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Fri, 05 Jul 2024 11:23:17 -0700 (PDT) From: Andrew Cooper To: Xen-devel Cc: Andrew Cooper , Shawn Anastasio , Oleksii Kurochko , Jan Beulich , Stefano Stabellini , Julien Grall Subject: [PATCH 1/2] xen/shutdown: Fix build issue with shutdown.h on PPC Date: Fri, 5 Jul 2024 19:23:10 +0100 Message-Id: <20240705182311.1968790-2-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240705182311.1968790-1-andrew.cooper3@citrix.com> References: <20240705182311.1968790-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1720203829093100001 Content-Type: text/plain; charset="utf-8" The use of bool needs xen/types.h, which shutdown.h picks up by chance in a= ll other architectures. While fixing this, swap u8 for unsigned char in hwdom_shutdown(), and move opt_noreboot into __ro_after_init. Signed-off-by: Andrew Cooper Reviewed-by: Jan Beulich --- CC: Shawn Anastasio CC: Oleksii Kurochko CC: Jan Beulich CC: Stefano Stabellini CC: Julien Grall --- xen/common/shutdown.c | 4 ++-- xen/include/xen/shutdown.h | 3 ++- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/xen/common/shutdown.c b/xen/common/shutdown.c index 5f8141edc6b2..cb9c830bbc1d 100644 --- a/xen/common/shutdown.c +++ b/xen/common/shutdown.c @@ -11,7 +11,7 @@ #include =20 /* opt_noreboot: If true, machine will need manual reset on error. */ -bool __read_mostly opt_noreboot; +bool __ro_after_init opt_noreboot; boolean_param("noreboot", opt_noreboot); =20 static void noreturn reboot_or_halt(void) @@ -29,7 +29,7 @@ static void noreturn reboot_or_halt(void) } } =20 -void hwdom_shutdown(u8 reason) +void hwdom_shutdown(unsigned char reason) { switch ( reason ) { diff --git a/xen/include/xen/shutdown.h b/xen/include/xen/shutdown.h index 668aed0be580..c7fa23aec1fe 100644 --- a/xen/include/xen/shutdown.h +++ b/xen/include/xen/shutdown.h @@ -2,11 +2,12 @@ #define __XEN_SHUTDOWN_H__ =20 #include +#include =20 /* opt_noreboot: If true, machine will need manual reset on error. */ extern bool opt_noreboot; 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charset="utf-8" OPAL has easy APIs for shutdown/reboot, so wire them up. Then, use machine_halt() rather than an infinite loop at the end of start_xen(). This avoids the Qemu smoke test needing to wait for the full timeout in order to succeed. (XEN) 8e011600000000c0 is the result of PTE map Enabled radix in LPCR Flushed TLB Hello, ppc64le! [ 6.341897656,5] OPAL: Shutdown request type 0x0... Signed-off-by: Andrew Cooper Reviewed-by: Shawn Anastasio --- CC: Shawn Anastasio CC: Oleksii Kurochko CC: Jan Beulich CC: Stefano Stabellini CC: Julien Grall I got bored testing fixes to the containers... --- xen/arch/ppc/Makefile | 1 + xen/arch/ppc/ppc64/opal-calls.S | 4 +++ xen/arch/ppc/setup.c | 8 +++--- xen/arch/ppc/shutdown.c | 43 +++++++++++++++++++++++++++++++++ xen/arch/ppc/stubs.c | 12 --------- 5 files changed, 51 insertions(+), 17 