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Re: [PATCH 15/16] target/mips/cpu: Do not allow system-mode use without
From: |
Igor Mammedov |
Subject: |
Re: [PATCH 15/16] target/mips/cpu: Do not allow system-mode use without input clock |
Date: |
Tue, 29 Sep 2020 15:01:54 +0200 |
On Mon, 28 Sep 2020 19:15:38 +0200
Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> Now than all QOM users provides the input clock, do not allow
> using a CPU core without its input clock connected on system-mode
> emulation. For user-mode, keep providing a fixed 200 MHz clock,
> as it used by the RDHWR instruction (see commit cdfcad788394).
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
> Cc: Igor Mammedov <imammedo@redhat.com>
>
> We need the qtest check for tests/qtest/machine-none-test.c
> which instanciate a CPU with the none machine. Igor, is it
> better to remove the MIPS targets from the test cpus_map[]?
I don't get idea, could you rephrase/elaborate?
> ---
> target/mips/cpu.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/target/mips/cpu.c b/target/mips/cpu.c
> index 2f75216c324..cc4ee75af30 100644
> --- a/target/mips/cpu.c
> +++ b/target/mips/cpu.c
> @@ -25,6 +25,7 @@
> #include "kvm_mips.h"
> #include "qemu/module.h"
> #include "sysemu/kvm.h"
> +#include "sysemu/qtest.h"
> #include "exec/exec-all.h"
> #include "hw/qdev-clock.h"
> #include "hw/qdev-properties.h"
> @@ -159,11 +160,18 @@ static void mips_cpu_realizefn(DeviceState *dev, Error
> **errp)
> Error *local_err = NULL;
>
> if (!clock_get(cs->clock)) {
> +#ifdef CONFIG_USER_ONLY
> /*
> * Initialize the frequency to 200MHz in case
> * the clock remains unconnected.
> */
> clock_set_hz(cs->clock, 200000000);
> +#else
> + if (!qtest_enabled()) {
> + error_setg(errp, "CPU clock must be connected to a clock
> source");
> + return;
> + }
> +#endif
> }
> mips_cpu_clk_update(cs);
>
- [PATCH 03/16] target/mips/cp0_timer: Explicit unit in variable name, (continued)
- [PATCH 03/16] target/mips/cp0_timer: Explicit unit in variable name, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 08/16] hw/mips/fuloong2e: Set CPU frequency to 533 MHz, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 06/16] target/mips: Keep CP0 counter in sync with the CPU frequency, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 07/16] hw/mips/r4k: Explicit CPU frequency is 200 MHz, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 12/16] hw/mips/boston: Set CPU frequency to 1 GHz, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 13/16] hw/mips/malta: Set CPU frequency to 320 MHz, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 10/16] hw/mips/jazz: Correct CPU frequencies, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 11/16] hw/mips/cps: Expose input clock and connect it to CPU cores, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 14/16] hw/mips/cps: Do not allow use without input clock, Philippe Mathieu-Daudé, 2020/09/28
- [PATCH 15/16] target/mips/cpu: Do not allow system-mode use without input clock, Philippe Mathieu-Daudé, 2020/09/28
- Re: [PATCH 15/16] target/mips/cpu: Do not allow system-mode use without input clock,
Igor Mammedov <=
- [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Philippe Mathieu-Daudé, 2020/09/28
- Re: [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Willian Rampazzo, 2020/09/28
- Re: [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Philippe Mathieu-Daudé, 2020/09/29
- Re: [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Alex Bennée, 2020/09/29
- Re: [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Philippe Mathieu-Daudé, 2020/09/29
- Re: [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Daniel P . Berrangé, 2020/09/30
- Re: [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Alex Bennée, 2020/09/30
- Re: [PATCH 16/16] tests/acceptance: Test the MIPSsim machine, Philippe Mathieu-Daudé, 2020/09/30
Re: [PATCH 00/16] hw/mips: Set CPU frequency, no-reply, 2020/09/28