* Re: [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings
@ 2018-05-16 10:21 Lucian Petrut
2018-05-16 10:41 ` Paolo Bonzini
0 siblings, 1 reply; 5+ messages in thread
From: Lucian Petrut @ 2018-05-16 10:21 UTC (permalink / raw)
To: Paolo Bonzini, petrutlucian94
Cc: Alessandro Pilotti, Justin Terry, Richard Henderson,
Eduardo Habkost, open list:All patches CC here
Hi,
Thanks for reviewing those changes.
“can you send a patch with the bugfix only”
By “the bugfix only” you mean the previous commit, the one that dynamically loads the DLLs?
FWIW, without this patch, i386 targets won’t compile, so I’d consider that an improvement. Probably I should’ve explicitly mentioned this in the commit message.
Regards,
Lucian Petrut
From: Paolo Bonzini<mailto:pbonzini@redhat.com>
Sent: Wednesday, May 16, 2018 1:13 PM
To: petrutlucian94@gmail.com<mailto:petrutlucian94@gmail.com>
Cc: Lucian Petrut<mailto:lpetrut@cloudbasesolutions.com>; Alessandro Pilotti<mailto:apilotti@cloudbasesolutions.com>; Justin Terry<mailto:juterry@microsoft.com>; Richard Henderson<mailto:rth@twiddle.net>; Eduardo Habkost<mailto:ehabkost@redhat.com>; open list:All patches CC here<mailto:qemu-devel@nongnu.org>
Subject: Re: [PATCH v2 3/3] WHPX: fix some compiler warnings
On 15/05/2018 19:35, petrutlucian94@gmail.com wrote:
> From: Lucian Petrut <lpetrut@cloudbasesolutions.com>
>
> This patch fixes a few compiler warnings, especially in case of
> x86 targets, where the number of registers was not properly handled
> and could cause an overflow.
>
> Signed-off-by: Alessandro Pilotti <apilotti@cloudbasesolutions.com>
> Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
> Signed-off-by: Lucian Petrut <lpetrut@cloudbasesolutions.com>
> ---
> target/i386/whpx-all.c | 49 +++++++++++++++++++++++++++++++++++--------------
> 1 file changed, 35 insertions(+), 14 deletions(-)
>
> diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c
> index 0a29d56..2fd3397 100644
> --- a/target/i386/whpx-all.c
> +++ b/target/i386/whpx-all.c
> @@ -226,24 +226,31 @@ static void whpx_set_registers(CPUState *cpu)
> struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
> struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr);
> X86CPU *x86_cpu = X86_CPU(cpu);
> - struct whpx_register_set vcxt = {0};
> + struct whpx_register_set vcxt;
> HRESULT hr;
> - int idx = 0;
> + int idx;
> + int idx_next;
> int i;
> int v86, r86;
>
> assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
>
> + memset(&vcxt, 0, sizeof(struct whpx_register_set));
This change does not seem like an improvement, can you send a patch with
the bugfix only?
Thanks,
Paolo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings
2018-05-16 10:21 [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings Lucian Petrut
@ 2018-05-16 10:41 ` Paolo Bonzini
2018-05-16 10:44 ` Lucian Petrut
0 siblings, 1 reply; 5+ messages in thread
From: Paolo Bonzini @ 2018-05-16 10:41 UTC (permalink / raw)
To: Lucian Petrut, petrutlucian94
Cc: Alessandro Pilotti, Justin Terry, Richard Henderson,
Eduardo Habkost, open list:All patches CC here
On 16/05/2018 12:21, Lucian Petrut wrote:
> Hi,
>
> Thanks for reviewing those changes.
>
> /“can you send a patch with the bugfix only”/
>
> By “the bugfix only” you mean the previous commit, the one that
> dynamically loads the DLLs?
>
> FWIW, without this patch, i386 targets won’t compile, so I’d consider
> that an improvement. Probably I should’ve explicitly mentioned this in
> the commit message.
