for tbflags when SME enabled and SVE disabled

Browse Source 
When PSTATE.SM, VL = SVL even if SVE is disabled.
This is visible in kselftest ssve-test.

Reported-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220713045848.217364-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-07-13 10:28:47 +05:30 committed by Peter Maydell
parent 9d5a9ae962
commit 6215113355
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
target/arm/helper.c
View File

@ -10882,13 +10882,19 @@ static CPUARMTBFlags rebuild_hflags_a64(CPUARMState *env, int el, int fp_el,
}
if (cpu_isar_feature(aa64_sme, env_archcpu(env))) {
int sme_el = sme_exception_el(env, el);
bool sm = FIELD_EX64(env->svcr, SVCR, SM);
DP_TBFLAG_A64(flags, SMEEXC_EL, sme_el);
if (sme_el == 0) {
/* Similarly, do not compute SVL if SME is disabled. */
DP_TBFLAG_A64(flags, SVL, sve_vqm1_for_el_sm(env, el, true));
int svl = sve_vqm1_for_el_sm(env, el, true);
DP_TBFLAG_A64(flags, SVL, svl);
if (sm) {
/* If SVE is disabled, we will not have set VL above. */
DP_TBFLAG_A64(flags, VL, svl);
}
}
if (FIELD_EX64(env->svcr, SVCR, SM)) {
if (sm) {
DP_TBFLAG_A64(flags, PSTATE_SM, 1);
DP_TBFLAG_A64(flags, SME_TRAP_NONSTREAMING, !sme_fa64(env, el));
}