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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::431; envelope-from=npiggin@gmail.com; helo=mail-pf1-x431.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1684142935862100005 Content-Type: text/plain; charset="utf-8" A store to MMCR0 with PMCjCE=3D1 fails to update hflags correctly and results in hflags mismatch: qemu: fatal: TCG hflags mismatch (current:0x2408003d rebuilt:0x240a003d) This can be reproduced by running perf on a recent machine. Signed-off-by: Nicholas Piggin Reviewed-by: Daniel Henrique Barboza --- Since v2: new patch. target/ppc/power8-pmu.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/target/ppc/power8-pmu.c b/target/ppc/power8-pmu.c index 64a64865d7..29e0012ed6 100644 --- a/target/ppc/power8-pmu.c +++ b/target/ppc/power8-pmu.c @@ -236,14 +236,16 @@ void helper_store_mmcr0(CPUPPCState *env, target_ulon= g value) { bool hflags_pmcc0 =3D (value & MMCR0_PMCC0) !=3D 0; bool hflags_pmcc1 =3D (value & MMCR0_PMCC1) !=3D 0; + bool hflags_pmcjce =3D (value & MMCR0_PMCjCE) !=3D 0; =20 pmu_update_cycles(env); =20 env->spr[SPR_POWER_MMCR0] =3D value; =20 - /* MMCR0 writes can change HFLAGS_PMCC[01] and HFLAGS_INSN_CNT */ + /* MMCR0 writes can change HFLAGS_PMCC[01], PMCjCE, and HFLAGS_INSN_CN= T */ env->hflags =3D deposit32(env->hflags, HFLAGS_PMCC0, 1, hflags_pmcc0); env->hflags =3D deposit32(env->hflags, HFLAGS_PMCC1, 1, hflags_pmcc1); + env->hflags =3D deposit32(env->hflags, HFLAGS_PMCJCE, 1, hflags_pmcjce= ); =20 pmu_update_summaries(env); =20 --=20 2.40.1