I mean this patch, but without the switch from {0} initializers to memset.
I've already queued patch 2 independently, so you are set with that one!
Thanks,
Paolo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings
2018-05-16 10:41 ` Paolo Bonzini
@ 2018-05-16 10:44 ` Lucian Petrut
0 siblings, 0 replies; 5+ messages in thread
From: Lucian Petrut @ 2018-05-16 10:44 UTC (permalink / raw)
To: Paolo Bonzini, petrutlucian94
Cc: Alessandro Pilotti, Justin Terry, Richard Henderson,
Eduardo Habkost, open list:All patches CC here
Oh, right, got it. Sorry for the confusion, I’ll take that out of the patch.
Thanks,
Lucian Petrut
From: Paolo Bonzini<mailto:pbonzini@redhat.com>
Sent: Wednesday, May 16, 2018 1:42 PM
To: Lucian Petrut<mailto:lpetrut@cloudbasesolutions.com>; petrutlucian94@gmail.com<mailto:petrutlucian94@gmail.com>
Cc: Alessandro Pilotti<mailto:apilotti@cloudbasesolutions.com>; Justin Terry<mailto:juterry@microsoft.com>; Richard Henderson<mailto:rth@twiddle.net>; Eduardo Habkost<mailto:ehabkost@redhat.com>; open list:All patches CC here<mailto:qemu-devel@nongnu.org>
Subject: Re: [PATCH v2 3/3] WHPX: fix some compiler warnings
On 16/05/2018 12:21, Lucian Petrut wrote:
> Hi,
>
> Thanks for reviewing those changes.
>
> /“can you send a patch with the bugfix only”/
>
> By “the bugfix only” you mean the previous commit, the one that
> dynamically loads the DLLs?
>
> FWIW, without this patch, i386 targets won’t compile, so I’d consider
> that an improvement. Probably I should’ve explicitly mentioned this in
> the commit message.
I mean this patch, but without the switch from {0} initializers to memset.
I've already queued patch 2 independently, so you are set with that one!
Thanks,
Paolo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings
2018-05-15 17:35 ` [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings petrutlucian94
@ 2018-05-16 10:13 ` Paolo Bonzini
0 siblings, 0 replies; 5+ messages in thread
From: Paolo Bonzini @ 2018-05-16 10:13 UTC (permalink / raw)
To: petrutlucian94
Cc: Lucian Petrut, Alessandro Pilotti, Justin Terry,
Richard Henderson, Eduardo Habkost,
open list:All patches CC here
On 15/05/2018 19:35, petrutlucian94@gmail.com wrote:
> From: Lucian Petrut <lpetrut@cloudbasesolutions.com>
>
> This patch fixes a few compiler warnings, especially in case of
> x86 targets, where the number of registers was not properly handled
> and could cause an overflow.
>
> Signed-off-by: Alessandro Pilotti <apilotti@cloudbasesolutions.com>
> Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
> Signed-off-by: Lucian Petrut <lpetrut@cloudbasesolutions.com>
> ---
> target/i386/whpx-all.c | 49 +++++++++++++++++++++++++++++++++++--------------
> 1 file changed, 35 insertions(+), 14 deletions(-)
>
> diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c
> index 0a29d56..2fd3397 100644
> --- a/target/i386/whpx-all.c
> +++ b/target/i386/whpx-all.c
> @@ -226,24 +226,31 @@ static void whpx_set_registers(CPUState *cpu)
> struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
> struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr);
> X86CPU *x86_cpu = X86_CPU(cpu);
> - struct whpx_register_set vcxt = {0};
> + struct whpx_register_set vcxt;
> HRESULT hr;
> - int idx = 0;
> + int idx;
> + int idx_next;
> int i;
> int v86, r86;
>
> assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
>
> + memset(&vcxt, 0, sizeof(struct whpx_register_set));
This change does not seem like an improvement, can you send a patch with
the bugfix only?
