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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen staging] xen/sysctl: wrap around arch-specific arch_do_sysctl
commit e381320b0fc8b5131871fbc99f3cc31e5f51bf07
Author: Penny Zheng <Penny.Zheng@xxxxxxx>
AuthorDate: Fri Jul 11 12:31:56 2025 +0800
Commit: Stefano Stabellini <stefano.stabellini@xxxxxxx>
CommitDate: Wed Jul 16 17:36:37 2025 -0700
xen/sysctl: wrap around arch-specific arch_do_sysctl
Function arch_do_sysctl is to perform arch-specific sysctl op.
Some functions, like psr_get_info() for x86, DTB overlay support for arm,
are solely available through sysctl op, then they all shall be wrapped
with CONFIG_SYSCTL
Also, remove all #ifdef CONFIG_SYSCTL-s in arch-specific sysctl.c, as
we put the guardian in Makefile for the whole file.
Since PV_SHIM_EXCLUSIVE needs sorting in the future, we move
obj-$(CONFIG_SYSCTL) += sysctl.o out of PV_SHIM_EXCLUSIVE condition.
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
Signed-off-by: Sergiy Kibrik <Sergiy_Kibrik@xxxxxxxx>
Signed-off-by: Penny Zheng <Penny.Zheng@xxxxxxx>
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
xen/arch/arm/Kconfig | 1 +
xen/arch/arm/Makefile | 2 +-
xen/arch/arm/sysctl.c | 2 --
xen/arch/riscv/stubs.c | 2 +-
xen/arch/x86/Makefile | 2 +-
xen/arch/x86/psr.c | 18 ++++++++++++++++++
xen/arch/x86/sysctl.c | 2 --
7 files changed, 22 insertions(+), 7 deletions(-)
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 95a2cd3d00..bf6d1cf88e 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -141,6 +141,7 @@ config HAS_ITS
config OVERLAY_DTB
bool "DTB overlay support (UNSUPPORTED)" if UNSUPPORTED
+ depends on SYSCTL
help
Dynamic addition/removal of Xen device tree nodes using a dtbo.
diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile
index ab0a0c2be6..f833cdf207 100644
--- a/xen/arch/arm/Makefile
+++ b/xen/arch/arm/Makefile
@@ -51,7 +51,7 @@ obj-y += setup.o
obj-y += shutdown.o
obj-y += smp.o
obj-y += smpboot.o
-obj-y += sysctl.o
+obj-$(CONFIG_SYSCTL) += sysctl.o
obj-y += time.o
obj-y += traps.o
obj-y += vcpreg.o
diff --git a/xen/arch/arm/sysctl.c b/xen/arch/arm/sysctl.c
index 2d350b700a..32cab4feff 100644
--- a/xen/arch/arm/sysctl.c
+++ b/xen/arch/arm/sysctl.c
@@ -15,7 +15,6 @@
#include <asm/arm64/sve.h>
#include <public/sysctl.h>
-#ifdef CONFIG_SYSCTL
void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
{
pi->capabilities |= XEN_SYSCTL_PHYSCAP_hvm | XEN_SYSCTL_PHYSCAP_hap;
@@ -23,7 +22,6 @@ void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
pi->arch_capabilities |= MASK_INSR(sve_encode_vl(get_sys_vl_len()),
XEN_SYSCTL_PHYSCAP_ARM_SVE_MASK);
}
-#endif
long arch_do_sysctl(struct xen_sysctl *sysctl,
XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)
diff --git a/xen/arch/riscv/stubs.c b/xen/arch/riscv/stubs.c
index f86a1c17cb..8918cebf35 100644
--- a/xen/arch/riscv/stubs.c
+++ b/xen/arch/riscv/stubs.c
@@ -302,6 +302,7 @@ unsigned long raw_copy_from_guest(void *to, const void
__user *from,
BUG_ON("unimplemented");
}
+#ifdef CONFIG_SYSCTL
/* sysctl.c */
long arch_do_sysctl(struct xen_sysctl *sysctl,
@@ -310,7 +311,6 @@ long arch_do_sysctl(struct xen_sysctl *sysctl,
BUG_ON("unimplemented");
}
-#ifdef CONFIG_SYSCTL
void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
{
BUG_ON("unimplemented");
diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile
index ce724a9daa..96d63219e7 100644
--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -63,6 +63,7 @@ obj-y += smpboot.o
obj-y += spec_ctrl.o
obj-y += srat.o
obj-y += string.o
+obj-$(CONFIG_SYSCTL) += sysctl.o
obj-y += time.o
obj-y += traps-setup.o
obj-y += traps.o
@@ -78,7 +79,6 @@ ifneq ($(CONFIG_PV_SHIM_EXCLUSIVE),y)
obj-y += domctl.o
obj-y += platform_hypercall.o
obj-$(CONFIG_COMPAT) += x86_64/platform_hypercall.o
-obj-y += sysctl.o
endif
extra-y += asm-macros.i
diff --git a/xen/arch/x86/psr.c b/xen/arch/x86/psr.c
