From: Richard Henderson <richard.henderson@linaro.org> To: LIU Zhiwei <zhiwei_liu@c-sky.com>, qemu-devel@nongnu.org, qemu-riscv@nongnu.org, Alexey Baturo <baturo.alexey@gmail.com> Cc: Alistair.Francis@wdc.com, bin.meng@windriver.com, palmer@dabbelt.com Subject: Re: [PATCH 09/13] target/riscv: Adjust vector address with ol Date: Tue, 9 Nov 2021 10:25:50 +0100 [thread overview] Message-ID: <ace70393-0a40-93c1-f30b-e45b0ba856ca@linaro.org> (raw) In-Reply-To: <47b0a429-52ac-4d5e-ce0b-cea67b44c550@c-sky.com> On 11/9/21 10:05 AM, LIU Zhiwei wrote: >> Do you mean we should add this code to riscv_tr_init_disas_context >> >> if (ctx->pm_enabled) { >> switch (priv) { >> case PRV_M: >> env->mask = env->mpmmask; >> env->base = env->mpmbase; >> break; >> case PRV_S: >> env->mask = env->spmmask; >> env->base = env->spmbase; >> break; >> case PRV_U: >> env->mask = env->upmmask; >> env->base = env->upmbase; >> break; >> default: >> g_assert_not_reached(); >> } >> ctx->pm_mask = pm_mask[priv]; >> ctx->pm_base = pm_base[priv]; >> ctx->need_mask = true; /* new flag for mask */ >> } else if (get_xlen(ctx) < TARGET_LONG_BITS) { >> env->mask = UINT32_MAX; >> env->base = 0; Certainly we cannot modify env in riscv_tr_init_disas_context. >> ctx->pm_mask = tcg_constant_tl(UINT32_MAX); >> ctx->pm_base = tcg_constant_tl(0); >> ctx->need_mask = true; >> } else { >> env->mask = UINT64_MAX; >> env->base = 0; >> } > > I think the code is wrong, perhaps we should modify the write_mpmmask > env->mask = env->mpmmask = value; Something like that, yes. However, env->mask must be set based on env->priv, etc; you can't just assign the same as mpmmask. Then you also need to update env->mask in a hook like you created in patch 11 to switch context (though I would call it from helper_mret and helper_sret directly, and not create a new call from tcg). Then you need to call the hook as well on exception entry, reset, and vmstate_riscv_cpu.post_load. r~
WARNING: multiple messages have this Message-ID (diff)
From: Richard Henderson <richard.henderson@linaro.org> To: LIU Zhiwei <zhiwei_liu@c-sky.com>, qemu-devel@nongnu.org, qemu-riscv@nongnu.org, Alexey Baturo <baturo.alexey@gmail.com> Cc: palmer@dabbelt.com, bin.meng@windriver.com, Alistair.Francis@wdc.com Subject: Re: [PATCH 09/13] target/riscv: Adjust vector address with ol Date: Tue, 9 Nov 2021 10:25:50 +0100 [thread overview] Message-ID: <ace70393-0a40-93c1-f30b-e45b0ba856ca@linaro.org> (raw) In-Reply-To: <47b0a429-52ac-4d5e-ce0b-cea67b44c550@c-sky.com> On 11/9/21 10:05 AM, LIU Zhiwei wrote: >> Do you mean we should add this code to riscv_tr_init_disas_context >> >> if (ctx->pm_enabled) { >> switch (priv) { >> case PRV_M: >> env->mask = env->mpmmask; >> env->base = env->mpmbase; >> break; >> case PRV_S: >> env->mask = env->spmmask; >> env->base = env->spmbase; >> break; >> case PRV_U: >> env->mask = env->upmmask; >> env->base = env->upmbase; >> break; >> default: >> g_assert_not_reached(); >> } >> ctx->pm_mask = pm_mask[priv]; >> ctx->pm_base = pm_base[priv]; >> ctx->need_mask = true; /* new flag for mask */ >> } else if (get_xlen(ctx) < TARGET_LONG_BITS) { >> env->mask = UINT32_MAX; >> env->base = 0; Certainly we cannot modify env in riscv_tr_init_disas_context. >> ctx->pm_mask = tcg_constant_tl(UINT32_MAX); >> ctx->pm_base = tcg_constant_tl(0); >> ctx->need_mask = true; >> } else { >> env->mask = UINT64_MAX; >> env->base = 0; >> } > > I think the code is wrong, perhaps we should modify the write_mpmmask > env->mask = env->mpmmask = value; Something like that, yes. However, env->mask must be set based on env->priv, etc; you can't just assign the same as mpmmask. Then you also need to update env->mask in a hook like you created in patch 11 to switch context (though I would call it from helper_mret and helper_sret directly, and not create a new call from tcg). Then you need to call the hook as well on exception entry, reset, and vmstate_riscv_cpu.post_load. r~
