summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorPaolo Bonzini <pbonzini@redhat.com>2024-01-11 03:00:34 -0500
committerPaolo Bonzini <pbonzini@redhat.com>2024-02-08 08:41:06 -0500
commit8886640dade4ae2595fcdce511c8bcc716aa47d3 (patch)
treeffcf2f3b0e7c25fd1d9e8ddd3e37d462c9e4dc1c /arch
parent5d9cb71642db11a5149c9a7234a9a62d387de449 (diff)
kvm: replace __KVM_HAVE_READONLY_MEM with Kconfig symbol
KVM uses __KVM_HAVE_* symbols in the architecture-dependent uapi/asm/kvm.h to mask unused definitions in include/uapi/linux/kvm.h. __KVM_HAVE_READONLY_MEM however was nothing but a misguided attempt to define KVM_CAP_READONLY_MEM only on architectures where KVM_CHECK_EXTENSION(KVM_CAP_READONLY_MEM) could possibly return nonzero. This however does not make sense, and it prevented userspace from supporting this architecture-independent feature without recompilation. Therefore, these days __KVM_HAVE_READONLY_MEM does not mask anything and is only used in virt/kvm/kvm_main.c. Userspace does not need to test it and there should be no need for it to exist. Remove it and replace it with a Kconfig symbol within Linux source code. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/include/uapi/asm/kvm.h1
-rw-r--r--arch/arm64/kvm/Kconfig1
-rw-r--r--arch/loongarch/include/uapi/asm/kvm.h2
-rw-r--r--arch/loongarch/kvm/Kconfig1
-rw-r--r--arch/mips/include/uapi/asm/kvm.h2
-rw-r--r--arch/mips/kvm/Kconfig1
-rw-r--r--arch/riscv/include/uapi/asm/kvm.h1
-rw-r--r--arch/riscv/kvm/Kconfig1
-rw-r--r--arch/x86/include/uapi/asm/kvm.h1
-rw-r--r--arch/x86/kvm/Kconfig1
10 files changed, 5 insertions, 7 deletions
diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h
index 75809c8dc2f0..9c1040dad4eb 100644
--- a/arch/arm64/include/uapi/asm/kvm.h
+++ b/arch/arm64/include/uapi/asm/kvm.h
@@ -39,7 +39,6 @@
#define __KVM_HAVE_GUEST_DEBUG
#define __KVM_HAVE_IRQ_LINE
-#define __KVM_HAVE_READONLY_MEM
#define __KVM_HAVE_VCPU_EVENTS
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 6c3c8ca73e7f..114626b816f7 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -36,6 +36,7 @@ menuconfig KVM
select HAVE_KVM_IRQ_ROUTING
select IRQ_BYPASS_MANAGER
select HAVE_KVM_IRQ_BYPASS
+ select HAVE_KVM_READONLY_MEM
select HAVE_KVM_VCPU_RUN_PID_CHANGE
select SCHED_INFO
select GUEST_PERF_EVENTS if PERF_EVENTS
diff --git a/arch/loongarch/include/uapi/asm/kvm.h b/arch/loongarch/include/uapi/asm/kvm.h
index 923d0bd38294..109785922cf9 100644
--- a/arch/loongarch/include/uapi/asm/kvm.h
+++ b/arch/loongarch/include/uapi/asm/kvm.h
@@ -14,8 +14,6 @@
* Some parts derived from the x86 version of this file.
*/
-#define __KVM_HAVE_READONLY_MEM
-
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
#define KVM_DIRTY_LOG_PAGE_OFFSET 64
diff --git a/arch/loongarch/kvm/Kconfig b/arch/loongarch/kvm/Kconfig
index 61f7e33b1f95..0768b45422a3 100644
--- a/arch/loongarch/kvm/Kconfig
+++ b/arch/loongarch/kvm/Kconfig
@@ -28,6 +28,7 @@ config KVM
select KVM_GENERIC_HARDWARE_ENABLING
select KVM_GENERIC_MMU_NOTIFIER
select KVM_MMIO
+ select HAVE_KVM_READONLY_MEM
select KVM_XFER_TO_GUEST_WORK
help
Support hosting virtualized guest machines using
diff --git a/arch/mips/include/uapi/asm/kvm.h b/arch/mips/include/uapi/asm/kvm.h
index edcf717c4327..9673dc9cb315 100644
--- a/arch/mips/include/uapi/asm/kvm.h
+++ b/arch/mips/include/uapi/asm/kvm.h
@@ -20,8 +20,6 @@
* Some parts derived from the x86 version of this file.
*/
-#define __KVM_HAVE_READONLY_MEM
-
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
/*
diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig
index 18e7a17d5115..8474bf9c689e 100644
--- a/arch/mips/kvm/Kconfig
+++ b/arch/mips/kvm/Kconfig
@@ -26,6 +26,7 @@ config KVM
select KVM_MMIO
select KVM_GENERIC_MMU_NOTIFIER
select KVM_GENERIC_HARDWARE_ENABLING
+ select HAVE_KVM_READONLY_MEM
help
Support for hosting Guest kernels.
diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
index 7499e88a947c..fdf4ba066131 100644
--- a/arch/riscv/include/uapi/asm/kvm.h
+++ b/arch/riscv/include/uapi/asm/kvm.h
@@ -16,7 +16,6 @@
#include <asm/ptrace.h>
#define __KVM_HAVE_IRQ_LINE
-#define __KVM_HAVE_READONLY_MEM
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
diff --git a/arch/riscv/kvm/Kconfig b/arch/riscv/kvm/Kconfig
index d490db943858..26d1727f0550 100644
--- a/arch/riscv/kvm/Kconfig
+++ b/arch/riscv/kvm/Kconfig
@@ -24,6 +24,7 @@ config KVM
select HAVE_KVM_IRQ_ROUTING
select HAVE_KVM_MSI
select HAVE_KVM_VCPU_ASYNC_IOCTL
+ select HAVE_KVM_READONLY_MEM
select KVM_COMMON
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select KVM_GENERIC_HARDWARE_ENABLING
diff --git a/arch/x86/include/uapi/asm/kvm.h b/arch/x86/include/uapi/asm/kvm.h
index bf68e56fd484..c5e682ee7726 100644
--- a/arch/x86/include/uapi/asm/kvm.h
+++ b/arch/x86/include/uapi/asm/kvm.h
@@ -51,7 +51,6 @@
#define __KVM_HAVE_DEBUGREGS
#define __KVM_HAVE_XSAVE
#define __KVM_HAVE_XCRS
-#define __KVM_HAVE_READONLY_MEM
/* Architectural interrupt line count. */
#define KVM_NR_INTERRUPTS 256
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 87e3da7b0439..5895aee5dfef 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -32,6 +32,7 @@ config KVM
select IRQ_BYPASS_MANAGER
select HAVE_KVM_IRQ_BYPASS
select HAVE_KVM_IRQ_ROUTING
+ select HAVE_KVM_READONLY_MEM
select KVM_ASYNC_PF
select USER_RETURN_NOTIFIER
select KVM_MMIO