kata-containers/tools/packaging/qemu/patches/6.2.x/Revert-target-ppc-Move-SPR_DSISR-setting-to-powerpc_excp.patch
Julio Montes 18d4d7fb1d tools: update QEMU to 6.2
bring Intel SGX support

Changes tha may impact in Kata Containers
Arm:
The 'virt' machine now supports an emulated ITS
The 'virt' machine now supports more than 123 CPUs in TCG emulation mode
The pl031 real-time clock device now supports sending RTC_CHANGE QMP events

PowerPC:
Improved POWER10 support for the 'powernv' machine
Initial support for POWER10 DD2.0 CPU added
Added support for FORM2 PAPR NUMA descriptions in the "pseries" machine
 type

s390x:
Improved storage key emulation (e.g. fixed address handling, lazy
 storage key enablement for TCG, ...)
New gen16 CPU features are now enabled automatically in the latest
 machine type

KVM:
Support for SGX in the virtual machine, using the /dev/sgx_vepc device
 on the host and the "memory-backend-epc" backend in QEMU.
New "hv-apicv" CPU property (aliased to "hv-avic") sets the
 HV_DEPRECATING_AEOI_RECOMMENDED bit in CPUID[0x40000004].EAX.

virtio-mem:
QEMU now fully supports guest memory dumps with virtio-mem.
QEMU now cleanly supports precopy migration, postcopy migration and
 background snapshots with virtio-mem.

fixes #3902

Signed-off-by: Julio Montes <julio.montes@intel.com>
2022-03-16 10:35:39 -06:00

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From 29c4a3363bf287bb9a7b0342b1bc2dba3661c96c Mon Sep 17 00:00:00 2001
From: Fabiano Rosas <farosas@linux.ibm.com>
Date: Fri, 17 Dec 2021 17:57:18 +0100
Subject: [PATCH] Revert "target/ppc: Move SPR_DSISR setting to powerpc_excp"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This reverts commit 336e91f85332dda0ede4c1d15b87a19a0fb898a2.
It breaks the --disable-tcg build:
../target/ppc/excp_helper.c:463:29: error: implicit declaration of
function cpu_ldl_code [-Werror=implicit-function-declaration]
We should not have TCG code in powerpc_excp because some kvm-only
routines use it indirectly to dispatch interrupts. See
kvm_handle_debug, spapr_mce_req_event and
spapr_do_system_reset_on_cpu.
We can re-introduce the change once we have split the interrupt
injection code between KVM and TCG.
Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20211209173323.2166642-1-farosas@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
target/ppc/excp_helper.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index feb3fd42e2..6ba0840e99 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -464,15 +464,13 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
break;
}
case POWERPC_EXCP_ALIGN: /* Alignment exception */
+ /* Get rS/rD and rA from faulting opcode */
/*
- * Get rS/rD and rA from faulting opcode.
- * Note: We will only invoke ALIGN for atomic operations,
- * so all instructions are X-form.
+ * Note: the opcode fields will not be set properly for a
+ * direct store load/store, but nobody cares as nobody
+ * actually uses direct store segments.
*/
- {
- uint32_t insn = cpu_ldl_code(env, env->nip);
- env->spr[SPR_DSISR] |= (insn & 0x03FF0000) >> 16;
- }
+ env->spr[SPR_DSISR] |= (env->error_code & 0x03FF0000) >> 16;
break;
case POWERPC_EXCP_PROGRAM: /* Program exception */
switch (env->error_code & ~0xF) {
@@ -1441,6 +1439,11 @@ void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
int mmu_idx, uintptr_t retaddr)
{
CPUPPCState *env = cs->env_ptr;
+ uint32_t insn;
+
+ /* Restore state and reload the insn we executed, for filling in DSISR. */
+ cpu_restore_state(cs, retaddr, true);
+ insn = cpu_ldl_code(env, env->nip);
switch (env->mmu_model) {
case POWERPC_MMU_SOFT_4xx:
@@ -1456,8 +1459,8 @@ void ppc_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
}
cs->exception_index = POWERPC_EXCP_ALIGN;
- env->error_code = 0;
- cpu_loop_exit_restore(cs, retaddr);
+ env->error_code = insn & 0x03FF0000;
+ cpu_loop_exit(cs);
}
#endif /* CONFIG_TCG */
#endif /* !CONFIG_USER_ONLY */
--
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