next prev parent reply other threads:[~2021-11-09 9:26 UTC|newest] Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-01 10:01 [PATCH 00/13] Support UXL filed in xstatus LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:01 ` [PATCH 01/13] target/riscv: Sign extend pc for different ol LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:29 ` Richard Henderson 2021-11-01 10:29 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 02/13] target/riscv: Extend pc for runtime pc write LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:33 ` Richard Henderson 2021-11-01 10:33 ` Richard Henderson 2021-11-02 1:48 ` LIU Zhiwei 2021-11-02 1:48 ` LIU Zhiwei 2021-11-02 10:18 ` Richard Henderson 2021-11-02 10:18 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 03/13] target/riscv: Ignore the pc bits above XLEN LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:35 ` Richard Henderson 2021-11-01 10:35 ` Richard Henderson 2021-11-02 10:20 ` Richard Henderson 2021-11-02 10:20 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 04/13] target/riscv: Use gdb xml according to max mxlen LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:40 ` Richard Henderson 2021-11-01 10:40 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 05/13] target/riscv: Calculate address according to ol LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:46 ` Richard Henderson 2021-11-01 10:46 ` Richard Henderson 2021-11-01 15:56 ` LIU Zhiwei 2021-11-01 15:56 ` LIU Zhiwei 2021-11-01 10:01 ` [PATCH 06/13] target/riscv: Adjust vsetvl " LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:53 ` Richard Henderson 2021-11-01 10:53 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 07/13] target/riscv: Ajdust vector atomic check with ol LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 10:55 ` Richard Henderson 2021-11-01 10:55 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 08/13] target/riscv: Fix check range for first fault only LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 13:41 ` Richard Henderson 2021-11-01 13:41 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 09/13] target/riscv: Adjust vector address with ol LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 11:35 ` Richard Henderson 2021-11-01 11:35 ` Richard Henderson 2021-11-08 9:28 ` LIU Zhiwei 2021-11-08 9:28 ` LIU Zhiwei 2021-11-09 6:37 ` Richard Henderson 2021-11-09 6:37 ` Richard Henderson 2021-11-09 8:04 ` LIU Zhiwei 2021-11-09 8:04 ` LIU Zhiwei 2021-11-09 8:18 ` Richard Henderson 2021-11-09 8:18 ` Richard Henderson 2021-11-09 8:39 ` LIU Zhiwei 2021-11-09 8:39 ` LIU Zhiwei 2021-11-09 9:05 ` LIU Zhiwei 2021-11-09 9:05 ` LIU Zhiwei 2021-11-09 9:25 ` Richard Henderson [this message] 2021-11-09 9:25 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 10/13] target/riscv: Adjust scalar reg in vector " LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 16:33 ` Richard Henderson 2021-11-01 16:33 ` Richard Henderson 2021-11-08 9:38 ` LIU Zhiwei 2021-11-08 9:38 ` LIU Zhiwei 2021-11-01 10:01 ` [PATCH 11/13] target/riscv: Switch context in exception return LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 16:43 ` Richard Henderson 2021-11-01 16:43 ` Richard Henderson 2021-11-08 11:23 ` LIU Zhiwei 2021-11-08 11:23 ` LIU Zhiwei 2021-11-09 6:38 ` LIU Zhiwei 2021-11-09 6:38 ` LIU Zhiwei 2021-11-09 6:51 ` LIU Zhiwei 2021-11-09 6:51 ` LIU Zhiwei 2021-11-01 10:01 ` [PATCH 12/13] target/riscv: Don't save pc when " LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 16:49 ` Richard Henderson 2021-11-01 16:49 ` Richard Henderson 2021-11-01 10:01 ` [PATCH 13/13] target/riscv: Enable uxl field write LIU Zhiwei 2021-11-01 10:01 ` LIU Zhiwei 2021-11-01 17:01 ` Richard Henderson 2021-11-01 17:01 ` Richard Henderson 2021-11-08 12:10 ` LIU Zhiwei 2021-11-08 12:10 ` LIU Zhiwei 2021-11-10 3:01 ` LIU Zhiwei 2021-11-10 3:01 ` LIU Zhiwei
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=ace70393-0a40-93c1-f30b-e45b0ba856ca@linaro.org \ --to=richard.henderson@linaro.org \ --cc=Alistair.Francis@wdc.com \ --cc=baturo.alexey@gmail.com \ --cc=bin.meng@windriver.com \ --cc=palmer@dabbelt.com \ --cc=qemu-devel@nongnu.org \ --cc=qemu-riscv@nongnu.org \ --cc=zhiwei_liu@c-sky.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.