88586bd480
- kvm-s390x-css-Introduce-an-ESW-struct.patch [bz#1957194] - kvm-s390x-css-Split-out-the-IRB-sense-data.patch [bz#1957194] - kvm-s390x-css-Refactor-IRB-construction.patch [bz#1957194] - kvm-s390x-css-Add-passthrough-IRB.patch [bz#1957194] - kvm-vhost-user-blk-Fail-gracefully-on-too-large-queue-si.patch [bz#1957194] - kvm-vhost-user-blk-Make-sure-to-set-Error-on-realize-fai.patch [bz#1957194] - kvm-vhost-user-blk-Don-t-reconnect-during-initialisation.patch [bz#1957194] - kvm-vhost-user-blk-Improve-error-reporting-in-realize.patch [bz#1957194] - kvm-vhost-user-blk-Get-more-feature-flags-from-vhost-dev.patch [bz#1957194] - kvm-virtio-Fail-if-iommu_platform-is-requested-but-unsup.patch [bz#1957194] - kvm-vhost-user-blk-Check-that-num-queues-is-supported-by.patch [bz#1957194] - kvm-vhost-user-Fix-backends-without-multiqueue-support.patch [bz#1957194] - kvm-file-posix-fix-max_iov-for-dev-sg-devices.patch [bz#1957194] - kvm-scsi-generic-pass-max_segments-via-max_iov-field-in-.patch [bz#1957194] - kvm-osdep-provide-ROUND_DOWN-macro.patch [bz#1957194] - kvm-block-backend-align-max_transfer-to-request-alignmen.patch [bz#1957194] - kvm-block-add-max_hw_transfer-to-BlockLimits.patch [bz#1957194] - kvm-file-posix-try-BLKSECTGET-on-block-devices-too-do-no.patch [bz#1957194] - kvm-block-Add-option-to-use-driver-whitelist-even-in-too.patch [bz#1957782] - kvm-spec-Restrict-block-drivers-in-tools.patch [bz#1957782] - kvm-Move-tools-to-separate-package.patch [bz#1972285] - kvm-Split-qemu-pr-helper-to-separate-package.patch [bz#1972300] - kvm-spec-RPM_BUILD_ROOT-buildroot.patch [bz#1973029] - kvm-spec-More-use-of-name-instead-of-qemu-kvm.patch [bz#1973029] - kvm-spec-Use-qemu-pr-helper.service-from-qemu.git.patch [bz#1973029] - kvm-spec-Use-_sourcedir-for-referencing-sources.patch [bz#1973029] - kvm-spec-Add-tools_only.patch [bz#1973029] - kvm-spec-build-Add-run_configure-helper.patch [bz#1973029] - kvm-spec-build-Disable-more-bits-with-disable_everything.patch [bz#1973029] - kvm-spec-build-Add-macros-for-some-configure-parameters.patch [bz#1973029] - kvm-spec-files-Move-qemu-guest-agent-and-qemu-img-earlie.patch [bz#1973029] - kvm-spec-install-Remove-redundant-bits.patch [bz#1973029] - kvm-spec-install-Add-modprobe_kvm_conf-macro.patch [bz#1973029] - kvm-spec-install-Remove-qemu-guest-agent-etc-qemu-kvm-us.patch [bz#1973029] - kvm-spec-install-clean-up-qemu-ga-section.patch [bz#1973029] - kvm-spec-install-Use-a-single-tools_only-section.patch [bz#1973029] - kvm-spec-Make-tools_only-not-cross-spec-sections.patch [bz#1973029] - kvm-spec-install-Limit-time-spent-in-qemu_kvm_build.patch [bz#1973029] - kvm-spec-misc-syntactic-merges-with-Fedora.patch [bz#1973029] - kvm-spec-Use-Fedora-s-pattern-for-specifying-rc-version.patch [bz#1973029] - kvm-spec-files-don-t-use-fine-grained-docs-file-list.patch [bz#1973029] - kvm-spec-files-Add-licenses-to-qemu-common-too.patch [bz#1973029] - kvm-spec-install-Drop-python3-shebang-fixup.patch [bz#1973029] - Resolves: bz#1957194 (Synchronize RHEL-AV 8.5.0 changes to RHEL 9.0.0 Beta) - Resolves: bz#1957782 (VMDK support should be read-only) - Resolves: bz#1972285 (Split out a qemu-kvm-tools subpackage) - Resolves: bz#1972300 (Split out a qemu-pr-helper subpackage) - Resolves: bz#1973029 (Spec file cleanups)
76 lines
2.6 KiB
Diff
76 lines
2.6 KiB
Diff
From d9fa07a04ee19ad713b053f6a649178361d822a8 Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Fri, 16 Jul 2021 16:51:31 -0400
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Subject: [PATCH 15/43] osdep: provide ROUND_DOWN macro
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RH-Author: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Bugzilla: 1957194
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osdep.h provides a ROUND_UP macro to hide bitwise operations for the
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purpose of rounding a number up to a power of two; add a ROUND_DOWN
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macro that does the same with truncation towards zero.
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While at it, change the formatting of some comments.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit c9797456f64ce72c03eb2969d97ac1dd4698d91e)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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include/qemu/osdep.h | 28 ++++++++++++++++++++++------
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1 file changed, 22 insertions(+), 6 deletions(-)
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diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
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index cb2a07e472..e327220992 100644
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--- a/include/qemu/osdep.h
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+++ b/include/qemu/osdep.h
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@@ -316,11 +316,16 @@ extern "C" {
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})
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#endif
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-/* Round number down to multiple */
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+/*
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+ * Round number down to multiple. Safe when m is not a power of 2 (see
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+ * ROUND_DOWN for a faster version when a power of 2 is guaranteed).
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+ */
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#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))
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-/* Round number up to multiple. Safe when m is not a power of 2 (see
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- * ROUND_UP for a faster version when a power of 2 is guaranteed) */
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+/*
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+ * Round number up to multiple. Safe when m is not a power of 2 (see
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+ * ROUND_UP for a faster version when a power of 2 is guaranteed).
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+ */
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#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
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/* Check if n is a multiple of m */
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@@ -337,11 +342,22 @@ extern "C" {
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/* Check if pointer p is n-bytes aligned */
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#define QEMU_PTR_IS_ALIGNED(p, n) QEMU_IS_ALIGNED((uintptr_t)(p), (n))
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-/* Round number up to multiple. Requires that d be a power of 2 (see
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+/*
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+ * Round number down to multiple. Requires that d be a power of 2 (see
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* QEMU_ALIGN_UP for a safer but slower version on arbitrary
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- * numbers); works even if d is a smaller type than n. */
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+ * numbers); works even if d is a smaller type than n.
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+ */
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+#ifndef ROUND_DOWN
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+#define ROUND_DOWN(n, d) ((n) & -(0 ? (n) : (d)))
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+#endif
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+
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+/*
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+ * Round number up to multiple. Requires that d be a power of 2 (see
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+ * QEMU_ALIGN_UP for a safer but slower version on arbitrary
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+ * numbers); works even if d is a smaller type than n.
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+ */
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#ifndef ROUND_UP
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-#define ROUND_UP(n, d) (((n) + (d) - 1) & -(0 ? (n) : (d)))
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+#define ROUND_UP(n, d) ROUND_DOWN((n) + (d) - 1, (d))
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#endif
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#ifndef DIV_ROUND_UP
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--
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2.27.0
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