Thanks,
Paolo
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings
2018-05-15 17:35 [Qemu-devel] [PATCH v2 1/3] WHPX Add signature CPUID petrutlucian94
@ 2018-05-15 17:35 ` petrutlucian94
2018-05-16 10:13 ` Paolo Bonzini
0 siblings, 1 reply; 5+ messages in thread
From: petrutlucian94 @ 2018-05-15 17:35 UTC (permalink / raw)
Cc: Lucian Petrut, Alessandro Pilotti, Justin Terry, Paolo Bonzini,
Richard Henderson, Eduardo Habkost,
open list:All patches CC here
From: Lucian Petrut <lpetrut@cloudbasesolutions.com>
This patch fixes a few compiler warnings, especially in case of
x86 targets, where the number of registers was not properly handled
and could cause an overflow.
Signed-off-by: Alessandro Pilotti <apilotti@cloudbasesolutions.com>
Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
Signed-off-by: Lucian Petrut <lpetrut@cloudbasesolutions.com>
---
target/i386/whpx-all.c | 49 +++++++++++++++++++++++++++++++++++--------------
1 file changed, 35 insertions(+), 14 deletions(-)
diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c
index 0a29d56..2fd3397 100644
--- a/target/i386/whpx-all.c
+++ b/target/i386/whpx-all.c
@@ -226,24 +226,31 @@ static void whpx_set_registers(CPUState *cpu)
struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr);
X86CPU *x86_cpu = X86_CPU(cpu);
- struct whpx_register_set vcxt = {0};
+ struct whpx_register_set vcxt;
HRESULT hr;
- int idx = 0;
+ int idx;
+ int idx_next;
int i;
int v86, r86;
assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
+ memset(&vcxt, 0, sizeof(struct whpx_register_set));
+
v86 = (env->eflags & VM_MASK);
r86 = !(env->cr[0] & CR0_PE_MASK);
vcpu->tpr = cpu_get_apic_tpr(x86_cpu->apic_state);
vcpu->apic_base = cpu_get_apic_base(x86_cpu->apic_state);
+ idx = 0;
+
/* Indexes for first 16 registers match between HV and QEMU definitions */
- for (idx = 0; idx < CPU_NB_REGS64; idx += 1) {
- vcxt.values[idx].Reg64 = env->regs[idx];
+ idx_next = 16;
+ for (idx = 0; idx < CPU_NB_REGS; idx += 1) {
+ vcxt.values[idx].Reg64 = (uint64_t)env->regs[idx];
}
+ idx = idx_next;
/* Same goes for RIP and RFLAGS */
assert(whpx_register_names[idx] == WHvX64RegisterRip);
@@ -290,10 +297,12 @@ static void whpx_set_registers(CPUState *cpu)
/* 16 XMM registers */
assert(whpx_register_names[idx] == WHvX64RegisterXmm0);
- for (i = 0; i < 16; i += 1, idx += 1) {
+ idx_next = idx + 16;
+ for (i = 0; i < sizeof(env->xmm_regs) / sizeof(ZMMReg); i += 1, idx += 1) {
vcxt.values[idx].Reg128.Low64 = env->xmm_regs[i].ZMM_Q(0);
vcxt.values[idx].Reg128.High64 = env->xmm_regs[i].ZMM_Q(1);
}
+ idx = idx_next;
/* 8 FP registers */
assert(whpx_register_names[idx] == WHvX64RegisterFpMmx0);
@@ -384,7 +393,8 @@ static void whpx_get_registers(CPUState *cpu)
struct whpx_register_set vcxt;
uint64_t tpr, apic_base;
HRESULT hr;
- int idx = 0;
+ int idx;
+ int idx_next;
int i;
assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
@@ -399,10 +409,14 @@ static void whpx_get_registers(CPUState *cpu)
hr);
}
+ idx = 0;
+
