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[PULL 07/38] ppc/spapr: Remove copy-paste from pa-features
From: |
Nicholas Piggin |
Subject: |
[PULL 07/38] ppc/spapr: Remove copy-paste from pa-features |
Date: |
Wed, 13 Mar 2024 02:58:18 +1000 |
TCG does not support copy/paste instructions. Remove it from
ibm,pa-features. This has never been implemented under TCG or
practically usable under KVM, so it won't be missed.
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
hw/ppc/spapr.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 3108d7c532..4192cd8d6c 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -237,6 +237,10 @@ static void spapr_dt_pa_features(SpaprMachineState *spapr,
* SSO (SAO) ordering is supported on KVM and thread=single hosts,
* but not MTTCG, so disable it. To advertise it, a cap would have
* to be added, or support implemented for MTTCG.
+ *
+ * Copy/paste is not supported by TCG, so it is not advertised. KVM
+ * can execute them but it has no accelerator drivers which are usable,
+ * so there isn't much need for it anyway.
*/
uint8_t pa_features_206[] = { 6, 0,
@@ -260,8 +264,8 @@ static void spapr_dt_pa_features(SpaprMachineState *spapr,
0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 24 - 29 */
/* 30: MMR, 32: LE atomic, 34: EBB + ext EBB */
0x80, 0x00, 0x80, 0x00, 0xC0, 0x00, /* 30 - 35 */
- /* 36: SPR SO, 38: Copy/Paste, 40: Radix MMU */
- 0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 36 - 41 */
+ /* 36: SPR SO, 40: Radix MMU */
+ 0x80, 0x00, 0x00, 0x00, 0x80, 0x00, /* 36 - 41 */
/* 42: PM, 44: PC RA, 46: SC vec'd */
0x80, 0x00, 0x80, 0x00, 0x80, 0x00, /* 42 - 47 */
/* 48: SIMD, 50: QP BFP, 52: String */
--
2.42.0
- [PULL 00/38] ppc-for-9.0-2 queue, Nicholas Piggin, 2024/03/12
- [PULL 01/38] target/ppc: Fix GDB SPR regnum indexing, Nicholas Piggin, 2024/03/12
- [PULL 03/38] spapr: set MSR[ME] and MSR[FP] on client entry, Nicholas Piggin, 2024/03/12
- [PULL 02/38] target/ppc: Prevent supervisor from modifying MSR[ME], Nicholas Piggin, 2024/03/12
- [PULL 04/38] ppc: Drop support for POWER9 and POWER10 DD1 chips, Nicholas Piggin, 2024/03/12
- [PULL 05/38] target/ppc: POWER10 does not have transactional memory, Nicholas Piggin, 2024/03/12
- [PULL 06/38] ppc/spapr|pnv: Remove SAO from pa-features, Nicholas Piggin, 2024/03/12
- [PULL 07/38] ppc/spapr: Remove copy-paste from pa-features,
Nicholas Piggin <=
- [PULL 08/38] ppc/spapr: Adjust ibm,pa-features for POWER9, Nicholas Piggin, 2024/03/12
- [PULL 10/38] ppc/pnv: Permit ibm,pa-features set per machine variant, Nicholas Piggin, 2024/03/12
- [PULL 11/38] ppc/pnv: Set POWER9, POWER10 ibm,pa-features bits, Nicholas Piggin, 2024/03/12
- [PULL 09/38] ppc/spapr: Add pa-features for POWER10 machines, Nicholas Piggin, 2024/03/12
- [PULL 13/38] docs: Deprecate the pseries-2.12 machines, Nicholas Piggin, 2024/03/12
- [PULL 14/38] docs/system/ppc: Document running Linux on AmigaNG machines, Nicholas Piggin, 2024/03/12
- [PULL 17/38] ppc/pnv: Improve pervasive topology calculation for big-core, Nicholas Piggin, 2024/03/12
- [PULL 12/38] MAINTAINERS: Remove myself as reviewer from PPC, Nicholas Piggin, 2024/03/12
- [PULL 15/38] target/ppc: Move add and subf type fixed-point arithmetic instructions to decodetree, Nicholas Piggin, 2024/03/12
- [PULL 21/38] target/ppc: Clean up ifdefs in excp_helper.c, part 1, Nicholas Piggin, 2024/03/12