From: Alexandru Elisei <alexandru.elisei@arm.com>
To: kvm@vger.kernel.org, will@kernel.org, julien.thierry.kdev@gmail.com
Cc: maz@kernel.org, suzuki.poulose@arm.com, julien.grall@arm.com,
andre.przywara@arm.com
Subject: [PATCH kvmtool 10/16] kvmtool: Allow standard size specifiers for memory
Date: Mon, 23 Sep 2019 14:35:16 +0100 [thread overview]
Message-ID: <1569245722-23375-11-git-send-email-alexandru.elisei@arm.com> (raw)
In-Reply-To: <1569245722-23375-1-git-send-email-alexandru.elisei@arm.com>
From: Suzuki K Poulose <suzuki.poulose@arm.com>
Allow standard suffixes, K, M, G, T & P suffixes (lowercase and uppercase)
for sizes and addresses for memory bank parameters. By default, the size is
specified in MB.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
---
builtin-run.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++------
1 file changed, 49 insertions(+), 6 deletions(-)
diff --git a/builtin-run.c b/builtin-run.c
index df255cc44078..757ede4ac0d1 100644
--- a/builtin-run.c
+++ b/builtin-run.c
@@ -49,9 +49,11 @@
#include <ctype.h>
#include <stdio.h>
-#define MB_SHIFT (20)
#define KB_SHIFT (10)
+#define MB_SHIFT (20)
#define GB_SHIFT (30)
+#define TB_SHIFT (40)
+#define PB_SHIFT (50)
__thread struct kvm_cpu *current_kvm_cpu;
@@ -87,6 +89,48 @@ void kvm_run_set_wrapper_sandbox(void)
kvm_run_wrapper = KVM_RUN_SANDBOX;
}
+static int parse_unit(char **next)
+{
+ int shift = 0;
+
+ switch(**next) {
+ case 'K': case 'k': shift = KB_SHIFT; break;
+ case 'M': case 'm': shift = MB_SHIFT; break;
+ case 'G': case 'g': shift = GB_SHIFT; break;
+ case 'T': case 't': shift = TB_SHIFT; break;
+ case 'P': case 'p': shift = PB_SHIFT; break;
+ }
+
+ if (shift)
+ (*next)++;
+
+ return shift;
+}
+
+static u64 parse_size(char **next)
+{
+ int shift = parse_unit(next);
+
+ /* By default the size is in MB, if none is specified. */
+ if (!shift)
+ shift = 20;
+
+ while (**next != '\0' && **next != '@')
+ (*next)++;
+
+ return ((u64)1) << shift;
+}
+
+static u64 parse_addr(char **next)
+{
+ int shift = parse_unit(next);
+
+ while (**next != '\0')
+ (*next)++;
+
+ return ((u64)1) << shift;
+}
+
static int mem_parser(const struct option *opt, const char *arg, int unset)
{
struct kvm_config *cfg = opt->value;
@@ -99,15 +143,12 @@ static int mem_parser(const struct option *opt, const char *arg, int unset)
if (next == p)
die("Invalid memory size");
- /* The user specifies the memory in MB, we use bytes. */
- size <<= MB_SHIFT;
+ size *= parse_size(&next);
if (*next == '\0')
goto out;
- else if (*next == '@')
- p = next + 1;
else
- die("Unexpected character after memory size: %c", *next);
+ p = next + 1;
addr = strtoll(p, &next, 0);
if (next == p)
@@ -118,6 +159,8 @@ static int mem_parser(const struct option *opt, const char *arg, int unset)
die("Specifying the memory address not supported by the architecture");
#endif
+ addr *= parse_addr(&next);
+
out:
cfg->ram_base = addr;
cfg->ram_size = size;
--
2.7.4
next prev parent reply other threads:[~2019-09-23 13:35 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 13:35 [PATCH kvmtool 00/16] arm: Allow the user to define the memory layout Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 01/16] arm: Allow use of hugepage with 16K pagesize host Alexandru Elisei
2019-11-06 16:47 ` Andre Przywara
2019-11-06 17:29 ` Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 02/16] kvm__arch_init: Don't pass hugetlbfs_path and ram_size in parameter Alexandru Elisei
2019-11-06 16:47 ` Andre Przywara
2019-11-07 10:03 ` Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 03/16] virtio/scsi: Allow the use of multiple banks Alexandru Elisei
2019-11-06 16:48 ` Andre Przywara
2020-02-05 18:07 ` Suzuki Kuruppassery Poulose
2019-09-23 13:35 ` [PATCH kvmtool 04/16] kvmtool: Add helper to sanitize arch specific KVM configuration Alexandru Elisei
2019-11-06 16:48 ` Andre Przywara
2019-11-07 10:05 ` Alexandru Elisei
2020-02-05 18:16 ` Suzuki Kuruppassery Poulose
2019-09-23 13:35 ` [PATCH kvmtool 05/16] kvmtool: Use MB consistently Alexandru Elisei
2019-11-06 16:49 ` Andre Przywara
2020-02-05 18:17 ` Suzuki Kuruppassery Poulose
2019-09-23 13:35 ` [PATCH kvmtool 06/16] builtin-run.c: Always use ram_size in bytes Alexandru Elisei
2019-11-06 16:49 ` Andre Przywara
2019-11-07 10:08 ` Alexandru Elisei
2020-02-05 19:03 ` Suzuki Kuruppassery Poulose
2019-09-23 13:35 ` [PATCH kvmtool 07/16] arm: Remove redundant define ARM_PCI_CFG_SIZE Alexandru Elisei
2019-11-06 16:49 ` Andre Przywara
2020-02-06 11:49 ` Suzuki Kuruppassery Poulose
2019-09-23 13:35 ` [PATCH kvmtool 08/16] arm: Move anything related to RAM initialization in kvm__init_ram Alexandru Elisei
2019-11-07 13:46 ` Andre Przywara
2019-09-23 13:35 ` [PATCH kvmtool 09/16] arm: Allow the user to specify RAM base address Alexandru Elisei
2019-11-07 13:54 ` Andre Przywara
2020-02-06 12:20 ` Suzuki Kuruppassery Poulose
2019-09-23 13:35 ` Alexandru Elisei [this message]
2019-11-07 13:55 ` [PATCH kvmtool 10/16] kvmtool: Allow standard size specifiers for memory Andre Przywara
2019-09-23 13:35 ` [PATCH kvmtool 11/16] arm/pci: Remove unused ioports Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 12/16] Fold kvm__init_ram call in kvm__arch_init and rename it Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 13/16] arm: Allow any base address for RAM Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 14/16] arm: Move memory related code to memory.c Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 15/16] kvmtool: Make the size@addr option parser globally visible Alexandru Elisei
2019-09-23 13:35 ` [PATCH kvmtool 16/16] arm: Allow the user to define the MMIO regions Alexandru Elisei
2020-02-05 17:16 ` [PATCH kvmtool 00/16] arm: Allow the user to define the memory layout Will Deacon
2020-02-05 17:18 ` Alexandru Elisei
2020-02-06 9:20 ` Marc Zyngier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1569245722-23375-11-git-send-email-alexandru.elisei@arm.com \
--to=alexandru.elisei@arm.com \
--cc=andre.przywara@arm.com \
--cc=julien.grall@arm.com \
--cc=julien.thierry.kdev@gmail.com \
--cc=kvm@vger.kernel.org \
--cc=maz@kernel.org \
--cc=suzuki.poulose@arm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).