/* Indexes for first 16 registers match between HV and QEMU definitions */
- for (idx = 0; idx < CPU_NB_REGS64; idx += 1) {
+ idx_next = 16;
+ for (idx = 0; idx < CPU_NB_REGS; idx += 1) {
env->regs[idx] = vcxt.values[idx].Reg64;
}
+ idx = idx_next;
/* Same goes for RIP and RFLAGS */
assert(whpx_register_names[idx] == WHvX64RegisterRip);
@@ -449,10 +463,12 @@ static void whpx_get_registers(CPUState *cpu)
/* 16 XMM registers */
assert(whpx_register_names[idx] == WHvX64RegisterXmm0);
- for (i = 0; i < 16; i += 1, idx += 1) {
+ idx_next = idx + 16;
+ for (i = 0; i < sizeof(env->xmm_regs) / sizeof(ZMMReg); i += 1, idx += 1) {
env->xmm_regs[i].ZMM_Q(0) = vcxt.values[idx].Reg128.Low64;
env->xmm_regs[i].ZMM_Q(1) = vcxt.values[idx].Reg128.High64;
}
+ idx = idx_next;
/* 8 FP registers */
assert(whpx_register_names[idx] == WHvX64RegisterFpMmx0);
@@ -701,11 +717,14 @@ static void whpx_vcpu_pre_run(CPUState *cpu)
X86CPU *x86_cpu = X86_CPU(cpu);
int irq;
uint8_t tpr;
- WHV_X64_PENDING_INTERRUPTION_REGISTER new_int = {0};
+ WHV_X64_PENDING_INTERRUPTION_REGISTER new_int;
UINT32 reg_count = 0;
- WHV_REGISTER_VALUE reg_values[3] = {0};
+ WHV_REGISTER_VALUE reg_values[3];
WHV_REGISTER_NAME reg_names[3];
+ memset(&new_int, 0, sizeof(new_int));
+ memset(reg_values, 0, sizeof(reg_values));
+
qemu_mutex_lock_iothread();
/* Inject NMI */
@@ -928,11 +947,13 @@ static int whpx_vcpu_run(CPUState *cpu)
break;
case WHvRunVpExitReasonX64Cpuid: {
- WHV_REGISTER_VALUE reg_values[5] = {0};
+ WHV_REGISTER_VALUE reg_values[5];
WHV_REGISTER_NAME reg_names[5];
UINT32 reg_count = 5;
UINT64 rip, rax, rcx, rdx, rbx;
+ memset(reg_values, 0, sizeof(reg_values));
+
rip = vcpu->exit_ctx.VpContext.Rip +
vcpu->exit_ctx.VpContext.InstructionLength;
switch (vcpu->exit_ctx.CpuidAccess.Rax) {
@@ -1203,7 +1224,7 @@ static void whpx_update_mapping(hwaddr start_pa, ram_addr_t size,
error_report("WHPX: Failed to %s GPA range '%s' PA:%p, Size:%p bytes,"
" Host:%p, hr=%08lx",
(add ? "MAP" : "UNMAP"), name,
- (void *)start_pa, (void *)size, host_va, hr);
+ (void *)(uintptr_t)start_pa, (void *)size, host_va, hr);
}
}
@@ -1234,8 +1255,8 @@ static void whpx_process_section(MemoryRegionSection *section, int add)
host_va = (uintptr_t)memory_region_get_ram_ptr(mr)
+ section->offset_within_region + delta;
- whpx_update_mapping(start_pa, size, (void *)host_va, add,
- memory_region_is_rom(mr), mr->name);
+ whpx_update_mapping(start_pa, size, (void *)(uintptr_t)host_va, add,
+ memory_region_is_rom(mr), mr->name);
}
static void whpx_region_add(MemoryListener *listener,
--
2.7.4
^ permalink raw reply related [flat|nested] 5+ messages in thread
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2018-05-16 10:21 [Qemu-devel] [PATCH v2 3/3] WHPX: fix some compiler warnings Lucian Petrut
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2018-05-15 17:35 [Qemu-devel] [PATCH v2 1/3] WHPX Add signature CPUID petrutlucian94
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2018-05-16 10:13 ` Paolo Bonzini
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