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From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	mikey@neuling.org, hbabu@us.ibm.com, nicholas.piggin@gmail.com,
	linuxppc-dev@ozlabs.org, <linux-kernel@vger.kernel.org>
Subject: [PATCH v3 12/18] powerpc: have copy depend on CONFIG_BOOK3S_64
Date: Tue,  7 Nov 2017 18:23:52 -0800	[thread overview]
Message-ID: <1510107838-15181-13-git-send-email-sukadev@linux.vnet.ibm.com> (raw)
In-Reply-To: <1510107838-15181-1-git-send-email-sukadev@linux.vnet.ibm.com>

Have the COPY/PASTE instructions depend on CONFIG_BOOK3S_64 rather than
CONFIG_PPC_STD_MMU_64.

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
 arch/powerpc/kernel/process.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index a0c74bb..37ed60b 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1215,10 +1215,14 @@ struct task_struct *__switch_to(struct task_struct *prev,
 		batch = this_cpu_ptr(&ppc64_tlb_batch);
 		batch->active = 1;
 	}
+#endif /* CONFIG_PPC_STD_MMU_64 */
 
 	if (current_thread_info()->task->thread.regs) {
+#ifdef CONFIG_PPC_STD_MMU_64
 		restore_math(current_thread_info()->task->thread.regs);
+#endif /* CONFIG_PPC_STD_MMU_64 */
 
+#ifdef CONFIG_PPC_BOOK3S_64
 		/*
 		 * The copy-paste buffer can only store into foreign real
 		 * addresses, so unprivileged processes can not see the
@@ -1237,8 +1241,8 @@ struct task_struct *__switch_to(struct task_struct *prev,
 			asm volatile(PPC_COPY(%0, %1)
 					: : "r"(dummy_copy_buffer), "r"(0));
 		}
+#endif /* CONFIG_PPC_BOOK3S_64 */
 	}
-#endif /* CONFIG_PPC_STD_MMU_64 */
 
 	return last;
 }
-- 
2.7.4

  parent reply	other threads:[~2017-11-08  2:26 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-08  2:23 [PATCH v3 00/18] powerpc/vas: Add support for FTW Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 01/18] powerpc/vas: init missing fields from [rt]xattr Sukadev Bhattiprolu
2017-11-14 11:12   ` [v3,01/18] " Michael Ellerman
2017-11-08  2:23 ` [PATCH v3 02/18] powerpc/vas: Validate window credits Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 03/18] powerpc/vas: Cleanup some debug code Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 04/18] powerpc/vas: Drop poll_window_cast_out() Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 05/18] powerpc/vas: Use helper to unpin/close window Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 06/18] powerpc/vas: Reduce polling interval for busy state Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 07/18] powerpc/vas: Save configured window credits Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 08/18] powerpc/vas: poll for return of " Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 09/18] powerpc/vas: Create cpu to vas id mapping Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 10/18] powerpc/vas, nx-842: Define and use chip_to_vas_id() Sukadev Bhattiprolu
2017-11-20 17:57   ` Josh Boyer
2017-11-22 11:56     ` Michael Ellerman
2017-11-08  2:23 ` [PATCH v3 11/18] powerpc/vas: Export HVWC to debugfs Sukadev Bhattiprolu
2017-11-08  2:23 ` Sukadev Bhattiprolu [this message]
2017-11-08  2:23 ` [PATCH v3 13/18] powerpc: Add support for setting SPRN_TIDR Sukadev Bhattiprolu
2017-11-09 11:53   ` Michael Ellerman
2017-11-08  2:23 ` [PATCH v3 14/18] powerpc: Define set_thread_uses_vas() Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 15/18] powerpc: Emulate paste instruction Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 16/18] powerpc/vas: Define vas_win_paste_addr() Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 17/18] powerpc/vas: Define vas_win_id() Sukadev Bhattiprolu
2017-11-08  2:23 ` [PATCH v3 18/18] powerpc/vas: Add support for user receive window Sukadev Bhattiprolu

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