deletions(-) create mode 100644 xen/arch/ppc/shutdown.c diff --git a/xen/arch/ppc/Makefile b/xen/arch/ppc/Makefile index 71feb5e2c41f..655d212f6687 100644 --- a/xen/arch/ppc/Makefile +++ b/xen/arch/ppc/Makefile @@ -4,6 +4,7 @@ obj-$(CONFIG_EARLY_PRINTK) +=3D early_printk.init.o obj-y +=3D mm-radix.o obj-y +=3D opal.o obj-y +=3D setup.o +obj-y +=3D shutdown.o obj-y +=3D stubs.o obj-y +=3D tlb-radix.o =20 diff --git a/xen/arch/ppc/ppc64/opal-calls.S b/xen/arch/ppc/ppc64/opal-call= s.S index cc5de75c8af4..69d07909d108 100644 --- a/xen/arch/ppc/ppc64/opal-calls.S +++ b/xen/arch/ppc/ppc64/opal-calls.S @@ -79,3 +79,7 @@ opal_return_mmu: OPAL_CALL(opal_console_write, OPAL_CONSOLE_WRITE) OPAL_CALL(opal_console_flush, OPAL_CONSOLE_FLUSH) OPAL_CALL(opal_reinit_cpus, OPAL_REINIT_CPUS) + +OPAL_CALL(opal_cec_power_down, OPAL_CEC_POWER_DOWN) +OPAL_CALL(opal_cec_reboot, OPAL_CEC_REBOOT) +OPAL_CALL(opal_poll_events, OPAL_POLL_EVENTS) diff --git a/xen/arch/ppc/setup.c b/xen/arch/ppc/setup.c index 7fe06aa4bfb0..5fb5ab64e323 100644 --- a/xen/arch/ppc/setup.c +++ b/xen/arch/ppc/setup.c @@ -2,6 +2,8 @@ #include #include #include +#include + #include #include #include @@ -43,11 +45,7 @@ void __init noreturn start_xen(unsigned long r3, unsigne= d long r4, =20 early_printk("Hello, ppc64le!\n"); =20 - for ( ; ; ) - /* Set current hardware thread to very low priority */ - HMT_very_low(); - - unreachable(); + machine_halt(); } =20 void arch_get_xen_caps(xen_capabilities_info_t *info) diff --git a/xen/arch/ppc/shutdown.c b/xen/arch/ppc/shutdown.c new file mode 100644 index 000000000000..c4b00e57b13a --- /dev/null +++ b/xen/arch/ppc/shutdown.c @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#include + +#include + +int64_t opal_cec_power_down(uint64_t request); +int64_t opal_cec_reboot(void); +int64_t opal_poll_events(uint64_t *outstanding_event_mask); + +void machine_halt(void) +{ + int rc; + + do { + rc =3D opal_cec_power_down(0); + + if ( rc =3D=3D OPAL_BUSY_EVENT ) + opal_poll_events(NULL); + + } while ( rc =3D=3D OPAL_BUSY || rc =3D=3D OPAL_BUSY_EVENT ); + + for ( ;; ) + opal_poll_events(NULL); +} + +void machine_restart(unsigned int delay_millisecs) +{ + int rc; + + /* TODO: mdelay(delay_millisecs); */ + + do { + rc =3D opal_cec_reboot(); + + if ( rc =3D=3D OPAL_BUSY_EVENT ) + opal_poll_events(NULL); + + } while ( rc =3D=3D OPAL_BUSY || rc =3D=3D OPAL_BUSY_EVENT ); + + for ( ;; ) + opal_poll_events(NULL); +} + diff --git a/xen/arch/ppc/stubs.c b/xen/arch/ppc/stubs.c index 923f0e7b2095..41e7a7d2130b 100644 --- a/xen/arch/ppc/stubs.c +++ b/xen/arch/ppc/stubs.c @@ -59,18 +59,6 @@ void vcpu_show_execution_state(struct vcpu *v) BUG_ON("unimplemented"); } =20 -/* shutdown.c */ - -void machine_restart(unsigned int delay_millisecs) -{ - BUG_ON("unimplemented"); -} - -void machine_halt(void) -{ - BUG_ON("unimplemented"); -} - /* vm_event.c */ =20 void vm_event_fill_regs(vm_event_request_t *req) --=20 2.39.2