index 5815a35335..499d320e61 100644
--- a/xen/arch/x86/psr.c
+++ b/xen/arch/x86/psr.c
@@ -133,9 +133,11 @@ static const struct feat_props {
*/
enum psr_type alt_type;
+#ifdef CONFIG_SYSCTL
/* get_feat_info is used to return feature HW info through sysctl. */
bool (*get_feat_info)(const struct feat_node *feat,
uint32_t data[], unsigned int array_len);
+#endif
/* write_msr is used to write out feature MSR register. */
void (*write_msr)(unsigned int cos, uint32_t val, enum psr_type type);
@@ -418,6 +420,7 @@ static bool mba_init_feature(const struct cpuid_leaf *regs,
return true;
}
+#ifdef CONFIG_SYSCTL
static bool cf_check cat_get_feat_info(
const struct feat_node *feat, uint32_t data[], unsigned int array_len)
{
@@ -430,6 +433,7 @@ static bool cf_check cat_get_feat_info(
return true;
}
+#endif /* CONFIG_SYSCTL */
/* L3 CAT props */
static void cf_check l3_cat_write_msr(
@@ -442,11 +446,14 @@ static const struct feat_props l3_cat_props = {
.cos_num = 1,
.type[0] = PSR_TYPE_L3_CBM,
.alt_type = PSR_TYPE_UNKNOWN,
+#ifdef CONFIG_SYSCTL
.get_feat_info = cat_get_feat_info,
+#endif
.write_msr = l3_cat_write_msr,
.sanitize = cat_check_cbm,
};
+#ifdef CONFIG_SYSCTL
/* L3 CDP props */
static bool cf_check l3_cdp_get_feat_info(
const struct feat_node *feat, uint32_t data[], uint32_t array_len)
@@ -458,6 +465,7 @@ static bool cf_check l3_cdp_get_feat_info(
return true;
}
+#endif /* CONFIG_SYSCTL */
static void cf_check l3_cdp_write_msr(
unsigned int cos, uint32_t val, enum psr_type type)
@@ -473,7 +481,9 @@ static const struct feat_props l3_cdp_props = {
.type[0] = PSR_TYPE_L3_DATA,
.type[1] = PSR_TYPE_L3_CODE,
.alt_type = PSR_TYPE_L3_CBM,
+#ifdef CONFIG_SYSCTL
.get_feat_info = l3_cdp_get_feat_info,
+#endif
.write_msr = l3_cdp_write_msr,
.sanitize = cat_check_cbm,
};
@@ -489,11 +499,14 @@ static const struct feat_props l2_cat_props = {
.cos_num = 1,
.type[0] = PSR_TYPE_L2_CBM,
.alt_type = PSR_TYPE_UNKNOWN,
+#ifdef CONFIG_SYSCTL
.get_feat_info = cat_get_feat_info,
+#endif
.write_msr = l2_cat_write_msr,
.sanitize = cat_check_cbm,
};
+#ifdef CONFIG_SYSCTL
/* MBA props */
static bool cf_check mba_get_feat_info(
const struct feat_node *feat, uint32_t data[], unsigned int array_len)
@@ -508,6 +521,7 @@ static bool cf_check mba_get_feat_info(
return true;
}
+#endif /* CONFIG_SYSCTL */
static void cf_check mba_write_msr(
unsigned int cos, uint32_t val, enum psr_type type)
@@ -545,7 +559,9 @@ static const struct feat_props mba_props = {
.cos_num = 1,
.type[0] = PSR_TYPE_MBA_THRTL,
.alt_type = PSR_TYPE_UNKNOWN,
+#ifdef CONFIG_SYSCTL
.get_feat_info = mba_get_feat_info,
+#endif
.write_msr = mba_write_msr,
.sanitize = mba_sanitize_thrtl,
};
@@ -808,6 +824,7 @@ static struct psr_socket_info *get_socket_info(unsigned int
socket)
return socket_info + socket;
}
+#ifdef CONFIG_SYSCTL
int psr_get_info(unsigned int socket, enum psr_type type,
uint32_t data[], unsigned int array_len)
{
@@ -839,6 +856,7 @@ int psr_get_info(unsigned int socket, enum psr_type type,
return -EINVAL;
}
+#endif /* CONFIG_SYSCTL */
int psr_get_val(struct domain *d, unsigned int socket,
uint32_t *val, enum psr_type type)
diff --git a/xen/arch/x86/sysctl.c b/xen/arch/x86/sysctl.c
index f64addbe2b..1b04947516 100644
--- a/xen/arch/x86/sysctl.c
+++ b/xen/arch/x86/sysctl.c
@@ -91,7 +91,6 @@ static long cf_check smt_up_down_helper(void *data)
return ret;
}
-#ifdef CONFIG_SYSCTL
void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
{
memcpy(pi->hw_cap, boot_cpu_data.x86_capability,
@@ -105,7 +104,6 @@ void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
if ( IS_ENABLED(CONFIG_SHADOW_PAGING) )
pi->capabilities |= XEN_SYSCTL_PHYSCAP_shadow;
}
-#endif /* CONFIG_SYSCTL */
long arch_do_sysctl(
struct xen_sysctl *sysctl, XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)
--
generated by git-patchbot for /home/xen/git/xen.git#staging
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